djvu | 9073d8ad686d22722cbbff01830b1dd6edfc741e6aa284a9f2515baefcc010bf

General

Target

9073d8ad686d22722cbbff01830b1dd6edfc741e6aa284a9f2515baefcc010bf.exe
Size

771KB
MD5

31cffaa94c15c0d026dfff8e8392e9fa
SHA1

19b2797106e50009acfe14568017e6ed68d3eafc
SHA256

9073d8ad686d22722cbbff01830b1dd6edfc741e6aa284a9f2515baefcc010bf
SHA512

594152cd32cd86f7d262cd1ac32710c1076fc5a115728d2259a5b2c1f2a05954de116ff26d8eedc0632c4cf1c4574bedc55acb2c2ddd420d85a5adac3aec596b
SSDEEP

24576:mdnic41E6OBLdKf3R3GIc4Tzf9npTmR3D:Ik1osRb/nfZpTw

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

C2

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

Attributes

extension
.vehu
offline_id
EGfa5svnSGFJka7LZBQoqff0QtO1IpTauoDvGvt1
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 16 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2620-2-0x0000000003D70000-0x0000000003E8B000-memory.dmp	family_djvu
behavioral1/memory/1052-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1052-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1052-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1052-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1052-21-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/5628-25-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/5628-23-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/5628-32-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/5628-31-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/5628-33-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/5628-37-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/5628-39-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/5628-40-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/5628-41-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/5628-43-0x0000000000400000-0x0000000000537000-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:

9073d8ad686d22722cbbff01830b1dd6edfc741e6aa284a9f2515baefcc010bf.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation	9073d8ad686d22722cbbff01830b1dd6edfc741e6aa284a9f2515baefcc010bf.exe

Modifies file permissions 1 TTPs 1 IoCs
discovery

File and Directory Permissions Modification
T1222

Processes:

icacls.exe

pid process

2228 icacls.exe

pid	process
2228	icacls.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

9073d8ad686d22722cbbff01830b1dd6edfc741e6aa284a9f2515baefcc010bf.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\7dadf4fc-6579-4716-8713-066d6eb66b42\\9073d8ad686d22722cbbff01830b1dd6edfc741e6aa284a9f2515baefcc010bf.exe\" --AutoStart"	9073d8ad686d22722cbbff01830b1dd6edfc741e6aa284a9f2515baefcc010bf.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

3 api.2ip.ua
7 api.2ip.ua
18 api.2ip.ua

flow	ioc
3	api.2ip.ua
7	api.2ip.ua
18	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

Processes:

9073d8ad686d22722cbbff01830b1dd6edfc741e6aa284a9f2515baefcc010bf.exe9073d8ad686d22722cbbff01830b1dd6edfc741e6aa284a9f2515baefcc010bf.exe

description	pid	process	target process
PID 2620 set thread context of 1052	2620	9073d8ad686d22722cbbff01830b1dd6edfc741e6aa284a9f2515baefcc010bf.exe	9073d8ad686d22722cbbff01830b1dd6edfc741e6aa284a9f2515baefcc010bf.exe
PID 5616 set thread context of 5628	5616	9073d8ad686d22722cbbff01830b1dd6edfc741e6aa284a9f2515baefcc010bf.exe	9073d8ad686d22722cbbff01830b1dd6edfc741e6aa284a9f2515baefcc010bf.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:

9073d8ad686d22722cbbff01830b1dd6edfc741e6aa284a9f2515baefcc010bf.exe9073d8ad686d22722cbbff01830b1dd6edfc741e6aa284a9f2515baefcc010bf.exe

pid	process
1052	9073d8ad686d22722cbbff01830b1dd6edfc741e6aa284a9f2515baefcc010bf.exe
1052	9073d8ad686d22722cbbff01830b1dd6edfc741e6aa284a9f2515baefcc010bf.exe
5628	9073d8ad686d22722cbbff01830b1dd6edfc741e6aa284a9f2515baefcc010bf.exe
5628	9073d8ad686d22722cbbff01830b1dd6edfc741e6aa284a9f2515baefcc010bf.exe

Suspicious use of WriteProcessMemory 26 IoCs

Processes:

9073d8ad686d22722cbbff01830b1dd6edfc741e6aa284a9f2515baefcc010bf.exe9073d8ad686d22722cbbff01830b1dd6edfc741e6aa284a9f2515baefcc010bf.exe9073d8ad686d22722cbbff01830b1dd6edfc741e6aa284a9f2515baefcc010bf.exe

C:\Users\Admin\AppData\Local\Temp\9073d8ad686d22722cbbff01830b1dd6edfc741e6aa284a9f2515baefcc010bf.exe
"C:\Users\Admin\AppData\Local\Temp\9073d8ad686d22722cbbff01830b1dd6edfc741e6aa284a9f2515baefcc010bf.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2620

C:\Users\Admin\AppData\Local\Temp\9073d8ad686d22722cbbff01830b1dd6edfc741e6aa284a9f2515baefcc010bf.exe
"C:\Users\Admin\AppData\Local\Temp\9073d8ad686d22722cbbff01830b1dd6edfc741e6aa284a9f2515baefcc010bf.exe"
2⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:1052

C:\Windows\SysWOW64\icacls.exe
icacls "C:\Users\Admin\AppData\Local\7dadf4fc-6579-4716-8713-066d6eb66b42" /deny *S-1-1-0:(OI)(CI)(DE,DC)
3⤵
- Modifies file permissions
PID:2228

C:\Users\Admin\AppData\Local\Temp\9073d8ad686d22722cbbff01830b1dd6edfc741e6aa284a9f2515baefcc010bf.exe
"C:\Users\Admin\AppData\Local\Temp\9073d8ad686d22722cbbff01830b1dd6edfc741e6aa284a9f2515baefcc010bf.exe" --Admin IsNotAutoStart IsNotTask
3⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:5616

C:\Users\Admin\AppData\Local\Temp\9073d8ad686d22722cbbff01830b1dd6edfc741e6aa284a9f2515baefcc010bf.exe
"C:\Users\Admin\AppData\Local\Temp\9073d8ad686d22722cbbff01830b1dd6edfc741e6aa284a9f2515baefcc010bf.exe" --Admin IsNotAutoStart IsNotTask
4⤵
- Suspicious behavior: EnumeratesProcesses
PID:5628

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=3996 --field-trial-handle=2280,i,1836084024518340990,18250262151825427757,262144 --variations-seed-version /prefetch:8
1⤵
PID:5808

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

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

Modify Registry

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

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

MD5
9e130b50184e39e32205c9dd3befee15

SHA1
150b8bfb3208d3a854996e02c1470d81530335b5

SHA256
7b5bd8bc8ac2cd655c212c4790e5d9a259046730a9f0bb51616b036da55d2c50

SHA512
3cf76690e692c874792fa99d6358ebdd3596bab33bede653067375fc7de617eb7f150f52e640d34b2d51dcbe39c5bb88381bdc0279054ab65d5f1492d89f648f

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
221964ab4083fea53edcd12798d9d472

SHA1
abd7527c8249a2a249d361917ed08a1432019b78

SHA256
dce9ffe1cd06449821372192e895dd21cb4b434ececb7162b50c325f67baf559

SHA512
578ba34c7283f38db74f04c03312573769f8b90b3f6e4146f29ed9ad7439d2f47df419ec47eba6331262b38011024038f257e7b9c0ca125ec9926dfbfac50481

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

MD5
d93bef576f7301c0157add455084c0f4

SHA1
6d1f2338e79ce7e5daa2edb88f0e50b3611fc4df

SHA256
814ce744d5fb00d819dbe56555561c8f36e6c7904e7fec0ba8582563f530b45f

SHA512
cbc1b63ac95f9b3b288a5fbb634459cd1823e78b5615ae037ebc8da444d14ee30f753b81ba2eb6a9b2c5cb388dae8da109b63b006882a6c72cc107021f1a2be3

Download Submit
C:\Users\Admin\AppData\Local\7dadf4fc-6579-4716-8713-066d6eb66b42\9073d8ad686d22722cbbff01830b1dd6edfc741e6aa284a9f2515baefcc010bf.exe
Filesize
771KB

MD5
31cffaa94c15c0d026dfff8e8392e9fa

SHA1
19b2797106e50009acfe14568017e6ed68d3eafc

SHA256
9073d8ad686d22722cbbff01830b1dd6edfc741e6aa284a9f2515baefcc010bf

SHA512
594152cd32cd86f7d262cd1ac32710c1076fc5a115728d2259a5b2c1f2a05954de116ff26d8eedc0632c4cf1c4574bedc55acb2c2ddd420d85a5adac3aec596b

Download Submit
memory/1052-21-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1052-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1052-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1052-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1052-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2620-1-0x0000000002100000-0x000000000219A000-memory.dmp

Filesize
616KB

Download
memory/2620-2-0x0000000003D70000-0x0000000003E8B000-memory.dmp

Filesize
1.1MB

Download
memory/5616-36-0x0000000000400000-0x000000000200C000-memory.dmp

Filesize
28.0MB

Download
memory/5616-26-0x0000000000400000-0x000000000200C000-memory.dmp

Filesize
28.0MB

Download
memory/5628-23-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/5628-32-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/5628-31-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/5628-33-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/5628-25-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/5628-37-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/5628-39-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/5628-40-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/5628-41-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/5628-43-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download

description	pid	process	target process
PID 2620 wrote to memory of 1052	2620	9073d8ad686d22722cbbff01830b1dd6edfc741e6aa284a9f2515baefcc010bf.exe	9073d8ad686d22722cbbff01830b1dd6edfc741e6aa284a9f2515baefcc010bf.exe
PID 2620 wrote to memory of 1052	2620	9073d8ad686d22722cbbff01830b1dd6edfc741e6aa284a9f2515baefcc010bf.exe	9073d8ad686d22722cbbff01830b1dd6edfc741e6aa284a9f2515baefcc010bf.exe
PID 2620 wrote to memory of 1052	2620	9073d8ad686d22722cbbff01830b1dd6edfc741e6aa284a9f2515baefcc010bf.exe	9073d8ad686d22722cbbff01830b1dd6edfc741e6aa284a9f2515baefcc010bf.exe
PID 2620 wrote to memory of 1052	2620	9073d8ad686d22722cbbff01830b1dd6edfc741e6aa284a9f2515baefcc010bf.exe	9073d8ad686d22722cbbff01830b1dd6edfc741e6aa284a9f2515baefcc010bf.exe
PID 2620 wrote to memory of 1052	2620	9073d8ad686d22722cbbff01830b1dd6edfc741e6aa284a9f2515baefcc010bf.exe	9073d8ad686d22722cbbff01830b1dd6edfc741e6aa284a9f2515baefcc010bf.exe
PID 2620 wrote to memory of 1052	2620	9073d8ad686d22722cbbff01830b1dd6edfc741e6aa284a9f2515baefcc010bf.exe	9073d8ad686d22722cbbff01830b1dd6edfc741e6aa284a9f2515baefcc010bf.exe
PID 2620 wrote to memory of 1052	2620	9073d8ad686d22722cbbff01830b1dd6edfc741e6aa284a9f2515baefcc010bf.exe	9073d8ad686d22722cbbff01830b1dd6edfc741e6aa284a9f2515baefcc010bf.exe
PID 2620 wrote to memory of 1052	2620	9073d8ad686d22722cbbff01830b1dd6edfc741e6aa284a9f2515baefcc010bf.exe	9073d8ad686d22722cbbff01830b1dd6edfc741e6aa284a9f2515baefcc010bf.exe
PID 2620 wrote to memory of 1052	2620	9073d8ad686d22722cbbff01830b1dd6edfc741e6aa284a9f2515baefcc010bf.exe	9073d8ad686d22722cbbff01830b1dd6edfc741e6aa284a9f2515baefcc010bf.exe
PID 2620 wrote to memory of 1052	2620	9073d8ad686d22722cbbff01830b1dd6edfc741e6aa284a9f2515baefcc010bf.exe	9073d8ad686d22722cbbff01830b1dd6edfc741e6aa284a9f2515baefcc010bf.exe
PID 1052 wrote to memory of 2228	1052	9073d8ad686d22722cbbff01830b1dd6edfc741e6aa284a9f2515baefcc010bf.exe	icacls.exe
PID 1052 wrote to memory of 2228	1052	9073d8ad686d22722cbbff01830b1dd6edfc741e6aa284a9f2515baefcc010bf.exe	icacls.exe
PID 1052 wrote to memory of 2228	1052	9073d8ad686d22722cbbff01830b1dd6edfc741e6aa284a9f2515baefcc010bf.exe	icacls.exe
PID 1052 wrote to memory of 5616	1052	9073d8ad686d22722cbbff01830b1dd6edfc741e6aa284a9f2515baefcc010bf.exe	9073d8ad686d22722cbbff01830b1dd6edfc741e6aa284a9f2515baefcc010bf.exe
PID 1052 wrote to memory of 5616	1052	9073d8ad686d22722cbbff01830b1dd6edfc741e6aa284a9f2515baefcc010bf.exe	9073d8ad686d22722cbbff01830b1dd6edfc741e6aa284a9f2515baefcc010bf.exe
PID 1052 wrote to memory of 5616	1052	9073d8ad686d22722cbbff01830b1dd6edfc741e6aa284a9f2515baefcc010bf.exe	9073d8ad686d22722cbbff01830b1dd6edfc741e6aa284a9f2515baefcc010bf.exe
PID 5616 wrote to memory of 5628	5616	9073d8ad686d22722cbbff01830b1dd6edfc741e6aa284a9f2515baefcc010bf.exe	9073d8ad686d22722cbbff01830b1dd6edfc741e6aa284a9f2515baefcc010bf.exe
PID 5616 wrote to memory of 5628	5616	9073d8ad686d22722cbbff01830b1dd6edfc741e6aa284a9f2515baefcc010bf.exe	9073d8ad686d22722cbbff01830b1dd6edfc741e6aa284a9f2515baefcc010bf.exe
PID 5616 wrote to memory of 5628	5616	9073d8ad686d22722cbbff01830b1dd6edfc741e6aa284a9f2515baefcc010bf.exe	9073d8ad686d22722cbbff01830b1dd6edfc741e6aa284a9f2515baefcc010bf.exe
PID 5616 wrote to memory of 5628	5616	9073d8ad686d22722cbbff01830b1dd6edfc741e6aa284a9f2515baefcc010bf.exe	9073d8ad686d22722cbbff01830b1dd6edfc741e6aa284a9f2515baefcc010bf.exe
PID 5616 wrote to memory of 5628	5616	9073d8ad686d22722cbbff01830b1dd6edfc741e6aa284a9f2515baefcc010bf.exe	9073d8ad686d22722cbbff01830b1dd6edfc741e6aa284a9f2515baefcc010bf.exe
PID 5616 wrote to memory of 5628	5616	9073d8ad686d22722cbbff01830b1dd6edfc741e6aa284a9f2515baefcc010bf.exe	9073d8ad686d22722cbbff01830b1dd6edfc741e6aa284a9f2515baefcc010bf.exe
PID 5616 wrote to memory of 5628	5616	9073d8ad686d22722cbbff01830b1dd6edfc741e6aa284a9f2515baefcc010bf.exe	9073d8ad686d22722cbbff01830b1dd6edfc741e6aa284a9f2515baefcc010bf.exe
PID 5616 wrote to memory of 5628	5616	9073d8ad686d22722cbbff01830b1dd6edfc741e6aa284a9f2515baefcc010bf.exe	9073d8ad686d22722cbbff01830b1dd6edfc741e6aa284a9f2515baefcc010bf.exe
PID 5616 wrote to memory of 5628	5616	9073d8ad686d22722cbbff01830b1dd6edfc741e6aa284a9f2515baefcc010bf.exe	9073d8ad686d22722cbbff01830b1dd6edfc741e6aa284a9f2515baefcc010bf.exe
PID 5616 wrote to memory of 5628	5616	9073d8ad686d22722cbbff01830b1dd6edfc741e6aa284a9f2515baefcc010bf.exe	9073d8ad686d22722cbbff01830b1dd6edfc741e6aa284a9f2515baefcc010bf.exe

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads