djvu | d63381aa21d304bf09bc7f9ef703d395ba3212fe7b694440f63f7d5b9e7b67e0

General

Target

d63381aa21d304bf09bc7f9ef703d395ba3212fe7b694440f63f7d5b9e7b67e0.exe
Size

741KB
MD5

0f9eb2d254e8990f6afbcfb3a8d99ce8
SHA1

a0183d3f76abb8fa1468b59354674526de31b13e
SHA256

d63381aa21d304bf09bc7f9ef703d395ba3212fe7b694440f63f7d5b9e7b67e0
SHA512

8d3dcbd248c072f78248fee9177911ed2d1b7cd439ccf1cd8f5f77f67ea87fa16d715cc5cc35ca933e5c8cf09609658889cff7227ac1f17d580b832ed1628c35
SSDEEP

12288:gaw/wJ0ACIrKBNsMISaTLaWIQ68CvMz7I8OvSTe7:1w/wJ0Afrks5SbWIQ3CvMfTi4

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/1524-4-0x00000000048B0000-0x00000000049CB000-memory.dmp	family_djvu
behavioral1/memory/3088-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/3088-2-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/3088-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/3088-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/3088-12-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/3112-15-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/3112-16-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/3112-17-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/3112-19-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/3112-18-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/3112-20-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/3112-24-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/3112-26-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/3112-27-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/3112-28-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/3112-29-0x0000000000400000-0x0000000000537000-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:

d63381aa21d304bf09bc7f9ef703d395ba3212fe7b694440f63f7d5b9e7b67e0.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2860750803-256193626-1801997576-1000\Control Panel\International\Geo\Nation	d63381aa21d304bf09bc7f9ef703d395ba3212fe7b694440f63f7d5b9e7b67e0.exe

Modifies file permissions 1 TTPs 1 IoCs
discovery

File and Directory Permissions Modification
T1222

Processes:

icacls.exe

pid process

4064 icacls.exe

pid	process
4064	icacls.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

d63381aa21d304bf09bc7f9ef703d395ba3212fe7b694440f63f7d5b9e7b67e0.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2860750803-256193626-1801997576-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\30346694-d19a-420e-9bbc-d3d43cacddca\\d63381aa21d304bf09bc7f9ef703d395ba3212fe7b694440f63f7d5b9e7b67e0.exe\" --AutoStart"	d63381aa21d304bf09bc7f9ef703d395ba3212fe7b694440f63f7d5b9e7b67e0.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:

d63381aa21d304bf09bc7f9ef703d395ba3212fe7b694440f63f7d5b9e7b67e0.exed63381aa21d304bf09bc7f9ef703d395ba3212fe7b694440f63f7d5b9e7b67e0.exe

description	pid	process	target process
PID 1524 set thread context of 3088	1524	d63381aa21d304bf09bc7f9ef703d395ba3212fe7b694440f63f7d5b9e7b67e0.exe	d63381aa21d304bf09bc7f9ef703d395ba3212fe7b694440f63f7d5b9e7b67e0.exe
PID 5268 set thread context of 3112	5268	d63381aa21d304bf09bc7f9ef703d395ba3212fe7b694440f63f7d5b9e7b67e0.exe	d63381aa21d304bf09bc7f9ef703d395ba3212fe7b694440f63f7d5b9e7b67e0.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:

d63381aa21d304bf09bc7f9ef703d395ba3212fe7b694440f63f7d5b9e7b67e0.exed63381aa21d304bf09bc7f9ef703d395ba3212fe7b694440f63f7d5b9e7b67e0.exe

pid	process
3088	d63381aa21d304bf09bc7f9ef703d395ba3212fe7b694440f63f7d5b9e7b67e0.exe
3088	d63381aa21d304bf09bc7f9ef703d395ba3212fe7b694440f63f7d5b9e7b67e0.exe
3112	d63381aa21d304bf09bc7f9ef703d395ba3212fe7b694440f63f7d5b9e7b67e0.exe
3112	d63381aa21d304bf09bc7f9ef703d395ba3212fe7b694440f63f7d5b9e7b67e0.exe

Suspicious use of WriteProcessMemory 26 IoCs

Processes:

d63381aa21d304bf09bc7f9ef703d395ba3212fe7b694440f63f7d5b9e7b67e0.exed63381aa21d304bf09bc7f9ef703d395ba3212fe7b694440f63f7d5b9e7b67e0.exed63381aa21d304bf09bc7f9ef703d395ba3212fe7b694440f63f7d5b9e7b67e0.exe

C:\Users\Admin\AppData\Local\Temp\d63381aa21d304bf09bc7f9ef703d395ba3212fe7b694440f63f7d5b9e7b67e0.exe
"C:\Users\Admin\AppData\Local\Temp\d63381aa21d304bf09bc7f9ef703d395ba3212fe7b694440f63f7d5b9e7b67e0.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1524

C:\Users\Admin\AppData\Local\Temp\d63381aa21d304bf09bc7f9ef703d395ba3212fe7b694440f63f7d5b9e7b67e0.exe
"C:\Users\Admin\AppData\Local\Temp\d63381aa21d304bf09bc7f9ef703d395ba3212fe7b694440f63f7d5b9e7b67e0.exe"
2⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:3088

C:\Windows\SysWOW64\icacls.exe
icacls "C:\Users\Admin\AppData\Local\30346694-d19a-420e-9bbc-d3d43cacddca" /deny *S-1-1-0:(OI)(CI)(DE,DC)
3⤵
- Modifies file permissions
PID:4064

C:\Users\Admin\AppData\Local\Temp\d63381aa21d304bf09bc7f9ef703d395ba3212fe7b694440f63f7d5b9e7b67e0.exe
"C:\Users\Admin\AppData\Local\Temp\d63381aa21d304bf09bc7f9ef703d395ba3212fe7b694440f63f7d5b9e7b67e0.exe" --Admin IsNotAutoStart IsNotTask
3⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:5268

C:\Users\Admin\AppData\Local\Temp\d63381aa21d304bf09bc7f9ef703d395ba3212fe7b694440f63f7d5b9e7b67e0.exe
"C:\Users\Admin\AppData\Local\Temp\d63381aa21d304bf09bc7f9ef703d395ba3212fe7b694440f63f7d5b9e7b67e0.exe" --Admin IsNotAutoStart IsNotTask
4⤵
- Suspicious behavior: EnumeratesProcesses
PID:3112

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

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Downloads

C:\Users\Admin\AppData\Local\30346694-d19a-420e-9bbc-d3d43cacddca\d63381aa21d304bf09bc7f9ef703d395ba3212fe7b694440f63f7d5b9e7b67e0.exe
Filesize
741KB

MD5
0f9eb2d254e8990f6afbcfb3a8d99ce8

SHA1
a0183d3f76abb8fa1468b59354674526de31b13e

SHA256
d63381aa21d304bf09bc7f9ef703d395ba3212fe7b694440f63f7d5b9e7b67e0

SHA512
8d3dcbd248c072f78248fee9177911ed2d1b7cd439ccf1cd8f5f77f67ea87fa16d715cc5cc35ca933e5c8cf09609658889cff7227ac1f17d580b832ed1628c35

Download Submit
memory/1524-1-0x0000000003030000-0x00000000030C7000-memory.dmp

Filesize
604KB

Download
memory/1524-4-0x00000000048B0000-0x00000000049CB000-memory.dmp

Filesize
1.1MB

Download
memory/3088-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3088-2-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3088-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3088-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3088-12-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3112-15-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3112-16-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3112-17-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3112-19-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3112-18-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3112-20-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3112-24-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3112-26-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3112-27-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3112-28-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3112-29-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download

description	pid	process	target process
PID 1524 wrote to memory of 3088	1524	d63381aa21d304bf09bc7f9ef703d395ba3212fe7b694440f63f7d5b9e7b67e0.exe	d63381aa21d304bf09bc7f9ef703d395ba3212fe7b694440f63f7d5b9e7b67e0.exe
PID 1524 wrote to memory of 3088	1524	d63381aa21d304bf09bc7f9ef703d395ba3212fe7b694440f63f7d5b9e7b67e0.exe	d63381aa21d304bf09bc7f9ef703d395ba3212fe7b694440f63f7d5b9e7b67e0.exe
PID 1524 wrote to memory of 3088	1524	d63381aa21d304bf09bc7f9ef703d395ba3212fe7b694440f63f7d5b9e7b67e0.exe	d63381aa21d304bf09bc7f9ef703d395ba3212fe7b694440f63f7d5b9e7b67e0.exe
PID 1524 wrote to memory of 3088	1524	d63381aa21d304bf09bc7f9ef703d395ba3212fe7b694440f63f7d5b9e7b67e0.exe	d63381aa21d304bf09bc7f9ef703d395ba3212fe7b694440f63f7d5b9e7b67e0.exe
PID 1524 wrote to memory of 3088	1524	d63381aa21d304bf09bc7f9ef703d395ba3212fe7b694440f63f7d5b9e7b67e0.exe	d63381aa21d304bf09bc7f9ef703d395ba3212fe7b694440f63f7d5b9e7b67e0.exe
PID 1524 wrote to memory of 3088	1524	d63381aa21d304bf09bc7f9ef703d395ba3212fe7b694440f63f7d5b9e7b67e0.exe	d63381aa21d304bf09bc7f9ef703d395ba3212fe7b694440f63f7d5b9e7b67e0.exe
PID 1524 wrote to memory of 3088	1524	d63381aa21d304bf09bc7f9ef703d395ba3212fe7b694440f63f7d5b9e7b67e0.exe	d63381aa21d304bf09bc7f9ef703d395ba3212fe7b694440f63f7d5b9e7b67e0.exe
PID 1524 wrote to memory of 3088	1524	d63381aa21d304bf09bc7f9ef703d395ba3212fe7b694440f63f7d5b9e7b67e0.exe	d63381aa21d304bf09bc7f9ef703d395ba3212fe7b694440f63f7d5b9e7b67e0.exe
PID 1524 wrote to memory of 3088	1524	d63381aa21d304bf09bc7f9ef703d395ba3212fe7b694440f63f7d5b9e7b67e0.exe	d63381aa21d304bf09bc7f9ef703d395ba3212fe7b694440f63f7d5b9e7b67e0.exe
PID 1524 wrote to memory of 3088	1524	d63381aa21d304bf09bc7f9ef703d395ba3212fe7b694440f63f7d5b9e7b67e0.exe	d63381aa21d304bf09bc7f9ef703d395ba3212fe7b694440f63f7d5b9e7b67e0.exe
PID 3088 wrote to memory of 4064	3088	d63381aa21d304bf09bc7f9ef703d395ba3212fe7b694440f63f7d5b9e7b67e0.exe	icacls.exe
PID 3088 wrote to memory of 4064	3088	d63381aa21d304bf09bc7f9ef703d395ba3212fe7b694440f63f7d5b9e7b67e0.exe	icacls.exe
PID 3088 wrote to memory of 4064	3088	d63381aa21d304bf09bc7f9ef703d395ba3212fe7b694440f63f7d5b9e7b67e0.exe	icacls.exe
PID 3088 wrote to memory of 5268	3088	d63381aa21d304bf09bc7f9ef703d395ba3212fe7b694440f63f7d5b9e7b67e0.exe	d63381aa21d304bf09bc7f9ef703d395ba3212fe7b694440f63f7d5b9e7b67e0.exe
PID 3088 wrote to memory of 5268	3088	d63381aa21d304bf09bc7f9ef703d395ba3212fe7b694440f63f7d5b9e7b67e0.exe	d63381aa21d304bf09bc7f9ef703d395ba3212fe7b694440f63f7d5b9e7b67e0.exe
PID 3088 wrote to memory of 5268	3088	d63381aa21d304bf09bc7f9ef703d395ba3212fe7b694440f63f7d5b9e7b67e0.exe	d63381aa21d304bf09bc7f9ef703d395ba3212fe7b694440f63f7d5b9e7b67e0.exe
PID 5268 wrote to memory of 3112	5268	d63381aa21d304bf09bc7f9ef703d395ba3212fe7b694440f63f7d5b9e7b67e0.exe	d63381aa21d304bf09bc7f9ef703d395ba3212fe7b694440f63f7d5b9e7b67e0.exe
PID 5268 wrote to memory of 3112	5268	d63381aa21d304bf09bc7f9ef703d395ba3212fe7b694440f63f7d5b9e7b67e0.exe	d63381aa21d304bf09bc7f9ef703d395ba3212fe7b694440f63f7d5b9e7b67e0.exe
PID 5268 wrote to memory of 3112	5268	d63381aa21d304bf09bc7f9ef703d395ba3212fe7b694440f63f7d5b9e7b67e0.exe	d63381aa21d304bf09bc7f9ef703d395ba3212fe7b694440f63f7d5b9e7b67e0.exe
PID 5268 wrote to memory of 3112	5268	d63381aa21d304bf09bc7f9ef703d395ba3212fe7b694440f63f7d5b9e7b67e0.exe	d63381aa21d304bf09bc7f9ef703d395ba3212fe7b694440f63f7d5b9e7b67e0.exe
PID 5268 wrote to memory of 3112	5268	d63381aa21d304bf09bc7f9ef703d395ba3212fe7b694440f63f7d5b9e7b67e0.exe	d63381aa21d304bf09bc7f9ef703d395ba3212fe7b694440f63f7d5b9e7b67e0.exe
PID 5268 wrote to memory of 3112	5268	d63381aa21d304bf09bc7f9ef703d395ba3212fe7b694440f63f7d5b9e7b67e0.exe	d63381aa21d304bf09bc7f9ef703d395ba3212fe7b694440f63f7d5b9e7b67e0.exe
PID 5268 wrote to memory of 3112	5268	d63381aa21d304bf09bc7f9ef703d395ba3212fe7b694440f63f7d5b9e7b67e0.exe	d63381aa21d304bf09bc7f9ef703d395ba3212fe7b694440f63f7d5b9e7b67e0.exe
PID 5268 wrote to memory of 3112	5268	d63381aa21d304bf09bc7f9ef703d395ba3212fe7b694440f63f7d5b9e7b67e0.exe	d63381aa21d304bf09bc7f9ef703d395ba3212fe7b694440f63f7d5b9e7b67e0.exe
PID 5268 wrote to memory of 3112	5268	d63381aa21d304bf09bc7f9ef703d395ba3212fe7b694440f63f7d5b9e7b67e0.exe	d63381aa21d304bf09bc7f9ef703d395ba3212fe7b694440f63f7d5b9e7b67e0.exe
PID 5268 wrote to memory of 3112	5268	d63381aa21d304bf09bc7f9ef703d395ba3212fe7b694440f63f7d5b9e7b67e0.exe	d63381aa21d304bf09bc7f9ef703d395ba3212fe7b694440f63f7d5b9e7b67e0.exe

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

Replay Monitor

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Downloads