djvu | d0202dee37da4da0375e0034e802e0351cf3185cc8cd6ad041ffca4c89d97797

Analysis

max time kernel
94s
max time network
129s
platform
windows10-2004_x64
resource
win10v2004-20220721-en
resource tags

arch:x64arch:x86image:win10v2004-20220721-enlocale:en-usos:windows10-2004-x64system
submitted
05-08-2022 09:21

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

24b6effdd763befb6ff4a657e15c77bc.exe
Size

857KB
MD5

24b6effdd763befb6ff4a657e15c77bc
SHA1

dd09691ceccd54d7e68a9c6553a6b94452dc7c85
SHA256

d0202dee37da4da0375e0034e802e0351cf3185cc8cd6ad041ffca4c89d97797
SHA512

0e72593a34574b463b9db613c2c14ce73c10063c382fac8e2a8f9dfc10b38784fd3f2b83d92ef72f1720988d158da5872d79ac50ece53ac08e98b89dfc8b7112

Score

10^/10

djvu discovery persistence ransomware spyware stealer

Malware Config

Extracted

Family

djvu

http://acacaca.org/test2/get.php

Attributes

extension
.vvyu
offline_id
rE5LpDv2ftYRXAo7bC18EpzfRMTHSGjgfyIMfZt1
payload_url
http://rgyui.top/dl/build2.exe
http://acacaca.org/files/1/build3.exe
ransomnote
ATTENTION! Don't worry, you can return all your files! All your files like pictures, databases, documents and other important are encrypted with strongest encryption and unique key. The only method of recovering files is to purchase decrypt tool and unique key for you. This software will decrypt all your encrypted files. What guarantees you have? You can send one of your encrypted file from your PC and we decrypt it for free. But we can decrypt only 1 file for free. File must not contain valuable information. You can get and look video overview decrypt tool: https://we.tl/t-QsoSRIeAK6 Price of private key and decrypt software is $980. Discount 50% available if you contact us first 72 hours, that's price for you is $490. Please note that you'll never restore your data without payment. Check your e-mail "Spam" or "Junk" folder if you don't get answer more than 6 hours. To get this software you need write on our e-mail: support@bestyourmail.ch Reserve e-mail address to contact us: datarestorehelp@airmail.cc Your personal ID: 0531Jhyjd

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 10 IoCs

Processes:

resource	yara_rule
behavioral2/memory/4652-131-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4652-132-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4232-134-0x0000000002230000-0x000000000234B000-memory.dmp	family_djvu
behavioral2/memory/4652-135-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4652-136-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4652-140-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/5004-143-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/5004-144-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/5004-150-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/5004-181-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu

Djvu Ransomware
Ransomware which is a variant of the STOP family.
ransomware djvu
Downloads MZ/PE file
Executes dropped EXE 2 IoCs

Processes:

build2.exebuild2.exe

pid process

3696 build2.exe
4772 build2.exe

pid	process
3696	build2.exe
4772	build2.exe

Checks computer location settings 2 TTPs 2 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

Processes:

24b6effdd763befb6ff4a657e15c77bc.exe24b6effdd763befb6ff4a657e15c77bc.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2660308776-3705150086-26593515-1000\Control Panel\International\Geo\Nation	24b6effdd763befb6ff4a657e15c77bc.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2660308776-3705150086-26593515-1000\Control Panel\International\Geo\Nation	24b6effdd763befb6ff4a657e15c77bc.exe

Modifies file permissions 1 TTPs 1 IoCs
discovery

File Permissions Modification
T1222

Processes:

icacls.exe

pid process

3540 icacls.exe
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081
Accesses 2FA software files, possible credential harvesting 2 TTPs
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081
Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
spyware

Data from Local System
T1005

Credentials in Files
T1081

pid	process
3540	icacls.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

24b6effdd763befb6ff4a657e15c77bc.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2660308776-3705150086-26593515-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\02fec652-6d6e-46b4-b072-09c46e3bb396\\24b6effdd763befb6ff4a657e15c77bc.exe\" --AutoStart"	24b6effdd763befb6ff4a657e15c77bc.exe

Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012
Looks up external IP address via web service 3 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.

Processes:

flow ioc

26 api.2ip.ua
27 api.2ip.ua
37 api.2ip.ua

flow	ioc
26	api.2ip.ua
27	api.2ip.ua
37	api.2ip.ua

Suspicious use of SetThreadContext 3 IoCs

Processes:

24b6effdd763befb6ff4a657e15c77bc.exe24b6effdd763befb6ff4a657e15c77bc.exebuild2.exe

description	pid	process	target process
PID 4232 set thread context of 4652	4232	24b6effdd763befb6ff4a657e15c77bc.exe	24b6effdd763befb6ff4a657e15c77bc.exe
PID 4164 set thread context of 5004	4164	24b6effdd763befb6ff4a657e15c77bc.exe	24b6effdd763befb6ff4a657e15c77bc.exe
PID 3696 set thread context of 4772	3696	build2.exe	build2.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Checks processor information in registry 2 TTPs 2 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

Processes:

build2.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	build2.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	build2.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

Processes:

24b6effdd763befb6ff4a657e15c77bc.exe24b6effdd763befb6ff4a657e15c77bc.exebuild2.exe

pid	process
4652	24b6effdd763befb6ff4a657e15c77bc.exe
4652	24b6effdd763befb6ff4a657e15c77bc.exe
5004	24b6effdd763befb6ff4a657e15c77bc.exe
5004	24b6effdd763befb6ff4a657e15c77bc.exe
4772	build2.exe
4772	build2.exe

Suspicious use of WriteProcessMemory 37 IoCs

Processes:

24b6effdd763befb6ff4a657e15c77bc.exe24b6effdd763befb6ff4a657e15c77bc.exe24b6effdd763befb6ff4a657e15c77bc.exe24b6effdd763befb6ff4a657e15c77bc.exebuild2.exe

C:\Users\Admin\AppData\Local\Temp\24b6effdd763befb6ff4a657e15c77bc.exe
"C:\Users\Admin\AppData\Local\Temp\24b6effdd763befb6ff4a657e15c77bc.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4232

C:\Users\Admin\AppData\Local\Temp\24b6effdd763befb6ff4a657e15c77bc.exe
"C:\Users\Admin\AppData\Local\Temp\24b6effdd763befb6ff4a657e15c77bc.exe"
2⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:4652

C:\Windows\SysWOW64\icacls.exe
icacls "C:\Users\Admin\AppData\Local\02fec652-6d6e-46b4-b072-09c46e3bb396" /deny *S-1-1-0:(OI)(CI)(DE,DC)
3⤵
- Modifies file permissions
PID:3540

C:\Users\Admin\AppData\Local\Temp\24b6effdd763befb6ff4a657e15c77bc.exe
"C:\Users\Admin\AppData\Local\Temp\24b6effdd763befb6ff4a657e15c77bc.exe" --Admin IsNotAutoStart IsNotTask
3⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4164

C:\Users\Admin\AppData\Local\Temp\24b6effdd763befb6ff4a657e15c77bc.exe
"C:\Users\Admin\AppData\Local\Temp\24b6effdd763befb6ff4a657e15c77bc.exe" --Admin IsNotAutoStart IsNotTask
4⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:5004

C:\Users\Admin\AppData\Local\4d896050-aa3b-4479-b61d-646fee99d476\build2.exe
"C:\Users\Admin\AppData\Local\4d896050-aa3b-4479-b61d-646fee99d476\build2.exe"
5⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3696

C:\Users\Admin\AppData\Local\4d896050-aa3b-4479-b61d-646fee99d476\build2.exe
"C:\Users\Admin\AppData\Local\4d896050-aa3b-4479-b61d-646fee99d476\build2.exe"
6⤵
- Executes dropped EXE
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
PID:4772

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

File Permissions Modification

T1222

Modify Registry

T1112

Credential Access

Credentials in Files

T1081

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Exfiltration

Command and Control

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\07CEF2F654E3ED6050FFC9B6EB844250_3431D4C539FB2CFCB781821E9902850D
Filesize
2KB

MD5
eba45bc75daf7421d4767f04582068ca

SHA1
e2d2b46d3780a8b7cdde6e542430f0da28684ce8

SHA256
87f79123a6048371f5e4eccca848509ff8315dea4be740c8480fe945c02b4f38

SHA512
0c081c029224806b1f1f200da673a9554e5d40756736f9ca8bc073c25703092c6d1e72a2fd971b41bedeba26e6ca9fa85486df39f852505925a49d8b94e0e330

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\B2FAF7692FD9FFBD64EDE317E42334BA_D7393C8F62BDE4D4CB606228BC7A711E
Filesize
1KB

MD5
4f74b1c3f52834fb5d5d0946410f286a

SHA1
e8b1734733535d236f422c282271e97b784b5261

SHA256
56b6f9f565e620e3cc377ac2265180c96efff2844f11cbb229eef977327869f1

SHA512
b84101ebe8570b2f0ecbefafcf58b941100ac6efc9cbbfc711e57bedf6cb6fc62141bd2d66c34f4b316568948ff6448c96ddef2cfde625965a9ea5968beefb2c

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\07CEF2F654E3ED6050FFC9B6EB844250_3431D4C539FB2CFCB781821E9902850D
Filesize
488B

MD5
4c218f80aabe334212a51a86c1479b25

SHA1
e5a1e7f92fa8d63b6f5b42501654e60b32f43972

SHA256
b00983a75530e3a115ac8b607e5280339334c1d501c116c21b2fe2acc6674349

SHA512
fe04f612439bfcf66117fab3b1ad3399f786c6eb1e24c4f0e4fef5007259718cad0197a054b04272850ea1e969173efa1103bb43a973db5d476add83a41576cc

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\B2FAF7692FD9FFBD64EDE317E42334BA_D7393C8F62BDE4D4CB606228BC7A711E
Filesize
396B

MD5
91a6f0d64ced2997c9f9a7592dbba52f

SHA1
3d341ed8ec2206ee8338cc19935b2ba29fb54ec2

SHA256
fb7693677781ea8e53f9bd237071b70865be75a9899956eaa031a4a61c193f1f

SHA512
2a488f718f387def5a711e1adadf15b1009c084361ebaaec682c4a074d9170dd7249733531f33a983dd33403c605c3c029b5d098204474c451f4097ced34f033

Download Submit
C:\Users\Admin\AppData\Local\02fec652-6d6e-46b4-b072-09c46e3bb396\24b6effdd763befb6ff4a657e15c77bc.exe
Filesize
857KB

MD5
24b6effdd763befb6ff4a657e15c77bc

SHA1
dd09691ceccd54d7e68a9c6553a6b94452dc7c85

SHA256
d0202dee37da4da0375e0034e802e0351cf3185cc8cd6ad041ffca4c89d97797

SHA512
0e72593a34574b463b9db613c2c14ce73c10063c382fac8e2a8f9dfc10b38784fd3f2b83d92ef72f1720988d158da5872d79ac50ece53ac08e98b89dfc8b7112

Download Submit
C:\Users\Admin\AppData\Local\4d896050-aa3b-4479-b61d-646fee99d476\build2.exe
Filesize
438KB

MD5
2f3d0323ba962334ef87ed098ad02289

SHA1
5b4c70e331af83eaf384f45a01e322b094353375

SHA256
12a51367c5c85ff3c1dc73743cface2e01accecf2879a36adbddf566d52987b3

SHA512
1e33ace1068f614bfac35aa67733c2806328b586be273a611409df87be03c5edc9e312ab213004c8fab71453ef5e34e474d9273c4a97d95d135c18f440674ad3

Download Submit
C:\Users\Admin\AppData\Local\4d896050-aa3b-4479-b61d-646fee99d476\build2.exe
Filesize
438KB

MD5
2f3d0323ba962334ef87ed098ad02289

SHA1
5b4c70e331af83eaf384f45a01e322b094353375

SHA256
12a51367c5c85ff3c1dc73743cface2e01accecf2879a36adbddf566d52987b3

SHA512
1e33ace1068f614bfac35aa67733c2806328b586be273a611409df87be03c5edc9e312ab213004c8fab71453ef5e34e474d9273c4a97d95d135c18f440674ad3

Download Submit
C:\Users\Admin\AppData\Local\4d896050-aa3b-4479-b61d-646fee99d476\build2.exe
Filesize
438KB

MD5
2f3d0323ba962334ef87ed098ad02289

SHA1
5b4c70e331af83eaf384f45a01e322b094353375

SHA256
12a51367c5c85ff3c1dc73743cface2e01accecf2879a36adbddf566d52987b3

SHA512
1e33ace1068f614bfac35aa67733c2806328b586be273a611409df87be03c5edc9e312ab213004c8fab71453ef5e34e474d9273c4a97d95d135c18f440674ad3

Download Submit
memory/3540-137-0x0000000000000000-mapping.dmp

Download
memory/3696-151-0x0000000000000000-mapping.dmp

Download
memory/3696-158-0x00000000006BD000-0x00000000006E6000-memory.dmp

Filesize
164KB

Download
memory/3696-159-0x0000000000600000-0x0000000000646000-memory.dmp

Filesize
280KB

Download
memory/4164-145-0x0000000002142000-0x00000000021D3000-memory.dmp

Filesize
580KB

Download
memory/4164-139-0x0000000000000000-mapping.dmp

Download
memory/4232-134-0x0000000002230000-0x000000000234B000-memory.dmp

Filesize
1.1MB

Download
memory/4232-133-0x0000000002199000-0x000000000222A000-memory.dmp

Filesize
580KB

Download
memory/4652-135-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4652-140-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4652-132-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4652-131-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4652-130-0x0000000000000000-mapping.dmp

Download
memory/4652-136-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4772-182-0x0000000000400000-0x0000000000459000-memory.dmp

Filesize
356KB

Download
memory/4772-154-0x0000000000000000-mapping.dmp

Download
memory/4772-155-0x0000000000400000-0x0000000000459000-memory.dmp

Filesize
356KB

Download
memory/4772-161-0x0000000000400000-0x0000000000459000-memory.dmp

Filesize
356KB

Download
memory/4772-162-0x0000000060900000-0x0000000060992000-memory.dmp

Filesize
584KB

Download
memory/4772-160-0x0000000000400000-0x0000000000459000-memory.dmp

Filesize
356KB

Download
memory/4772-157-0x0000000000400000-0x0000000000459000-memory.dmp

Filesize
356KB

Download
memory/5004-143-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/5004-150-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/5004-144-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/5004-181-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/5004-141-0x0000000000000000-mapping.dmp

Download

description	pid	process	target process
PID 4232 wrote to memory of 4652	4232	24b6effdd763befb6ff4a657e15c77bc.exe	24b6effdd763befb6ff4a657e15c77bc.exe
PID 4232 wrote to memory of 4652	4232	24b6effdd763befb6ff4a657e15c77bc.exe	24b6effdd763befb6ff4a657e15c77bc.exe
PID 4232 wrote to memory of 4652	4232	24b6effdd763befb6ff4a657e15c77bc.exe	24b6effdd763befb6ff4a657e15c77bc.exe
PID 4232 wrote to memory of 4652	4232	24b6effdd763befb6ff4a657e15c77bc.exe	24b6effdd763befb6ff4a657e15c77bc.exe
PID 4232 wrote to memory of 4652	4232	24b6effdd763befb6ff4a657e15c77bc.exe	24b6effdd763befb6ff4a657e15c77bc.exe
PID 4232 wrote to memory of 4652	4232	24b6effdd763befb6ff4a657e15c77bc.exe	24b6effdd763befb6ff4a657e15c77bc.exe
PID 4232 wrote to memory of 4652	4232	24b6effdd763befb6ff4a657e15c77bc.exe	24b6effdd763befb6ff4a657e15c77bc.exe
PID 4232 wrote to memory of 4652	4232	24b6effdd763befb6ff4a657e15c77bc.exe	24b6effdd763befb6ff4a657e15c77bc.exe
PID 4232 wrote to memory of 4652	4232	24b6effdd763befb6ff4a657e15c77bc.exe	24b6effdd763befb6ff4a657e15c77bc.exe
PID 4232 wrote to memory of 4652	4232	24b6effdd763befb6ff4a657e15c77bc.exe	24b6effdd763befb6ff4a657e15c77bc.exe
PID 4652 wrote to memory of 3540	4652	24b6effdd763befb6ff4a657e15c77bc.exe	icacls.exe
PID 4652 wrote to memory of 3540	4652	24b6effdd763befb6ff4a657e15c77bc.exe	icacls.exe
PID 4652 wrote to memory of 3540	4652	24b6effdd763befb6ff4a657e15c77bc.exe	icacls.exe
PID 4652 wrote to memory of 4164	4652	24b6effdd763befb6ff4a657e15c77bc.exe	24b6effdd763befb6ff4a657e15c77bc.exe
PID 4652 wrote to memory of 4164	4652	24b6effdd763befb6ff4a657e15c77bc.exe	24b6effdd763befb6ff4a657e15c77bc.exe
PID 4652 wrote to memory of 4164	4652	24b6effdd763befb6ff4a657e15c77bc.exe	24b6effdd763befb6ff4a657e15c77bc.exe
PID 4164 wrote to memory of 5004	4164	24b6effdd763befb6ff4a657e15c77bc.exe	24b6effdd763befb6ff4a657e15c77bc.exe
PID 4164 wrote to memory of 5004	4164	24b6effdd763befb6ff4a657e15c77bc.exe	24b6effdd763befb6ff4a657e15c77bc.exe
PID 4164 wrote to memory of 5004	4164	24b6effdd763befb6ff4a657e15c77bc.exe	24b6effdd763befb6ff4a657e15c77bc.exe
PID 4164 wrote to memory of 5004	4164	24b6effdd763befb6ff4a657e15c77bc.exe	24b6effdd763befb6ff4a657e15c77bc.exe
PID 4164 wrote to memory of 5004	4164	24b6effdd763befb6ff4a657e15c77bc.exe	24b6effdd763befb6ff4a657e15c77bc.exe
PID 4164 wrote to memory of 5004	4164	24b6effdd763befb6ff4a657e15c77bc.exe	24b6effdd763befb6ff4a657e15c77bc.exe
PID 4164 wrote to memory of 5004	4164	24b6effdd763befb6ff4a657e15c77bc.exe	24b6effdd763befb6ff4a657e15c77bc.exe
PID 4164 wrote to memory of 5004	4164	24b6effdd763befb6ff4a657e15c77bc.exe	24b6effdd763befb6ff4a657e15c77bc.exe
PID 4164 wrote to memory of 5004	4164	24b6effdd763befb6ff4a657e15c77bc.exe	24b6effdd763befb6ff4a657e15c77bc.exe
PID 4164 wrote to memory of 5004	4164	24b6effdd763befb6ff4a657e15c77bc.exe	24b6effdd763befb6ff4a657e15c77bc.exe
PID 5004 wrote to memory of 3696	5004	24b6effdd763befb6ff4a657e15c77bc.exe	build2.exe
PID 5004 wrote to memory of 3696	5004	24b6effdd763befb6ff4a657e15c77bc.exe	build2.exe
PID 5004 wrote to memory of 3696	5004	24b6effdd763befb6ff4a657e15c77bc.exe	build2.exe
PID 3696 wrote to memory of 4772	3696	build2.exe	build2.exe
PID 3696 wrote to memory of 4772	3696	build2.exe	build2.exe
PID 3696 wrote to memory of 4772	3696	build2.exe	build2.exe
PID 3696 wrote to memory of 4772	3696	build2.exe	build2.exe
PID 3696 wrote to memory of 4772	3696	build2.exe	build2.exe
PID 3696 wrote to memory of 4772	3696	build2.exe	build2.exe
PID 3696 wrote to memory of 4772	3696	build2.exe	build2.exe
PID 3696 wrote to memory of 4772	3696	build2.exe	build2.exe