djvu | 5813583d3199620c8d84ff421d4e194ce7d071d20c6e9415d5e5a497f43f81fc

General

Target

5813583d3199620c8d84ff421d4e194ce7d071d20c6e9415d5e5a497f43f81fc.exe
Size

807KB
MD5

399bb1e98a2ada417527f09080839484
SHA1

3d460c78d4bcf996b40ebc6deab57aa2027065f3
SHA256

5813583d3199620c8d84ff421d4e194ce7d071d20c6e9415d5e5a497f43f81fc
SHA512

b0727a92616b9cf7b3e9e7352216c78285371d716d2d269d6cabe6648e0aa03bf5a51899635892cd4966aa7d4da2b28862aaba71d45745a5ed384e8aaa87d875
SSDEEP

12288:SIYr4sorDGk8GwzeZcs94Swf4L3Dj0/ykitHd6hhEMiJlp:nYr4sVkHiWnIAtHkhEMiB

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

C2

http://cajgtus.com/test1/get.php

Attributes

extension
.vepi
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/2668-2-0x0000000003D20000-0x0000000003E3B000-memory.dmp	family_djvu
behavioral1/memory/5112-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/5112-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/5112-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/5112-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/5112-19-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/3308-22-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/3308-28-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/3308-29-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/3308-30-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/3308-33-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/3308-35-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/3308-36-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/8-37-0x0000000000400000-0x0000000002015000-memory.dmp	family_djvu
behavioral1/memory/3308-38-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/3308-39-0x0000000000400000-0x0000000000537000-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:

5813583d3199620c8d84ff421d4e194ce7d071d20c6e9415d5e5a497f43f81fc.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-4018855536-2201274732-320770143-1000\Control Panel\International\Geo\Nation	5813583d3199620c8d84ff421d4e194ce7d071d20c6e9415d5e5a497f43f81fc.exe

Modifies file permissions 1 TTPs 1 IoCs
discovery

File and Directory Permissions Modification
T1222

Processes:

icacls.exe

pid process

1180 icacls.exe

pid	process
1180	icacls.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

5813583d3199620c8d84ff421d4e194ce7d071d20c6e9415d5e5a497f43f81fc.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-4018855536-2201274732-320770143-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\30b36a1f-e96f-41de-879f-605784615df8\\5813583d3199620c8d84ff421d4e194ce7d071d20c6e9415d5e5a497f43f81fc.exe\" --AutoStart"	5813583d3199620c8d84ff421d4e194ce7d071d20c6e9415d5e5a497f43f81fc.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

4 api.2ip.ua
5 api.2ip.ua
17 api.2ip.ua

flow	ioc
4	api.2ip.ua
5	api.2ip.ua
17	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

Processes:

5813583d3199620c8d84ff421d4e194ce7d071d20c6e9415d5e5a497f43f81fc.exe5813583d3199620c8d84ff421d4e194ce7d071d20c6e9415d5e5a497f43f81fc.exe

description	pid	process	target process
PID 2668 set thread context of 5112	2668	5813583d3199620c8d84ff421d4e194ce7d071d20c6e9415d5e5a497f43f81fc.exe	5813583d3199620c8d84ff421d4e194ce7d071d20c6e9415d5e5a497f43f81fc.exe
PID 8 set thread context of 3308	8	5813583d3199620c8d84ff421d4e194ce7d071d20c6e9415d5e5a497f43f81fc.exe	5813583d3199620c8d84ff421d4e194ce7d071d20c6e9415d5e5a497f43f81fc.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:

5813583d3199620c8d84ff421d4e194ce7d071d20c6e9415d5e5a497f43f81fc.exe5813583d3199620c8d84ff421d4e194ce7d071d20c6e9415d5e5a497f43f81fc.exe

pid	process
5112	5813583d3199620c8d84ff421d4e194ce7d071d20c6e9415d5e5a497f43f81fc.exe
5112	5813583d3199620c8d84ff421d4e194ce7d071d20c6e9415d5e5a497f43f81fc.exe
3308	5813583d3199620c8d84ff421d4e194ce7d071d20c6e9415d5e5a497f43f81fc.exe
3308	5813583d3199620c8d84ff421d4e194ce7d071d20c6e9415d5e5a497f43f81fc.exe

Suspicious use of WriteProcessMemory 26 IoCs

Processes:

5813583d3199620c8d84ff421d4e194ce7d071d20c6e9415d5e5a497f43f81fc.exe5813583d3199620c8d84ff421d4e194ce7d071d20c6e9415d5e5a497f43f81fc.exe5813583d3199620c8d84ff421d4e194ce7d071d20c6e9415d5e5a497f43f81fc.exe

C:\Users\Admin\AppData\Local\Temp\5813583d3199620c8d84ff421d4e194ce7d071d20c6e9415d5e5a497f43f81fc.exe
"C:\Users\Admin\AppData\Local\Temp\5813583d3199620c8d84ff421d4e194ce7d071d20c6e9415d5e5a497f43f81fc.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2668

C:\Users\Admin\AppData\Local\Temp\5813583d3199620c8d84ff421d4e194ce7d071d20c6e9415d5e5a497f43f81fc.exe
"C:\Users\Admin\AppData\Local\Temp\5813583d3199620c8d84ff421d4e194ce7d071d20c6e9415d5e5a497f43f81fc.exe"
2⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:5112

C:\Windows\SysWOW64\icacls.exe
icacls "C:\Users\Admin\AppData\Local\30b36a1f-e96f-41de-879f-605784615df8" /deny *S-1-1-0:(OI)(CI)(DE,DC)
3⤵
- Modifies file permissions
PID:1180

C:\Users\Admin\AppData\Local\Temp\5813583d3199620c8d84ff421d4e194ce7d071d20c6e9415d5e5a497f43f81fc.exe
"C:\Users\Admin\AppData\Local\Temp\5813583d3199620c8d84ff421d4e194ce7d071d20c6e9415d5e5a497f43f81fc.exe" --Admin IsNotAutoStart IsNotTask
3⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:8

C:\Users\Admin\AppData\Local\Temp\5813583d3199620c8d84ff421d4e194ce7d071d20c6e9415d5e5a497f43f81fc.exe
"C:\Users\Admin\AppData\Local\Temp\5813583d3199620c8d84ff421d4e194ce7d071d20c6e9415d5e5a497f43f81fc.exe" --Admin IsNotAutoStart IsNotTask
4⤵
- Suspicious behavior: EnumeratesProcesses
PID:3308

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
7575c39a544943a68ce6e709c586005a

SHA1
4874b30bd1d455b28a95c4e21c5aecd1ea043d7a

SHA256
4737de49245ace1ca1fdeaacd5feee9bbda88bc6f42c84a1ea7d316383792cf8

SHA512
abf3d85393725113e720cbe8980b369236511e3984e8cbfa795f19bb5d6e39822e80a835caeb498581797a74b349765ba1a27f26586a17a66ae1c88bd066a3d1

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
032fab8d5d73b9385facfaa339dcc649

SHA1
0c988932f173a4082b6295e6d1491d81c37bc8de

SHA256
843be824fb71277ba3273bcc15a5125701fa3000ae72074d8427388a1316db1e

SHA512
619126b886ce43fa3a40e9d19fda212f7b7b0318d5ad4975ced520466be96e5b20b4774e43be49659a07734aa31a5d2cf343611de610d774085a8c3300c47ac2

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

MD5
cce96f9552cd9995e98fe862bcf2f0da

SHA1
80b0234967ae89814cb92c8d8e4ec0b6b6880153

SHA256
74e2c0cbc71266eca500f7139db37450ac7365160b02fdfbb5a9e112051b41eb

SHA512
76492864b71b74b1e45ac1b67c18d2a64b78e88d10c0416accdd29f63a37cb75e39db9b3781471b59089b73b0366476ec135fb87dea534801eab6432b211da1c

Download Submit
C:\Users\Admin\AppData\Local\30b36a1f-e96f-41de-879f-605784615df8\5813583d3199620c8d84ff421d4e194ce7d071d20c6e9415d5e5a497f43f81fc.exe
Filesize
807KB

MD5
399bb1e98a2ada417527f09080839484

SHA1
3d460c78d4bcf996b40ebc6deab57aa2027065f3

SHA256
5813583d3199620c8d84ff421d4e194ce7d071d20c6e9415d5e5a497f43f81fc

SHA512
b0727a92616b9cf7b3e9e7352216c78285371d716d2d269d6cabe6648e0aa03bf5a51899635892cd4966aa7d4da2b28862aaba71d45745a5ed384e8aaa87d875

Download Submit
memory/8-23-0x0000000000400000-0x0000000002015000-memory.dmp

Filesize
28.1MB

Download
memory/8-37-0x0000000000400000-0x0000000002015000-memory.dmp

Filesize
28.1MB

Download
memory/2668-2-0x0000000003D20000-0x0000000003E3B000-memory.dmp

Filesize
1.1MB

Download
memory/2668-1-0x0000000002130000-0x00000000021D0000-memory.dmp

Filesize
640KB

Download
memory/3308-29-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3308-36-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3308-39-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3308-38-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3308-22-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3308-28-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3308-35-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3308-30-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3308-33-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/5112-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/5112-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/5112-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/5112-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/5112-19-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download

description	pid	process	target process
PID 2668 wrote to memory of 5112	2668	5813583d3199620c8d84ff421d4e194ce7d071d20c6e9415d5e5a497f43f81fc.exe	5813583d3199620c8d84ff421d4e194ce7d071d20c6e9415d5e5a497f43f81fc.exe
PID 2668 wrote to memory of 5112	2668	5813583d3199620c8d84ff421d4e194ce7d071d20c6e9415d5e5a497f43f81fc.exe	5813583d3199620c8d84ff421d4e194ce7d071d20c6e9415d5e5a497f43f81fc.exe
PID 2668 wrote to memory of 5112	2668	5813583d3199620c8d84ff421d4e194ce7d071d20c6e9415d5e5a497f43f81fc.exe	5813583d3199620c8d84ff421d4e194ce7d071d20c6e9415d5e5a497f43f81fc.exe
PID 2668 wrote to memory of 5112	2668	5813583d3199620c8d84ff421d4e194ce7d071d20c6e9415d5e5a497f43f81fc.exe	5813583d3199620c8d84ff421d4e194ce7d071d20c6e9415d5e5a497f43f81fc.exe
PID 2668 wrote to memory of 5112	2668	5813583d3199620c8d84ff421d4e194ce7d071d20c6e9415d5e5a497f43f81fc.exe	5813583d3199620c8d84ff421d4e194ce7d071d20c6e9415d5e5a497f43f81fc.exe
PID 2668 wrote to memory of 5112	2668	5813583d3199620c8d84ff421d4e194ce7d071d20c6e9415d5e5a497f43f81fc.exe	5813583d3199620c8d84ff421d4e194ce7d071d20c6e9415d5e5a497f43f81fc.exe
PID 2668 wrote to memory of 5112	2668	5813583d3199620c8d84ff421d4e194ce7d071d20c6e9415d5e5a497f43f81fc.exe	5813583d3199620c8d84ff421d4e194ce7d071d20c6e9415d5e5a497f43f81fc.exe
PID 2668 wrote to memory of 5112	2668	5813583d3199620c8d84ff421d4e194ce7d071d20c6e9415d5e5a497f43f81fc.exe	5813583d3199620c8d84ff421d4e194ce7d071d20c6e9415d5e5a497f43f81fc.exe
PID 2668 wrote to memory of 5112	2668	5813583d3199620c8d84ff421d4e194ce7d071d20c6e9415d5e5a497f43f81fc.exe	5813583d3199620c8d84ff421d4e194ce7d071d20c6e9415d5e5a497f43f81fc.exe
PID 2668 wrote to memory of 5112	2668	5813583d3199620c8d84ff421d4e194ce7d071d20c6e9415d5e5a497f43f81fc.exe	5813583d3199620c8d84ff421d4e194ce7d071d20c6e9415d5e5a497f43f81fc.exe
PID 5112 wrote to memory of 1180	5112	5813583d3199620c8d84ff421d4e194ce7d071d20c6e9415d5e5a497f43f81fc.exe	icacls.exe
PID 5112 wrote to memory of 1180	5112	5813583d3199620c8d84ff421d4e194ce7d071d20c6e9415d5e5a497f43f81fc.exe	icacls.exe
PID 5112 wrote to memory of 1180	5112	5813583d3199620c8d84ff421d4e194ce7d071d20c6e9415d5e5a497f43f81fc.exe	icacls.exe
PID 5112 wrote to memory of 8	5112	5813583d3199620c8d84ff421d4e194ce7d071d20c6e9415d5e5a497f43f81fc.exe	5813583d3199620c8d84ff421d4e194ce7d071d20c6e9415d5e5a497f43f81fc.exe
PID 5112 wrote to memory of 8	5112	5813583d3199620c8d84ff421d4e194ce7d071d20c6e9415d5e5a497f43f81fc.exe	5813583d3199620c8d84ff421d4e194ce7d071d20c6e9415d5e5a497f43f81fc.exe
PID 5112 wrote to memory of 8	5112	5813583d3199620c8d84ff421d4e194ce7d071d20c6e9415d5e5a497f43f81fc.exe	5813583d3199620c8d84ff421d4e194ce7d071d20c6e9415d5e5a497f43f81fc.exe
PID 8 wrote to memory of 3308	8	5813583d3199620c8d84ff421d4e194ce7d071d20c6e9415d5e5a497f43f81fc.exe	5813583d3199620c8d84ff421d4e194ce7d071d20c6e9415d5e5a497f43f81fc.exe
PID 8 wrote to memory of 3308	8	5813583d3199620c8d84ff421d4e194ce7d071d20c6e9415d5e5a497f43f81fc.exe	5813583d3199620c8d84ff421d4e194ce7d071d20c6e9415d5e5a497f43f81fc.exe
PID 8 wrote to memory of 3308	8	5813583d3199620c8d84ff421d4e194ce7d071d20c6e9415d5e5a497f43f81fc.exe	5813583d3199620c8d84ff421d4e194ce7d071d20c6e9415d5e5a497f43f81fc.exe
PID 8 wrote to memory of 3308	8	5813583d3199620c8d84ff421d4e194ce7d071d20c6e9415d5e5a497f43f81fc.exe	5813583d3199620c8d84ff421d4e194ce7d071d20c6e9415d5e5a497f43f81fc.exe
PID 8 wrote to memory of 3308	8	5813583d3199620c8d84ff421d4e194ce7d071d20c6e9415d5e5a497f43f81fc.exe	5813583d3199620c8d84ff421d4e194ce7d071d20c6e9415d5e5a497f43f81fc.exe
PID 8 wrote to memory of 3308	8	5813583d3199620c8d84ff421d4e194ce7d071d20c6e9415d5e5a497f43f81fc.exe	5813583d3199620c8d84ff421d4e194ce7d071d20c6e9415d5e5a497f43f81fc.exe
PID 8 wrote to memory of 3308	8	5813583d3199620c8d84ff421d4e194ce7d071d20c6e9415d5e5a497f43f81fc.exe	5813583d3199620c8d84ff421d4e194ce7d071d20c6e9415d5e5a497f43f81fc.exe
PID 8 wrote to memory of 3308	8	5813583d3199620c8d84ff421d4e194ce7d071d20c6e9415d5e5a497f43f81fc.exe	5813583d3199620c8d84ff421d4e194ce7d071d20c6e9415d5e5a497f43f81fc.exe
PID 8 wrote to memory of 3308	8	5813583d3199620c8d84ff421d4e194ce7d071d20c6e9415d5e5a497f43f81fc.exe	5813583d3199620c8d84ff421d4e194ce7d071d20c6e9415d5e5a497f43f81fc.exe
PID 8 wrote to memory of 3308	8	5813583d3199620c8d84ff421d4e194ce7d071d20c6e9415d5e5a497f43f81fc.exe	5813583d3199620c8d84ff421d4e194ce7d071d20c6e9415d5e5a497f43f81fc.exe

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

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Downloads