djvu | 128c7001cb0476aece7f57461312ec5de57d8cb756a7775fb5bdc25c14c9b823

General

Target

128c7001cb0476aece7f57461312ec5de57d8cb756a7775fb5bdc25c14c9b823.exe
Size

764KB
MD5

c633e766daac36206adbffc499b03a2d
SHA1

34f34526455fcc20eea7306c3e99e16647c553a4
SHA256

128c7001cb0476aece7f57461312ec5de57d8cb756a7775fb5bdc25c14c9b823
SHA512

076220513aa90b287b0cf3675f77b0661082a8d63a6fe79a169052f74c825fa773d08e276cd7889deccf0761ef2621dc06b5cc1362f3233db0c4ff86ec19c176
SSDEEP

12288:aM7M9bs1ZZttGz2uyxQNgvw4QA4kjVQhThMAbCfaPSFmJLK72GL:cshz0yro7A5AFsTCW7L

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

C2

http://cajgtus.com/test2/get.php

Attributes

extension
.bgzq
offline_id
Z6iwSvCoAt8T8K2ROxecuXHPNHv7eDyWrc8Ks7t1
payload_url
http://sdfjhuz.com/dl/build2.exe
http://cajgtus.com/files/1/build3.exe
ransomnote
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rsa_pubkey.plain

Signatures

Detected Djvu ransomware 17 IoCs

Processes:

resource	yara_rule
behavioral1/memory/836-2-0x0000000005F60000-0x000000000607B000-memory.dmp	family_djvu
behavioral1/memory/2320-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2320-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2320-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2320-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2320-17-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1244-22-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1244-23-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1244-24-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1244-29-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1244-30-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1244-31-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1244-35-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1244-37-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1244-38-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1244-39-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1244-40-0x0000000000400000-0x0000000000537000-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:

128c7001cb0476aece7f57461312ec5de57d8cb756a7775fb5bdc25c14c9b823.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2177723727-746291240-1644359950-1000\Control Panel\International\Geo\Nation	128c7001cb0476aece7f57461312ec5de57d8cb756a7775fb5bdc25c14c9b823.exe

Modifies file permissions 1 TTPs 1 IoCs
discovery

File and Directory Permissions Modification
T1222

Processes:

icacls.exe

pid process

2192 icacls.exe

pid	process
2192	icacls.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

128c7001cb0476aece7f57461312ec5de57d8cb756a7775fb5bdc25c14c9b823.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2177723727-746291240-1644359950-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\6ed361f9-a558-4306-9745-b30714be7bb8\\128c7001cb0476aece7f57461312ec5de57d8cb756a7775fb5bdc25c14c9b823.exe\" --AutoStart"	128c7001cb0476aece7f57461312ec5de57d8cb756a7775fb5bdc25c14c9b823.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

30 api.2ip.ua
9 api.2ip.ua
10 api.2ip.ua

flow	ioc
30	api.2ip.ua
9	api.2ip.ua
10	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

Processes:

128c7001cb0476aece7f57461312ec5de57d8cb756a7775fb5bdc25c14c9b823.exe128c7001cb0476aece7f57461312ec5de57d8cb756a7775fb5bdc25c14c9b823.exe

description	pid	process	target process
PID 836 set thread context of 2320	836	128c7001cb0476aece7f57461312ec5de57d8cb756a7775fb5bdc25c14c9b823.exe	128c7001cb0476aece7f57461312ec5de57d8cb756a7775fb5bdc25c14c9b823.exe
PID 4996 set thread context of 1244	4996	128c7001cb0476aece7f57461312ec5de57d8cb756a7775fb5bdc25c14c9b823.exe	128c7001cb0476aece7f57461312ec5de57d8cb756a7775fb5bdc25c14c9b823.exe

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

128c7001cb0476aece7f57461312ec5de57d8cb756a7775fb5bdc25c14c9b823.exe128c7001cb0476aece7f57461312ec5de57d8cb756a7775fb5bdc25c14c9b823.exe

pid	process
2320	128c7001cb0476aece7f57461312ec5de57d8cb756a7775fb5bdc25c14c9b823.exe
2320	128c7001cb0476aece7f57461312ec5de57d8cb756a7775fb5bdc25c14c9b823.exe
1244	128c7001cb0476aece7f57461312ec5de57d8cb756a7775fb5bdc25c14c9b823.exe
1244	128c7001cb0476aece7f57461312ec5de57d8cb756a7775fb5bdc25c14c9b823.exe

Suspicious use of WriteProcessMemory 26 IoCs

Processes:

128c7001cb0476aece7f57461312ec5de57d8cb756a7775fb5bdc25c14c9b823.exe128c7001cb0476aece7f57461312ec5de57d8cb756a7775fb5bdc25c14c9b823.exe128c7001cb0476aece7f57461312ec5de57d8cb756a7775fb5bdc25c14c9b823.exe

C:\Users\Admin\AppData\Local\Temp\128c7001cb0476aece7f57461312ec5de57d8cb756a7775fb5bdc25c14c9b823.exe
"C:\Users\Admin\AppData\Local\Temp\128c7001cb0476aece7f57461312ec5de57d8cb756a7775fb5bdc25c14c9b823.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:836

C:\Users\Admin\AppData\Local\Temp\128c7001cb0476aece7f57461312ec5de57d8cb756a7775fb5bdc25c14c9b823.exe
"C:\Users\Admin\AppData\Local\Temp\128c7001cb0476aece7f57461312ec5de57d8cb756a7775fb5bdc25c14c9b823.exe"
2⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2320

C:\Windows\SysWOW64\icacls.exe
icacls "C:\Users\Admin\AppData\Local\6ed361f9-a558-4306-9745-b30714be7bb8" /deny *S-1-1-0:(OI)(CI)(DE,DC)
3⤵
- Modifies file permissions
PID:2192

C:\Users\Admin\AppData\Local\Temp\128c7001cb0476aece7f57461312ec5de57d8cb756a7775fb5bdc25c14c9b823.exe
"C:\Users\Admin\AppData\Local\Temp\128c7001cb0476aece7f57461312ec5de57d8cb756a7775fb5bdc25c14c9b823.exe" --Admin IsNotAutoStart IsNotTask
3⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4996

C:\Users\Admin\AppData\Local\Temp\128c7001cb0476aece7f57461312ec5de57d8cb756a7775fb5bdc25c14c9b823.exe
"C:\Users\Admin\AppData\Local\Temp\128c7001cb0476aece7f57461312ec5de57d8cb756a7775fb5bdc25c14c9b823.exe" --Admin IsNotAutoStart IsNotTask
4⤵
- Suspicious behavior: EnumeratesProcesses
PID:1244

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

File and Directory Permissions Modification

1

T1222

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA
Filesize
1KB

MD5
b976722e6aa4d29d0c420c7b71ee206a

SHA1
fa154a81a9adcff6ae004eb5a020eeab7bf1e6a0

SHA256
fe8079d0a697efbc9cd448968ec09f9a24aa17646114be475c4864d04b57c808

SHA512
b73be5f9fa8747c50c8bc736a3608d2a0393ce49f11fe0cb39c894d4f87455d55bcd0dd100f81d0ac8830fa72a98fbb15914115716d783a422600e576ab672ff

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464
Filesize
724B

MD5
8202a1cd02e7d69597995cabbe881a12

SHA1
8858d9d934b7aa9330ee73de6c476acf19929ff6

SHA256
58f381c3a0a0ace6321da22e40bd44a597bd98b9c9390ab9258426b5cf75a7a5

SHA512
97ba9fceab995d4bef706f8deef99e06862999734ebe6a05832c710104479c6337cbf0a76e1c1e0f91566a61334dc100d837dfd049e20da765fe49def684f9c9

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA
Filesize
410B

MD5
21aa4714cb733bced1a4088576e48c68

SHA1
ac9d6f1488f1c4ee30e1bad41fc80a510e8ee88e

SHA256
1606117f94226e61588216bef8c1e2392db26cce353ca7dcca0a7278dbaea282

SHA512
8c28351d60accfd51bbcb926b6cd6a9b02fb3e3bcc798e4e2ce631757e0c9ef355b74f9fe11c7947950fc43f025fa8d61031b3a49e610e0ddb1806dc20e7dda2

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464
Filesize
392B

MD5
3d9b6ddb921e4286d420ecce02ace49b

SHA1
20c94771dbe5b63e6676470280cd736184dd6c5b

SHA256
4bbd7a4d899c5869b2f45f1fddc0b56725cc68823e27f28ec5101d5c60669cc5

SHA512
5776ea79e5e496949b3f69e48d8275559c5b246e9c4aac4dcadb9a1ff5412e438767859c4b815f9519c501928bbc14528b046330be56c55d52f778db1845adcc

Download Submit
C:\Users\Admin\AppData\Local\6ed361f9-a558-4306-9745-b30714be7bb8\128c7001cb0476aece7f57461312ec5de57d8cb756a7775fb5bdc25c14c9b823.exe
Filesize
764KB

MD5
c633e766daac36206adbffc499b03a2d

SHA1
34f34526455fcc20eea7306c3e99e16647c553a4

SHA256
128c7001cb0476aece7f57461312ec5de57d8cb756a7775fb5bdc25c14c9b823

SHA512
076220513aa90b287b0cf3675f77b0661082a8d63a6fe79a169052f74c825fa773d08e276cd7889deccf0761ef2621dc06b5cc1362f3233db0c4ff86ec19c176

Download Submit
memory/836-2-0x0000000005F60000-0x000000000607B000-memory.dmp

Filesize
1.1MB

Download
memory/836-1-0x00000000046A0000-0x000000000473A000-memory.dmp

Filesize
616KB

Download
memory/1244-30-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1244-37-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1244-22-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1244-23-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1244-24-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1244-40-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1244-39-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1244-38-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1244-35-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1244-29-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1244-31-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2320-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2320-17-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2320-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2320-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2320-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4996-20-0x0000000004430000-0x00000000044C5000-memory.dmp

Filesize
596KB

Download

description	pid	process	target process
PID 836 wrote to memory of 2320	836	128c7001cb0476aece7f57461312ec5de57d8cb756a7775fb5bdc25c14c9b823.exe	128c7001cb0476aece7f57461312ec5de57d8cb756a7775fb5bdc25c14c9b823.exe
PID 836 wrote to memory of 2320	836	128c7001cb0476aece7f57461312ec5de57d8cb756a7775fb5bdc25c14c9b823.exe	128c7001cb0476aece7f57461312ec5de57d8cb756a7775fb5bdc25c14c9b823.exe
PID 836 wrote to memory of 2320	836	128c7001cb0476aece7f57461312ec5de57d8cb756a7775fb5bdc25c14c9b823.exe	128c7001cb0476aece7f57461312ec5de57d8cb756a7775fb5bdc25c14c9b823.exe
PID 836 wrote to memory of 2320	836	128c7001cb0476aece7f57461312ec5de57d8cb756a7775fb5bdc25c14c9b823.exe	128c7001cb0476aece7f57461312ec5de57d8cb756a7775fb5bdc25c14c9b823.exe
PID 836 wrote to memory of 2320	836	128c7001cb0476aece7f57461312ec5de57d8cb756a7775fb5bdc25c14c9b823.exe	128c7001cb0476aece7f57461312ec5de57d8cb756a7775fb5bdc25c14c9b823.exe
PID 836 wrote to memory of 2320	836	128c7001cb0476aece7f57461312ec5de57d8cb756a7775fb5bdc25c14c9b823.exe	128c7001cb0476aece7f57461312ec5de57d8cb756a7775fb5bdc25c14c9b823.exe
PID 836 wrote to memory of 2320	836	128c7001cb0476aece7f57461312ec5de57d8cb756a7775fb5bdc25c14c9b823.exe	128c7001cb0476aece7f57461312ec5de57d8cb756a7775fb5bdc25c14c9b823.exe
PID 836 wrote to memory of 2320	836	128c7001cb0476aece7f57461312ec5de57d8cb756a7775fb5bdc25c14c9b823.exe	128c7001cb0476aece7f57461312ec5de57d8cb756a7775fb5bdc25c14c9b823.exe
PID 836 wrote to memory of 2320	836	128c7001cb0476aece7f57461312ec5de57d8cb756a7775fb5bdc25c14c9b823.exe	128c7001cb0476aece7f57461312ec5de57d8cb756a7775fb5bdc25c14c9b823.exe
PID 836 wrote to memory of 2320	836	128c7001cb0476aece7f57461312ec5de57d8cb756a7775fb5bdc25c14c9b823.exe	128c7001cb0476aece7f57461312ec5de57d8cb756a7775fb5bdc25c14c9b823.exe
PID 2320 wrote to memory of 2192	2320	128c7001cb0476aece7f57461312ec5de57d8cb756a7775fb5bdc25c14c9b823.exe	icacls.exe
PID 2320 wrote to memory of 2192	2320	128c7001cb0476aece7f57461312ec5de57d8cb756a7775fb5bdc25c14c9b823.exe	icacls.exe
PID 2320 wrote to memory of 2192	2320	128c7001cb0476aece7f57461312ec5de57d8cb756a7775fb5bdc25c14c9b823.exe	icacls.exe
PID 2320 wrote to memory of 4996	2320	128c7001cb0476aece7f57461312ec5de57d8cb756a7775fb5bdc25c14c9b823.exe	128c7001cb0476aece7f57461312ec5de57d8cb756a7775fb5bdc25c14c9b823.exe
PID 2320 wrote to memory of 4996	2320	128c7001cb0476aece7f57461312ec5de57d8cb756a7775fb5bdc25c14c9b823.exe	128c7001cb0476aece7f57461312ec5de57d8cb756a7775fb5bdc25c14c9b823.exe
PID 2320 wrote to memory of 4996	2320	128c7001cb0476aece7f57461312ec5de57d8cb756a7775fb5bdc25c14c9b823.exe	128c7001cb0476aece7f57461312ec5de57d8cb756a7775fb5bdc25c14c9b823.exe
PID 4996 wrote to memory of 1244	4996	128c7001cb0476aece7f57461312ec5de57d8cb756a7775fb5bdc25c14c9b823.exe	128c7001cb0476aece7f57461312ec5de57d8cb756a7775fb5bdc25c14c9b823.exe
PID 4996 wrote to memory of 1244	4996	128c7001cb0476aece7f57461312ec5de57d8cb756a7775fb5bdc25c14c9b823.exe	128c7001cb0476aece7f57461312ec5de57d8cb756a7775fb5bdc25c14c9b823.exe
PID 4996 wrote to memory of 1244	4996	128c7001cb0476aece7f57461312ec5de57d8cb756a7775fb5bdc25c14c9b823.exe	128c7001cb0476aece7f57461312ec5de57d8cb756a7775fb5bdc25c14c9b823.exe
PID 4996 wrote to memory of 1244	4996	128c7001cb0476aece7f57461312ec5de57d8cb756a7775fb5bdc25c14c9b823.exe	128c7001cb0476aece7f57461312ec5de57d8cb756a7775fb5bdc25c14c9b823.exe
PID 4996 wrote to memory of 1244	4996	128c7001cb0476aece7f57461312ec5de57d8cb756a7775fb5bdc25c14c9b823.exe	128c7001cb0476aece7f57461312ec5de57d8cb756a7775fb5bdc25c14c9b823.exe
PID 4996 wrote to memory of 1244	4996	128c7001cb0476aece7f57461312ec5de57d8cb756a7775fb5bdc25c14c9b823.exe	128c7001cb0476aece7f57461312ec5de57d8cb756a7775fb5bdc25c14c9b823.exe
PID 4996 wrote to memory of 1244	4996	128c7001cb0476aece7f57461312ec5de57d8cb756a7775fb5bdc25c14c9b823.exe	128c7001cb0476aece7f57461312ec5de57d8cb756a7775fb5bdc25c14c9b823.exe
PID 4996 wrote to memory of 1244	4996	128c7001cb0476aece7f57461312ec5de57d8cb756a7775fb5bdc25c14c9b823.exe	128c7001cb0476aece7f57461312ec5de57d8cb756a7775fb5bdc25c14c9b823.exe
PID 4996 wrote to memory of 1244	4996	128c7001cb0476aece7f57461312ec5de57d8cb756a7775fb5bdc25c14c9b823.exe	128c7001cb0476aece7f57461312ec5de57d8cb756a7775fb5bdc25c14c9b823.exe
PID 4996 wrote to memory of 1244	4996	128c7001cb0476aece7f57461312ec5de57d8cb756a7775fb5bdc25c14c9b823.exe	128c7001cb0476aece7f57461312ec5de57d8cb756a7775fb5bdc25c14c9b823.exe

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

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Downloads