djvu | 954bf47b858fbcbe354fea135f9d104e089edbc3c9c750588fde8a1e55076889

General

Target

954bf47b858fbcbe354fea135f9d104e089edbc3c9c750588fde8a1e55076889.exe
Size

749KB
MD5

2473e4881882b115f4af03a4e06768c5
SHA1

d4624ce03223ec6ec967f691e63d7b3c6cf67db6
SHA256

954bf47b858fbcbe354fea135f9d104e089edbc3c9c750588fde8a1e55076889
SHA512

ce0d1f365e56608f199ac96cae81a6f9f71f189acb257a6a3a07545a1ddc4d84ff0d7ebbb8ced3c7fe52b2e06c30f143d6d093c8a4b2fec34a5533ab86e9e328
SSDEEP

12288:WB9m/19iyezJJLhcD4SzYNkgnmNez53H9dADu819vYdDxvZdrNaMUVn0kF:WHmt96JlhY4Aa53Hy19AdDxTrN5Uz

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/4244-2-0x00000000048B0000-0x00000000049CB000-memory.dmp	family_djvu
behavioral1/memory/3692-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/3692-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/3692-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/3692-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/3692-12-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4884-15-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4884-16-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4884-17-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4884-19-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4884-18-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4884-20-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4884-24-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4884-27-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4884-26-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4884-28-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4884-29-0x0000000000400000-0x0000000000537000-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:

954bf47b858fbcbe354fea135f9d104e089edbc3c9c750588fde8a1e55076889.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-3726321484-1950364574-433157660-1000\Control Panel\International\Geo\Nation	954bf47b858fbcbe354fea135f9d104e089edbc3c9c750588fde8a1e55076889.exe

Modifies file permissions 1 TTPs 1 IoCs
discovery

File and Directory Permissions Modification
T1222

Processes:

icacls.exe

pid process

980 icacls.exe

pid	process
980	icacls.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

954bf47b858fbcbe354fea135f9d104e089edbc3c9c750588fde8a1e55076889.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-3726321484-1950364574-433157660-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\d2805e8d-d299-4c46-958a-77072ef76447\\954bf47b858fbcbe354fea135f9d104e089edbc3c9c750588fde8a1e55076889.exe\" --AutoStart"	954bf47b858fbcbe354fea135f9d104e089edbc3c9c750588fde8a1e55076889.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

3 api.2ip.ua
6 api.2ip.ua

flow	ioc
3	api.2ip.ua
6	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

Processes:

954bf47b858fbcbe354fea135f9d104e089edbc3c9c750588fde8a1e55076889.exe954bf47b858fbcbe354fea135f9d104e089edbc3c9c750588fde8a1e55076889.exe

description	pid	process	target process
PID 4244 set thread context of 3692	4244	954bf47b858fbcbe354fea135f9d104e089edbc3c9c750588fde8a1e55076889.exe	954bf47b858fbcbe354fea135f9d104e089edbc3c9c750588fde8a1e55076889.exe
PID 2988 set thread context of 4884	2988	954bf47b858fbcbe354fea135f9d104e089edbc3c9c750588fde8a1e55076889.exe	954bf47b858fbcbe354fea135f9d104e089edbc3c9c750588fde8a1e55076889.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:

954bf47b858fbcbe354fea135f9d104e089edbc3c9c750588fde8a1e55076889.exe954bf47b858fbcbe354fea135f9d104e089edbc3c9c750588fde8a1e55076889.exe

pid	process
3692	954bf47b858fbcbe354fea135f9d104e089edbc3c9c750588fde8a1e55076889.exe
3692	954bf47b858fbcbe354fea135f9d104e089edbc3c9c750588fde8a1e55076889.exe
4884	954bf47b858fbcbe354fea135f9d104e089edbc3c9c750588fde8a1e55076889.exe
4884	954bf47b858fbcbe354fea135f9d104e089edbc3c9c750588fde8a1e55076889.exe

Suspicious use of WriteProcessMemory 26 IoCs

Processes:

954bf47b858fbcbe354fea135f9d104e089edbc3c9c750588fde8a1e55076889.exe954bf47b858fbcbe354fea135f9d104e089edbc3c9c750588fde8a1e55076889.exe954bf47b858fbcbe354fea135f9d104e089edbc3c9c750588fde8a1e55076889.exe

C:\Users\Admin\AppData\Local\Temp\954bf47b858fbcbe354fea135f9d104e089edbc3c9c750588fde8a1e55076889.exe
"C:\Users\Admin\AppData\Local\Temp\954bf47b858fbcbe354fea135f9d104e089edbc3c9c750588fde8a1e55076889.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4244

C:\Users\Admin\AppData\Local\Temp\954bf47b858fbcbe354fea135f9d104e089edbc3c9c750588fde8a1e55076889.exe
"C:\Users\Admin\AppData\Local\Temp\954bf47b858fbcbe354fea135f9d104e089edbc3c9c750588fde8a1e55076889.exe"
2⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:3692

C:\Windows\SysWOW64\icacls.exe
icacls "C:\Users\Admin\AppData\Local\d2805e8d-d299-4c46-958a-77072ef76447" /deny *S-1-1-0:(OI)(CI)(DE,DC)
3⤵
- Modifies file permissions
PID:980

C:\Users\Admin\AppData\Local\Temp\954bf47b858fbcbe354fea135f9d104e089edbc3c9c750588fde8a1e55076889.exe
"C:\Users\Admin\AppData\Local\Temp\954bf47b858fbcbe354fea135f9d104e089edbc3c9c750588fde8a1e55076889.exe" --Admin IsNotAutoStart IsNotTask
3⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2988

C:\Users\Admin\AppData\Local\Temp\954bf47b858fbcbe354fea135f9d104e089edbc3c9c750588fde8a1e55076889.exe
"C:\Users\Admin\AppData\Local\Temp\954bf47b858fbcbe354fea135f9d104e089edbc3c9c750588fde8a1e55076889.exe" --Admin IsNotAutoStart IsNotTask
4⤵
- Suspicious behavior: EnumeratesProcesses
PID:4884

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

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Downloads

C:\Users\Admin\AppData\Local\d2805e8d-d299-4c46-958a-77072ef76447\954bf47b858fbcbe354fea135f9d104e089edbc3c9c750588fde8a1e55076889.exe

Filesize
749KB

MD5
2473e4881882b115f4af03a4e06768c5

SHA1
d4624ce03223ec6ec967f691e63d7b3c6cf67db6

SHA256
954bf47b858fbcbe354fea135f9d104e089edbc3c9c750588fde8a1e55076889

SHA512
ce0d1f365e56608f199ac96cae81a6f9f71f189acb257a6a3a07545a1ddc4d84ff0d7ebbb8ced3c7fe52b2e06c30f143d6d093c8a4b2fec34a5533ab86e9e328

Download Submit
memory/3692-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3692-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3692-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3692-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3692-12-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4244-1-0x0000000002F40000-0x0000000002FD5000-memory.dmp

Filesize
596KB

Download
memory/4244-2-0x00000000048B0000-0x00000000049CB000-memory.dmp

Filesize
1.1MB

Download
memory/4884-15-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4884-16-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4884-17-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4884-19-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4884-18-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4884-20-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4884-24-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4884-27-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4884-26-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4884-28-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4884-29-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download

description	pid	process	target process
PID 4244 wrote to memory of 3692	4244	954bf47b858fbcbe354fea135f9d104e089edbc3c9c750588fde8a1e55076889.exe	954bf47b858fbcbe354fea135f9d104e089edbc3c9c750588fde8a1e55076889.exe
PID 4244 wrote to memory of 3692	4244	954bf47b858fbcbe354fea135f9d104e089edbc3c9c750588fde8a1e55076889.exe	954bf47b858fbcbe354fea135f9d104e089edbc3c9c750588fde8a1e55076889.exe
PID 4244 wrote to memory of 3692	4244	954bf47b858fbcbe354fea135f9d104e089edbc3c9c750588fde8a1e55076889.exe	954bf47b858fbcbe354fea135f9d104e089edbc3c9c750588fde8a1e55076889.exe
PID 4244 wrote to memory of 3692	4244	954bf47b858fbcbe354fea135f9d104e089edbc3c9c750588fde8a1e55076889.exe	954bf47b858fbcbe354fea135f9d104e089edbc3c9c750588fde8a1e55076889.exe
PID 4244 wrote to memory of 3692	4244	954bf47b858fbcbe354fea135f9d104e089edbc3c9c750588fde8a1e55076889.exe	954bf47b858fbcbe354fea135f9d104e089edbc3c9c750588fde8a1e55076889.exe
PID 4244 wrote to memory of 3692	4244	954bf47b858fbcbe354fea135f9d104e089edbc3c9c750588fde8a1e55076889.exe	954bf47b858fbcbe354fea135f9d104e089edbc3c9c750588fde8a1e55076889.exe
PID 4244 wrote to memory of 3692	4244	954bf47b858fbcbe354fea135f9d104e089edbc3c9c750588fde8a1e55076889.exe	954bf47b858fbcbe354fea135f9d104e089edbc3c9c750588fde8a1e55076889.exe
PID 4244 wrote to memory of 3692	4244	954bf47b858fbcbe354fea135f9d104e089edbc3c9c750588fde8a1e55076889.exe	954bf47b858fbcbe354fea135f9d104e089edbc3c9c750588fde8a1e55076889.exe
PID 4244 wrote to memory of 3692	4244	954bf47b858fbcbe354fea135f9d104e089edbc3c9c750588fde8a1e55076889.exe	954bf47b858fbcbe354fea135f9d104e089edbc3c9c750588fde8a1e55076889.exe
PID 4244 wrote to memory of 3692	4244	954bf47b858fbcbe354fea135f9d104e089edbc3c9c750588fde8a1e55076889.exe	954bf47b858fbcbe354fea135f9d104e089edbc3c9c750588fde8a1e55076889.exe
PID 3692 wrote to memory of 980	3692	954bf47b858fbcbe354fea135f9d104e089edbc3c9c750588fde8a1e55076889.exe	icacls.exe
PID 3692 wrote to memory of 980	3692	954bf47b858fbcbe354fea135f9d104e089edbc3c9c750588fde8a1e55076889.exe	icacls.exe
PID 3692 wrote to memory of 980	3692	954bf47b858fbcbe354fea135f9d104e089edbc3c9c750588fde8a1e55076889.exe	icacls.exe
PID 3692 wrote to memory of 2988	3692	954bf47b858fbcbe354fea135f9d104e089edbc3c9c750588fde8a1e55076889.exe	954bf47b858fbcbe354fea135f9d104e089edbc3c9c750588fde8a1e55076889.exe
PID 3692 wrote to memory of 2988	3692	954bf47b858fbcbe354fea135f9d104e089edbc3c9c750588fde8a1e55076889.exe	954bf47b858fbcbe354fea135f9d104e089edbc3c9c750588fde8a1e55076889.exe
PID 3692 wrote to memory of 2988	3692	954bf47b858fbcbe354fea135f9d104e089edbc3c9c750588fde8a1e55076889.exe	954bf47b858fbcbe354fea135f9d104e089edbc3c9c750588fde8a1e55076889.exe
PID 2988 wrote to memory of 4884	2988	954bf47b858fbcbe354fea135f9d104e089edbc3c9c750588fde8a1e55076889.exe	954bf47b858fbcbe354fea135f9d104e089edbc3c9c750588fde8a1e55076889.exe
PID 2988 wrote to memory of 4884	2988	954bf47b858fbcbe354fea135f9d104e089edbc3c9c750588fde8a1e55076889.exe	954bf47b858fbcbe354fea135f9d104e089edbc3c9c750588fde8a1e55076889.exe
PID 2988 wrote to memory of 4884	2988	954bf47b858fbcbe354fea135f9d104e089edbc3c9c750588fde8a1e55076889.exe	954bf47b858fbcbe354fea135f9d104e089edbc3c9c750588fde8a1e55076889.exe
PID 2988 wrote to memory of 4884	2988	954bf47b858fbcbe354fea135f9d104e089edbc3c9c750588fde8a1e55076889.exe	954bf47b858fbcbe354fea135f9d104e089edbc3c9c750588fde8a1e55076889.exe
PID 2988 wrote to memory of 4884	2988	954bf47b858fbcbe354fea135f9d104e089edbc3c9c750588fde8a1e55076889.exe	954bf47b858fbcbe354fea135f9d104e089edbc3c9c750588fde8a1e55076889.exe
PID 2988 wrote to memory of 4884	2988	954bf47b858fbcbe354fea135f9d104e089edbc3c9c750588fde8a1e55076889.exe	954bf47b858fbcbe354fea135f9d104e089edbc3c9c750588fde8a1e55076889.exe
PID 2988 wrote to memory of 4884	2988	954bf47b858fbcbe354fea135f9d104e089edbc3c9c750588fde8a1e55076889.exe	954bf47b858fbcbe354fea135f9d104e089edbc3c9c750588fde8a1e55076889.exe
PID 2988 wrote to memory of 4884	2988	954bf47b858fbcbe354fea135f9d104e089edbc3c9c750588fde8a1e55076889.exe	954bf47b858fbcbe354fea135f9d104e089edbc3c9c750588fde8a1e55076889.exe
PID 2988 wrote to memory of 4884	2988	954bf47b858fbcbe354fea135f9d104e089edbc3c9c750588fde8a1e55076889.exe	954bf47b858fbcbe354fea135f9d104e089edbc3c9c750588fde8a1e55076889.exe
PID 2988 wrote to memory of 4884	2988	954bf47b858fbcbe354fea135f9d104e089edbc3c9c750588fde8a1e55076889.exe	954bf47b858fbcbe354fea135f9d104e089edbc3c9c750588fde8a1e55076889.exe

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads