djvu | 8ed183df76d08024f15e051f4f5711535dde6372ff4beafecfff07f82e846800

Analysis

max time kernel
179s
max time network
173s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
01-01-2024 15:12

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General

Target

a1bd0fa8ada1da0181b8d108ca72a41795b55060613e0182f2cbbc592f857f46.exe
Size

740KB
MD5

b0475c2ee7b9c7f2ed5a8d6d8a8c4b5d
SHA1

18845f37a2ffa83d62eed48f608019b1200f5ee2
SHA256

a1bd0fa8ada1da0181b8d108ca72a41795b55060613e0182f2cbbc592f857f46
SHA512

6b860b7e7ed3f2e459e825df5e4c7d2e571c1b6dd922d8b57aeda1842463f66742e7365687ec45bc348efdde27441960f04e42b94e796fa80ef9383a7ad0cc47
SSDEEP

12288:aSVJ90fbghORSIZgVf4wYDfpCwmx1jGHL+gQqGjcj366YEwrJUDHeW9:aSVGbghTVf5FXqIqGjcj36gYnW9

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

http://zexeq.com/lancer/get.php

Attributes

extension
.hgew
offline_id
Nk8w6hJsuGrE3s2SYWM3ehMUHvjgVRqqgX84dat1
payload_url
http://colisumy.com/dl/build2.exe
http://zexeq.com/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-iTbDHY13BX 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@freshmail.top Reserve e-mail address to contact us: datarestorehelp@airmail.cc Your personal ID: 0780JOsie

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 10 IoCs

Processes:

resource	yara_rule
behavioral30/memory/2308-1-0x0000000004300000-0x000000000441B000-memory.dmp	family_djvu
behavioral30/memory/2916-2-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral30/memory/2916-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral30/memory/2916-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral30/memory/2916-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral30/memory/2916-18-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral30/memory/2916-19-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral30/memory/752-23-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral30/memory/752-24-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral30/memory/752-26-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu

Djvu Ransomware
Ransomware which is a variant of the STOP family.
ransomware djvu

Checks computer location settings 2 TTPs 1 IoCs

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

Query Registry

T1012

System Information Discovery

T1082

Processes:

a1bd0fa8ada1da0181b8d108ca72a41795b55060613e0182f2cbbc592f857f46.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-996941297-2279405024-2328152752-1000\Control Panel\International\Geo\Nation	a1bd0fa8ada1da0181b8d108ca72a41795b55060613e0182f2cbbc592f857f46.exe

Modifies file permissions 1 TTPs 1 IoCs
discovery

File and Directory Permissions Modification
T1222

Processes:

icacls.exe

pid process

4180 icacls.exe

pid	process
4180	icacls.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

a1bd0fa8ada1da0181b8d108ca72a41795b55060613e0182f2cbbc592f857f46.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-996941297-2279405024-2328152752-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\acab2d06-b048-4611-8748-7daabee3a006\\a1bd0fa8ada1da0181b8d108ca72a41795b55060613e0182f2cbbc592f857f46.exe\" --AutoStart"	a1bd0fa8ada1da0181b8d108ca72a41795b55060613e0182f2cbbc592f857f46.exe

Looks up external IP address via web service 2 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.

Processes:

flow ioc

61 api.2ip.ua
62 api.2ip.ua

flow	ioc
61	api.2ip.ua
62	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

Processes:

a1bd0fa8ada1da0181b8d108ca72a41795b55060613e0182f2cbbc592f857f46.exea1bd0fa8ada1da0181b8d108ca72a41795b55060613e0182f2cbbc592f857f46.exe

description	pid	process	target process
PID 2308 set thread context of 2916	2308	a1bd0fa8ada1da0181b8d108ca72a41795b55060613e0182f2cbbc592f857f46.exe	a1bd0fa8ada1da0181b8d108ca72a41795b55060613e0182f2cbbc592f857f46.exe
PID 3204 set thread context of 752	3204	a1bd0fa8ada1da0181b8d108ca72a41795b55060613e0182f2cbbc592f857f46.exe	a1bd0fa8ada1da0181b8d108ca72a41795b55060613e0182f2cbbc592f857f46.exe

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

System Information Discovery
T1082
Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

3420 752 WerFault.exe a1bd0fa8ada1da0181b8d108ca72a41795b55060613e0182f2cbbc592f857f46.exe

pid	pid_target	process	target process
3420	752	WerFault.exe	a1bd0fa8ada1da0181b8d108ca72a41795b55060613e0182f2cbbc592f857f46.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

a1bd0fa8ada1da0181b8d108ca72a41795b55060613e0182f2cbbc592f857f46.exe

pid	process
2916	a1bd0fa8ada1da0181b8d108ca72a41795b55060613e0182f2cbbc592f857f46.exe
2916	a1bd0fa8ada1da0181b8d108ca72a41795b55060613e0182f2cbbc592f857f46.exe

Suspicious use of WriteProcessMemory 26 IoCs

Processes:

a1bd0fa8ada1da0181b8d108ca72a41795b55060613e0182f2cbbc592f857f46.exea1bd0fa8ada1da0181b8d108ca72a41795b55060613e0182f2cbbc592f857f46.exea1bd0fa8ada1da0181b8d108ca72a41795b55060613e0182f2cbbc592f857f46.exe

C:\Users\Admin\AppData\Local\Temp\a1bd0fa8ada1da0181b8d108ca72a41795b55060613e0182f2cbbc592f857f46.exe
"C:\Users\Admin\AppData\Local\Temp\a1bd0fa8ada1da0181b8d108ca72a41795b55060613e0182f2cbbc592f857f46.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2308

C:\Users\Admin\AppData\Local\Temp\a1bd0fa8ada1da0181b8d108ca72a41795b55060613e0182f2cbbc592f857f46.exe
"C:\Users\Admin\AppData\Local\Temp\a1bd0fa8ada1da0181b8d108ca72a41795b55060613e0182f2cbbc592f857f46.exe"
2⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2916

C:\Windows\SysWOW64\icacls.exe
icacls "C:\Users\Admin\AppData\Local\acab2d06-b048-4611-8748-7daabee3a006" /deny *S-1-1-0:(OI)(CI)(DE,DC)
3⤵
- Modifies file permissions
PID:4180

C:\Users\Admin\AppData\Local\Temp\a1bd0fa8ada1da0181b8d108ca72a41795b55060613e0182f2cbbc592f857f46.exe
"C:\Users\Admin\AppData\Local\Temp\a1bd0fa8ada1da0181b8d108ca72a41795b55060613e0182f2cbbc592f857f46.exe" --Admin IsNotAutoStart IsNotTask
3⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3204

C:\Users\Admin\AppData\Local\Temp\a1bd0fa8ada1da0181b8d108ca72a41795b55060613e0182f2cbbc592f857f46.exe
"C:\Users\Admin\AppData\Local\Temp\a1bd0fa8ada1da0181b8d108ca72a41795b55060613e0182f2cbbc592f857f46.exe" --Admin IsNotAutoStart IsNotTask
4⤵
PID:752

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 752 -s 568
5⤵
- Program crash
PID:3420

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 428 -p 752 -ip 752
1⤵
PID:4572

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

File and Directory Permissions Modification

T1222

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\acab2d06-b048-4611-8748-7daabee3a006\a1bd0fa8ada1da0181b8d108ca72a41795b55060613e0182f2cbbc592f857f46.exe
Filesize
740KB

MD5
b0475c2ee7b9c7f2ed5a8d6d8a8c4b5d

SHA1
18845f37a2ffa83d62eed48f608019b1200f5ee2

SHA256
a1bd0fa8ada1da0181b8d108ca72a41795b55060613e0182f2cbbc592f857f46

SHA512
6b860b7e7ed3f2e459e825df5e4c7d2e571c1b6dd922d8b57aeda1842463f66742e7365687ec45bc348efdde27441960f04e42b94e796fa80ef9383a7ad0cc47

Download Submit
memory/752-26-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/752-24-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/752-23-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2308-1-0x0000000004300000-0x000000000441B000-memory.dmp

Filesize
1.1MB

Download
memory/2308-4-0x0000000004260000-0x00000000042F1000-memory.dmp

Filesize
580KB

Download
memory/2308-0-0x0000000004260000-0x00000000042F1000-memory.dmp

Filesize
580KB

Download
memory/2916-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2916-18-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2916-19-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2916-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2916-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2916-2-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3204-21-0x0000000004110000-0x00000000041A1000-memory.dmp

Filesize
580KB

Download

description	pid	process	target process
PID 2308 wrote to memory of 2916	2308	a1bd0fa8ada1da0181b8d108ca72a41795b55060613e0182f2cbbc592f857f46.exe	a1bd0fa8ada1da0181b8d108ca72a41795b55060613e0182f2cbbc592f857f46.exe
PID 2308 wrote to memory of 2916	2308	a1bd0fa8ada1da0181b8d108ca72a41795b55060613e0182f2cbbc592f857f46.exe	a1bd0fa8ada1da0181b8d108ca72a41795b55060613e0182f2cbbc592f857f46.exe
PID 2308 wrote to memory of 2916	2308	a1bd0fa8ada1da0181b8d108ca72a41795b55060613e0182f2cbbc592f857f46.exe	a1bd0fa8ada1da0181b8d108ca72a41795b55060613e0182f2cbbc592f857f46.exe
PID 2308 wrote to memory of 2916	2308	a1bd0fa8ada1da0181b8d108ca72a41795b55060613e0182f2cbbc592f857f46.exe	a1bd0fa8ada1da0181b8d108ca72a41795b55060613e0182f2cbbc592f857f46.exe
PID 2308 wrote to memory of 2916	2308	a1bd0fa8ada1da0181b8d108ca72a41795b55060613e0182f2cbbc592f857f46.exe	a1bd0fa8ada1da0181b8d108ca72a41795b55060613e0182f2cbbc592f857f46.exe
PID 2308 wrote to memory of 2916	2308	a1bd0fa8ada1da0181b8d108ca72a41795b55060613e0182f2cbbc592f857f46.exe	a1bd0fa8ada1da0181b8d108ca72a41795b55060613e0182f2cbbc592f857f46.exe
PID 2308 wrote to memory of 2916	2308	a1bd0fa8ada1da0181b8d108ca72a41795b55060613e0182f2cbbc592f857f46.exe	a1bd0fa8ada1da0181b8d108ca72a41795b55060613e0182f2cbbc592f857f46.exe
PID 2308 wrote to memory of 2916	2308	a1bd0fa8ada1da0181b8d108ca72a41795b55060613e0182f2cbbc592f857f46.exe	a1bd0fa8ada1da0181b8d108ca72a41795b55060613e0182f2cbbc592f857f46.exe
PID 2308 wrote to memory of 2916	2308	a1bd0fa8ada1da0181b8d108ca72a41795b55060613e0182f2cbbc592f857f46.exe	a1bd0fa8ada1da0181b8d108ca72a41795b55060613e0182f2cbbc592f857f46.exe
PID 2308 wrote to memory of 2916	2308	a1bd0fa8ada1da0181b8d108ca72a41795b55060613e0182f2cbbc592f857f46.exe	a1bd0fa8ada1da0181b8d108ca72a41795b55060613e0182f2cbbc592f857f46.exe
PID 2916 wrote to memory of 4180	2916	a1bd0fa8ada1da0181b8d108ca72a41795b55060613e0182f2cbbc592f857f46.exe	icacls.exe
PID 2916 wrote to memory of 4180	2916	a1bd0fa8ada1da0181b8d108ca72a41795b55060613e0182f2cbbc592f857f46.exe	icacls.exe
PID 2916 wrote to memory of 4180	2916	a1bd0fa8ada1da0181b8d108ca72a41795b55060613e0182f2cbbc592f857f46.exe	icacls.exe
PID 2916 wrote to memory of 3204	2916	a1bd0fa8ada1da0181b8d108ca72a41795b55060613e0182f2cbbc592f857f46.exe	a1bd0fa8ada1da0181b8d108ca72a41795b55060613e0182f2cbbc592f857f46.exe
PID 2916 wrote to memory of 3204	2916	a1bd0fa8ada1da0181b8d108ca72a41795b55060613e0182f2cbbc592f857f46.exe	a1bd0fa8ada1da0181b8d108ca72a41795b55060613e0182f2cbbc592f857f46.exe
PID 2916 wrote to memory of 3204	2916	a1bd0fa8ada1da0181b8d108ca72a41795b55060613e0182f2cbbc592f857f46.exe	a1bd0fa8ada1da0181b8d108ca72a41795b55060613e0182f2cbbc592f857f46.exe
PID 3204 wrote to memory of 752	3204	a1bd0fa8ada1da0181b8d108ca72a41795b55060613e0182f2cbbc592f857f46.exe	a1bd0fa8ada1da0181b8d108ca72a41795b55060613e0182f2cbbc592f857f46.exe
PID 3204 wrote to memory of 752	3204	a1bd0fa8ada1da0181b8d108ca72a41795b55060613e0182f2cbbc592f857f46.exe	a1bd0fa8ada1da0181b8d108ca72a41795b55060613e0182f2cbbc592f857f46.exe
PID 3204 wrote to memory of 752	3204	a1bd0fa8ada1da0181b8d108ca72a41795b55060613e0182f2cbbc592f857f46.exe	a1bd0fa8ada1da0181b8d108ca72a41795b55060613e0182f2cbbc592f857f46.exe
PID 3204 wrote to memory of 752	3204	a1bd0fa8ada1da0181b8d108ca72a41795b55060613e0182f2cbbc592f857f46.exe	a1bd0fa8ada1da0181b8d108ca72a41795b55060613e0182f2cbbc592f857f46.exe
PID 3204 wrote to memory of 752	3204	a1bd0fa8ada1da0181b8d108ca72a41795b55060613e0182f2cbbc592f857f46.exe	a1bd0fa8ada1da0181b8d108ca72a41795b55060613e0182f2cbbc592f857f46.exe
PID 3204 wrote to memory of 752	3204	a1bd0fa8ada1da0181b8d108ca72a41795b55060613e0182f2cbbc592f857f46.exe	a1bd0fa8ada1da0181b8d108ca72a41795b55060613e0182f2cbbc592f857f46.exe
PID 3204 wrote to memory of 752	3204	a1bd0fa8ada1da0181b8d108ca72a41795b55060613e0182f2cbbc592f857f46.exe	a1bd0fa8ada1da0181b8d108ca72a41795b55060613e0182f2cbbc592f857f46.exe
PID 3204 wrote to memory of 752	3204	a1bd0fa8ada1da0181b8d108ca72a41795b55060613e0182f2cbbc592f857f46.exe	a1bd0fa8ada1da0181b8d108ca72a41795b55060613e0182f2cbbc592f857f46.exe
PID 3204 wrote to memory of 752	3204	a1bd0fa8ada1da0181b8d108ca72a41795b55060613e0182f2cbbc592f857f46.exe	a1bd0fa8ada1da0181b8d108ca72a41795b55060613e0182f2cbbc592f857f46.exe
PID 3204 wrote to memory of 752	3204	a1bd0fa8ada1da0181b8d108ca72a41795b55060613e0182f2cbbc592f857f46.exe	a1bd0fa8ada1da0181b8d108ca72a41795b55060613e0182f2cbbc592f857f46.exe