djvu | 2a5bb54646132a8fc22fd55f88fc26a382357f4765ede71c6d0738df3607efaa

General

Target

2a5bb54646132a8fc22fd55f88fc26a382357f4765ede71c6d0738df3607efaa.exe
Size

780KB
MD5

ef5dd8866438bb71faca36a5ea3ad33d
SHA1

0aee2bea4d1afbbf1f26a696412cae4df503c12e
SHA256

2a5bb54646132a8fc22fd55f88fc26a382357f4765ede71c6d0738df3607efaa
SHA512

0ee7e8d57671b3d299ca7379fbedd8ff48245cb49c01900a5d489744310a89196852e64d1afb1d54af01ce9b0aa8ae1fd8b40bb84644afd6b69cf339df5d7c65

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

C2

http://tzgl.org/lancer/get.php

Attributes

extension
.yqal
offline_id
K3PMMX2aWwpnYby88Dzg7tmaIW7Tv0HMWvSyr7t1
payload_url
http://kotob.top/dl/build2.exe
http://tzgl.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-rIyEiK9ekc 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: manager@mailtemp.ch Reserve e-mail address to contact us: helprestoremanager@airmail.cc Your personal ID: 0356gSd743d

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 6 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2700-116-0x0000000004A30000-0x0000000004B4B000-memory.dmp	family_djvu
behavioral1/memory/1804-117-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1804-118-0x0000000000424141-mapping.dmp	family_djvu
behavioral1/memory/1804-119-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1132-124-0x0000000000424141-mapping.dmp	family_djvu
behavioral1/memory/1132-125-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu

Djvu Ransomware
Ransomware which is a variant of the STOP family.
ransomware djvu
Modifies file permissions 1 TTPs 1 IoCs
discovery

File Permissions Modification
T1222

Processes:

icacls.exe

pid process

2336 icacls.exe

pid	process
2336	icacls.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

2a5bb54646132a8fc22fd55f88fc26a382357f4765ede71c6d0738df3607efaa.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-941723256-3451054534-3089625102-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\feb8f281-4376-4f2d-a231-286c1d29cc52\\2a5bb54646132a8fc22fd55f88fc26a382357f4765ede71c6d0738df3607efaa.exe\" --AutoStart"	2a5bb54646132a8fc22fd55f88fc26a382357f4765ede71c6d0738df3607efaa.exe

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

8 api.2ip.ua
9 api.2ip.ua
14 api.2ip.ua

flow	ioc
8	api.2ip.ua
9	api.2ip.ua
14	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

Processes:

2a5bb54646132a8fc22fd55f88fc26a382357f4765ede71c6d0738df3607efaa.exe2a5bb54646132a8fc22fd55f88fc26a382357f4765ede71c6d0738df3607efaa.exe

description	pid	process	target process
PID 2700 set thread context of 1804	2700	2a5bb54646132a8fc22fd55f88fc26a382357f4765ede71c6d0738df3607efaa.exe	2a5bb54646132a8fc22fd55f88fc26a382357f4765ede71c6d0738df3607efaa.exe
PID 1320 set thread context of 1132	1320	2a5bb54646132a8fc22fd55f88fc26a382357f4765ede71c6d0738df3607efaa.exe	2a5bb54646132a8fc22fd55f88fc26a382357f4765ede71c6d0738df3607efaa.exe

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

System Information Discovery
T1082

Modifies system certificate store 2 TTPs 2 IoCs

evasion spyware trojan

Install Root Certificate

T1130

Modify Registry

T1112

Processes:

2a5bb54646132a8fc22fd55f88fc26a382357f4765ede71c6d0738df3607efaa.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\D1EB23A46D17D68FD92564C2F1F1601764D8E349	2a5bb54646132a8fc22fd55f88fc26a382357f4765ede71c6d0738df3607efaa.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\D1EB23A46D17D68FD92564C2F1F1601764D8E349\Blob = 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	2a5bb54646132a8fc22fd55f88fc26a382357f4765ede71c6d0738df3607efaa.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

2a5bb54646132a8fc22fd55f88fc26a382357f4765ede71c6d0738df3607efaa.exe2a5bb54646132a8fc22fd55f88fc26a382357f4765ede71c6d0738df3607efaa.exe

pid	process
1804	2a5bb54646132a8fc22fd55f88fc26a382357f4765ede71c6d0738df3607efaa.exe
1804	2a5bb54646132a8fc22fd55f88fc26a382357f4765ede71c6d0738df3607efaa.exe
1132	2a5bb54646132a8fc22fd55f88fc26a382357f4765ede71c6d0738df3607efaa.exe
1132	2a5bb54646132a8fc22fd55f88fc26a382357f4765ede71c6d0738df3607efaa.exe

Suspicious use of WriteProcessMemory 26 IoCs

Processes:

2a5bb54646132a8fc22fd55f88fc26a382357f4765ede71c6d0738df3607efaa.exe2a5bb54646132a8fc22fd55f88fc26a382357f4765ede71c6d0738df3607efaa.exe2a5bb54646132a8fc22fd55f88fc26a382357f4765ede71c6d0738df3607efaa.exe

C:\Users\Admin\AppData\Local\Temp\2a5bb54646132a8fc22fd55f88fc26a382357f4765ede71c6d0738df3607efaa.exe
"C:\Users\Admin\AppData\Local\Temp\2a5bb54646132a8fc22fd55f88fc26a382357f4765ede71c6d0738df3607efaa.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2700

C:\Users\Admin\AppData\Local\Temp\2a5bb54646132a8fc22fd55f88fc26a382357f4765ede71c6d0738df3607efaa.exe
"C:\Users\Admin\AppData\Local\Temp\2a5bb54646132a8fc22fd55f88fc26a382357f4765ede71c6d0738df3607efaa.exe"
2⤵
- Adds Run key to start application
- Modifies system certificate store
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:1804

C:\Windows\SysWOW64\icacls.exe
icacls "C:\Users\Admin\AppData\Local\feb8f281-4376-4f2d-a231-286c1d29cc52" /deny *S-1-1-0:(OI)(CI)(DE,DC)
3⤵
- Modifies file permissions
PID:2336

C:\Users\Admin\AppData\Local\Temp\2a5bb54646132a8fc22fd55f88fc26a382357f4765ede71c6d0738df3607efaa.exe
"C:\Users\Admin\AppData\Local\Temp\2a5bb54646132a8fc22fd55f88fc26a382357f4765ede71c6d0738df3607efaa.exe" --Admin IsNotAutoStart IsNotTask
3⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1320

C:\Users\Admin\AppData\Local\Temp\2a5bb54646132a8fc22fd55f88fc26a382357f4765ede71c6d0738df3607efaa.exe
"C:\Users\Admin\AppData\Local\Temp\2a5bb54646132a8fc22fd55f88fc26a382357f4765ede71c6d0738df3607efaa.exe" --Admin IsNotAutoStart IsNotTask
4⤵
- Suspicious behavior: EnumeratesProcesses
PID:1132

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

File Permissions Modification

1

T1222

Modify Registry

2

T1112

Install Root Certificate

1

T1130

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\07CEF2F654E3ED6050FFC9B6EB844250_3431D4C539FB2CFCB781821E9902850D
MD5
237cc7db072d97a949e15c2d8dbea891

SHA1
43ef7b53667e94ae04496fa6cf6efc7f9a8ba83f

SHA256
7f9669eedb0bdb3b6647128101ec024ac5fc2447bd4372fbc8b4389f5d255acb

SHA512
07c69dbcb95369ffcfdcbe402d582e7dcad1b5f2976f9156460197c891eefae41b43d2640df96d08c4ae2338a5c8d03aeaa662487d0635678d34622aede96b2b

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\B2FAF7692FD9FFBD64EDE317E42334BA_D7393C8F62BDE4D4CB606228BC7A711E
MD5
5db4d4fdb4428e5d3c794ed0a7c25958

SHA1
374866bf683c5c6a3620d7dcfe29ef04221c4723

SHA256
19ee4604acc3747d7a43fe1703dcacf39ca80e58a5f20e8607172b8f7037e45e

SHA512
8ad3ce80577dfc0e4edfb40c548d6b5ba88ca22bca51d0c9fe757d9e155372fe4c212ae12e8f7ed13fd40369a0722399b41c5f0edf9eb03de57fbd9890b2989d

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\07CEF2F654E3ED6050FFC9B6EB844250_3431D4C539FB2CFCB781821E9902850D
MD5
c507ff50bf965873ff62f5605ad4917a

SHA1
7bfc79b8ba6f875c7640c74c4b7afd02e35dcac9

SHA256
fc12960007cf238df01d225b4cc07d5e451d755a316b65dc36477a0b4e3db28f

SHA512
5ced96525e7ddb58376092c2854c86673017cde281e8537ee7cd085da93075d2193760666435eb10ac84fb5eef305f6cbee2c1e85b1ac25cef44a3c0d24fa031

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\B2FAF7692FD9FFBD64EDE317E42334BA_D7393C8F62BDE4D4CB606228BC7A711E
MD5
3c5a577100b792ab65271f154288afcc

SHA1
40d2ae7b94c00b756bd5e8140d894e7c1ff4cfc9

SHA256
b6dcbae1112abcf3da8a7e8890b4f5470c7c0b40c8f147448b169143b0c8284d

SHA512
7e4cdfd23299da80de7a9a9283df5775337d18f721342ec1efc97e72de223e8a0543cf38ebea198f024fd3798057a309d4d218903ed0e3d74a33900e53e9a51b

Download Submit
C:\Users\Admin\AppData\Local\feb8f281-4376-4f2d-a231-286c1d29cc52\2a5bb54646132a8fc22fd55f88fc26a382357f4765ede71c6d0738df3607efaa.exe
MD5
ef5dd8866438bb71faca36a5ea3ad33d

SHA1
0aee2bea4d1afbbf1f26a696412cae4df503c12e

SHA256
2a5bb54646132a8fc22fd55f88fc26a382357f4765ede71c6d0738df3607efaa

SHA512
0ee7e8d57671b3d299ca7379fbedd8ff48245cb49c01900a5d489744310a89196852e64d1afb1d54af01ce9b0aa8ae1fd8b40bb84644afd6b69cf339df5d7c65

Download Submit
memory/1132-125-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1132-124-0x0000000000424141-mapping.dmp

Download
memory/1320-122-0x0000000000000000-mapping.dmp

Download
memory/1804-119-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1804-118-0x0000000000424141-mapping.dmp

Download
memory/1804-117-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2336-120-0x0000000000000000-mapping.dmp

Download
memory/2700-116-0x0000000004A30000-0x0000000004B4B000-memory.dmp

Filesize
1.1MB

Download
memory/2700-115-0x0000000004990000-0x0000000004A21000-memory.dmp

Filesize
580KB

Download

description	pid	process	target process
PID 2700 wrote to memory of 1804	2700	2a5bb54646132a8fc22fd55f88fc26a382357f4765ede71c6d0738df3607efaa.exe	2a5bb54646132a8fc22fd55f88fc26a382357f4765ede71c6d0738df3607efaa.exe
PID 2700 wrote to memory of 1804	2700	2a5bb54646132a8fc22fd55f88fc26a382357f4765ede71c6d0738df3607efaa.exe	2a5bb54646132a8fc22fd55f88fc26a382357f4765ede71c6d0738df3607efaa.exe
PID 2700 wrote to memory of 1804	2700	2a5bb54646132a8fc22fd55f88fc26a382357f4765ede71c6d0738df3607efaa.exe	2a5bb54646132a8fc22fd55f88fc26a382357f4765ede71c6d0738df3607efaa.exe
PID 2700 wrote to memory of 1804	2700	2a5bb54646132a8fc22fd55f88fc26a382357f4765ede71c6d0738df3607efaa.exe	2a5bb54646132a8fc22fd55f88fc26a382357f4765ede71c6d0738df3607efaa.exe
PID 2700 wrote to memory of 1804	2700	2a5bb54646132a8fc22fd55f88fc26a382357f4765ede71c6d0738df3607efaa.exe	2a5bb54646132a8fc22fd55f88fc26a382357f4765ede71c6d0738df3607efaa.exe
PID 2700 wrote to memory of 1804	2700	2a5bb54646132a8fc22fd55f88fc26a382357f4765ede71c6d0738df3607efaa.exe	2a5bb54646132a8fc22fd55f88fc26a382357f4765ede71c6d0738df3607efaa.exe
PID 2700 wrote to memory of 1804	2700	2a5bb54646132a8fc22fd55f88fc26a382357f4765ede71c6d0738df3607efaa.exe	2a5bb54646132a8fc22fd55f88fc26a382357f4765ede71c6d0738df3607efaa.exe
PID 2700 wrote to memory of 1804	2700	2a5bb54646132a8fc22fd55f88fc26a382357f4765ede71c6d0738df3607efaa.exe	2a5bb54646132a8fc22fd55f88fc26a382357f4765ede71c6d0738df3607efaa.exe
PID 2700 wrote to memory of 1804	2700	2a5bb54646132a8fc22fd55f88fc26a382357f4765ede71c6d0738df3607efaa.exe	2a5bb54646132a8fc22fd55f88fc26a382357f4765ede71c6d0738df3607efaa.exe
PID 2700 wrote to memory of 1804	2700	2a5bb54646132a8fc22fd55f88fc26a382357f4765ede71c6d0738df3607efaa.exe	2a5bb54646132a8fc22fd55f88fc26a382357f4765ede71c6d0738df3607efaa.exe
PID 1804 wrote to memory of 2336	1804	2a5bb54646132a8fc22fd55f88fc26a382357f4765ede71c6d0738df3607efaa.exe	icacls.exe
PID 1804 wrote to memory of 2336	1804	2a5bb54646132a8fc22fd55f88fc26a382357f4765ede71c6d0738df3607efaa.exe	icacls.exe
PID 1804 wrote to memory of 2336	1804	2a5bb54646132a8fc22fd55f88fc26a382357f4765ede71c6d0738df3607efaa.exe	icacls.exe
PID 1804 wrote to memory of 1320	1804	2a5bb54646132a8fc22fd55f88fc26a382357f4765ede71c6d0738df3607efaa.exe	2a5bb54646132a8fc22fd55f88fc26a382357f4765ede71c6d0738df3607efaa.exe
PID 1804 wrote to memory of 1320	1804	2a5bb54646132a8fc22fd55f88fc26a382357f4765ede71c6d0738df3607efaa.exe	2a5bb54646132a8fc22fd55f88fc26a382357f4765ede71c6d0738df3607efaa.exe
PID 1804 wrote to memory of 1320	1804	2a5bb54646132a8fc22fd55f88fc26a382357f4765ede71c6d0738df3607efaa.exe	2a5bb54646132a8fc22fd55f88fc26a382357f4765ede71c6d0738df3607efaa.exe
PID 1320 wrote to memory of 1132	1320	2a5bb54646132a8fc22fd55f88fc26a382357f4765ede71c6d0738df3607efaa.exe	2a5bb54646132a8fc22fd55f88fc26a382357f4765ede71c6d0738df3607efaa.exe
PID 1320 wrote to memory of 1132	1320	2a5bb54646132a8fc22fd55f88fc26a382357f4765ede71c6d0738df3607efaa.exe	2a5bb54646132a8fc22fd55f88fc26a382357f4765ede71c6d0738df3607efaa.exe
PID 1320 wrote to memory of 1132	1320	2a5bb54646132a8fc22fd55f88fc26a382357f4765ede71c6d0738df3607efaa.exe	2a5bb54646132a8fc22fd55f88fc26a382357f4765ede71c6d0738df3607efaa.exe
PID 1320 wrote to memory of 1132	1320	2a5bb54646132a8fc22fd55f88fc26a382357f4765ede71c6d0738df3607efaa.exe	2a5bb54646132a8fc22fd55f88fc26a382357f4765ede71c6d0738df3607efaa.exe
PID 1320 wrote to memory of 1132	1320	2a5bb54646132a8fc22fd55f88fc26a382357f4765ede71c6d0738df3607efaa.exe	2a5bb54646132a8fc22fd55f88fc26a382357f4765ede71c6d0738df3607efaa.exe
PID 1320 wrote to memory of 1132	1320	2a5bb54646132a8fc22fd55f88fc26a382357f4765ede71c6d0738df3607efaa.exe	2a5bb54646132a8fc22fd55f88fc26a382357f4765ede71c6d0738df3607efaa.exe
PID 1320 wrote to memory of 1132	1320	2a5bb54646132a8fc22fd55f88fc26a382357f4765ede71c6d0738df3607efaa.exe	2a5bb54646132a8fc22fd55f88fc26a382357f4765ede71c6d0738df3607efaa.exe
PID 1320 wrote to memory of 1132	1320	2a5bb54646132a8fc22fd55f88fc26a382357f4765ede71c6d0738df3607efaa.exe	2a5bb54646132a8fc22fd55f88fc26a382357f4765ede71c6d0738df3607efaa.exe
PID 1320 wrote to memory of 1132	1320	2a5bb54646132a8fc22fd55f88fc26a382357f4765ede71c6d0738df3607efaa.exe	2a5bb54646132a8fc22fd55f88fc26a382357f4765ede71c6d0738df3607efaa.exe
PID 1320 wrote to memory of 1132	1320	2a5bb54646132a8fc22fd55f88fc26a382357f4765ede71c6d0738df3607efaa.exe	2a5bb54646132a8fc22fd55f88fc26a382357f4765ede71c6d0738df3607efaa.exe

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads