djvu | 12d7f49002d657a4f60e39aa99814116d347e4290259048fd4d232a3d5e610d7

General

Target

12d7f49002d657a4f60e39aa99814116d347e4290259048fd4d232a3d5e610d7.exe
Size

787KB
MD5

6eb54fca6d3e596e24db78c33d6cc596
SHA1

162b56f4db5bbf5ca3f8130ed09b8c46f1356967
SHA256

12d7f49002d657a4f60e39aa99814116d347e4290259048fd4d232a3d5e610d7
SHA512

023176ba37c3073187f0c695025cfbea772d17dfeefe44a53a8f0c03dbf1cc72d4fc950b272141670205de43db9a4901b3663831bf1bd3923c5df78993922352
SSDEEP

12288:xaWpB9zGzmLSH3y+Yt72N5G7VzAEJKhDS4n065zzW2+cMWrILsuK:I4Gz6exT5WAQKlS4n0+HqcMWrIj

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

C2

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

Attributes

extension
.bgjs
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/1688-2-0x0000000005D80000-0x0000000005E9B000-memory.dmp	family_djvu
behavioral1/memory/1268-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1268-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1268-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1268-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1268-13-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4808-15-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4808-16-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4808-18-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4808-17-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4808-19-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4808-20-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4808-24-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4808-26-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4808-27-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4808-28-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4808-29-0x0000000000400000-0x0000000000537000-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:

12d7f49002d657a4f60e39aa99814116d347e4290259048fd4d232a3d5e610d7.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2860750803-256193626-1801997576-1000\Control Panel\International\Geo\Nation	12d7f49002d657a4f60e39aa99814116d347e4290259048fd4d232a3d5e610d7.exe

Modifies file permissions 1 TTPs 1 IoCs
discovery

File and Directory Permissions Modification
T1222

Processes:

icacls.exe

pid process

1416 icacls.exe

pid	process
1416	icacls.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

12d7f49002d657a4f60e39aa99814116d347e4290259048fd4d232a3d5e610d7.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\\a684079b-6bc8-4277-96af-cde435f8b502\\12d7f49002d657a4f60e39aa99814116d347e4290259048fd4d232a3d5e610d7.exe\" --AutoStart"	12d7f49002d657a4f60e39aa99814116d347e4290259048fd4d232a3d5e610d7.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

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

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

Suspicious use of SetThreadContext 2 IoCs

Processes:

12d7f49002d657a4f60e39aa99814116d347e4290259048fd4d232a3d5e610d7.exe12d7f49002d657a4f60e39aa99814116d347e4290259048fd4d232a3d5e610d7.exe

description	pid	process	target process
PID 1688 set thread context of 1268	1688	12d7f49002d657a4f60e39aa99814116d347e4290259048fd4d232a3d5e610d7.exe	12d7f49002d657a4f60e39aa99814116d347e4290259048fd4d232a3d5e610d7.exe
PID 3108 set thread context of 4808	3108	12d7f49002d657a4f60e39aa99814116d347e4290259048fd4d232a3d5e610d7.exe	12d7f49002d657a4f60e39aa99814116d347e4290259048fd4d232a3d5e610d7.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:

12d7f49002d657a4f60e39aa99814116d347e4290259048fd4d232a3d5e610d7.exe12d7f49002d657a4f60e39aa99814116d347e4290259048fd4d232a3d5e610d7.exe

pid	process
1268	12d7f49002d657a4f60e39aa99814116d347e4290259048fd4d232a3d5e610d7.exe
1268	12d7f49002d657a4f60e39aa99814116d347e4290259048fd4d232a3d5e610d7.exe
4808	12d7f49002d657a4f60e39aa99814116d347e4290259048fd4d232a3d5e610d7.exe
4808	12d7f49002d657a4f60e39aa99814116d347e4290259048fd4d232a3d5e610d7.exe

Suspicious use of WriteProcessMemory 26 IoCs

Processes:

12d7f49002d657a4f60e39aa99814116d347e4290259048fd4d232a3d5e610d7.exe12d7f49002d657a4f60e39aa99814116d347e4290259048fd4d232a3d5e610d7.exe12d7f49002d657a4f60e39aa99814116d347e4290259048fd4d232a3d5e610d7.exe

C:\Users\Admin\AppData\Local\Temp\12d7f49002d657a4f60e39aa99814116d347e4290259048fd4d232a3d5e610d7.exe
"C:\Users\Admin\AppData\Local\Temp\12d7f49002d657a4f60e39aa99814116d347e4290259048fd4d232a3d5e610d7.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1688

C:\Users\Admin\AppData\Local\Temp\12d7f49002d657a4f60e39aa99814116d347e4290259048fd4d232a3d5e610d7.exe
"C:\Users\Admin\AppData\Local\Temp\12d7f49002d657a4f60e39aa99814116d347e4290259048fd4d232a3d5e610d7.exe"
2⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:1268

C:\Windows\SysWOW64\icacls.exe
icacls "C:\Users\Admin\AppData\Local\a684079b-6bc8-4277-96af-cde435f8b502" /deny *S-1-1-0:(OI)(CI)(DE,DC)
3⤵
- Modifies file permissions
PID:1416

C:\Users\Admin\AppData\Local\Temp\12d7f49002d657a4f60e39aa99814116d347e4290259048fd4d232a3d5e610d7.exe
"C:\Users\Admin\AppData\Local\Temp\12d7f49002d657a4f60e39aa99814116d347e4290259048fd4d232a3d5e610d7.exe" --Admin IsNotAutoStart IsNotTask
3⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3108

C:\Users\Admin\AppData\Local\Temp\12d7f49002d657a4f60e39aa99814116d347e4290259048fd4d232a3d5e610d7.exe
"C:\Users\Admin\AppData\Local\Temp\12d7f49002d657a4f60e39aa99814116d347e4290259048fd4d232a3d5e610d7.exe" --Admin IsNotAutoStart IsNotTask
4⤵
- Suspicious behavior: EnumeratesProcesses
PID:4808

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\Local\a684079b-6bc8-4277-96af-cde435f8b502\12d7f49002d657a4f60e39aa99814116d347e4290259048fd4d232a3d5e610d7.exe

Filesize
787KB

MD5
6eb54fca6d3e596e24db78c33d6cc596

SHA1
162b56f4db5bbf5ca3f8130ed09b8c46f1356967

SHA256
12d7f49002d657a4f60e39aa99814116d347e4290259048fd4d232a3d5e610d7

SHA512
023176ba37c3073187f0c695025cfbea772d17dfeefe44a53a8f0c03dbf1cc72d4fc950b272141670205de43db9a4901b3663831bf1bd3923c5df78993922352

Download Submit
memory/1268-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1268-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1268-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1268-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1268-13-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1688-2-0x0000000005D80000-0x0000000005E9B000-memory.dmp

Filesize
1.1MB

Download
memory/1688-1-0x00000000042C0000-0x000000000435D000-memory.dmp

Filesize
628KB

Download
memory/4808-15-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4808-16-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4808-18-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4808-17-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4808-19-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4808-20-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4808-24-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4808-26-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4808-27-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4808-28-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4808-29-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download

description	pid	process	target process
PID 1688 wrote to memory of 1268	1688	12d7f49002d657a4f60e39aa99814116d347e4290259048fd4d232a3d5e610d7.exe	12d7f49002d657a4f60e39aa99814116d347e4290259048fd4d232a3d5e610d7.exe
PID 1688 wrote to memory of 1268	1688	12d7f49002d657a4f60e39aa99814116d347e4290259048fd4d232a3d5e610d7.exe	12d7f49002d657a4f60e39aa99814116d347e4290259048fd4d232a3d5e610d7.exe
PID 1688 wrote to memory of 1268	1688	12d7f49002d657a4f60e39aa99814116d347e4290259048fd4d232a3d5e610d7.exe	12d7f49002d657a4f60e39aa99814116d347e4290259048fd4d232a3d5e610d7.exe
PID 1688 wrote to memory of 1268	1688	12d7f49002d657a4f60e39aa99814116d347e4290259048fd4d232a3d5e610d7.exe	12d7f49002d657a4f60e39aa99814116d347e4290259048fd4d232a3d5e610d7.exe
PID 1688 wrote to memory of 1268	1688	12d7f49002d657a4f60e39aa99814116d347e4290259048fd4d232a3d5e610d7.exe	12d7f49002d657a4f60e39aa99814116d347e4290259048fd4d232a3d5e610d7.exe
PID 1688 wrote to memory of 1268	1688	12d7f49002d657a4f60e39aa99814116d347e4290259048fd4d232a3d5e610d7.exe	12d7f49002d657a4f60e39aa99814116d347e4290259048fd4d232a3d5e610d7.exe
PID 1688 wrote to memory of 1268	1688	12d7f49002d657a4f60e39aa99814116d347e4290259048fd4d232a3d5e610d7.exe	12d7f49002d657a4f60e39aa99814116d347e4290259048fd4d232a3d5e610d7.exe
PID 1688 wrote to memory of 1268	1688	12d7f49002d657a4f60e39aa99814116d347e4290259048fd4d232a3d5e610d7.exe	12d7f49002d657a4f60e39aa99814116d347e4290259048fd4d232a3d5e610d7.exe
PID 1688 wrote to memory of 1268	1688	12d7f49002d657a4f60e39aa99814116d347e4290259048fd4d232a3d5e610d7.exe	12d7f49002d657a4f60e39aa99814116d347e4290259048fd4d232a3d5e610d7.exe
PID 1688 wrote to memory of 1268	1688	12d7f49002d657a4f60e39aa99814116d347e4290259048fd4d232a3d5e610d7.exe	12d7f49002d657a4f60e39aa99814116d347e4290259048fd4d232a3d5e610d7.exe
PID 1268 wrote to memory of 1416	1268	12d7f49002d657a4f60e39aa99814116d347e4290259048fd4d232a3d5e610d7.exe	icacls.exe
PID 1268 wrote to memory of 1416	1268	12d7f49002d657a4f60e39aa99814116d347e4290259048fd4d232a3d5e610d7.exe	icacls.exe
PID 1268 wrote to memory of 1416	1268	12d7f49002d657a4f60e39aa99814116d347e4290259048fd4d232a3d5e610d7.exe	icacls.exe
PID 1268 wrote to memory of 3108	1268	12d7f49002d657a4f60e39aa99814116d347e4290259048fd4d232a3d5e610d7.exe	12d7f49002d657a4f60e39aa99814116d347e4290259048fd4d232a3d5e610d7.exe
PID 1268 wrote to memory of 3108	1268	12d7f49002d657a4f60e39aa99814116d347e4290259048fd4d232a3d5e610d7.exe	12d7f49002d657a4f60e39aa99814116d347e4290259048fd4d232a3d5e610d7.exe
PID 1268 wrote to memory of 3108	1268	12d7f49002d657a4f60e39aa99814116d347e4290259048fd4d232a3d5e610d7.exe	12d7f49002d657a4f60e39aa99814116d347e4290259048fd4d232a3d5e610d7.exe
PID 3108 wrote to memory of 4808	3108	12d7f49002d657a4f60e39aa99814116d347e4290259048fd4d232a3d5e610d7.exe	12d7f49002d657a4f60e39aa99814116d347e4290259048fd4d232a3d5e610d7.exe
PID 3108 wrote to memory of 4808	3108	12d7f49002d657a4f60e39aa99814116d347e4290259048fd4d232a3d5e610d7.exe	12d7f49002d657a4f60e39aa99814116d347e4290259048fd4d232a3d5e610d7.exe
PID 3108 wrote to memory of 4808	3108	12d7f49002d657a4f60e39aa99814116d347e4290259048fd4d232a3d5e610d7.exe	12d7f49002d657a4f60e39aa99814116d347e4290259048fd4d232a3d5e610d7.exe
PID 3108 wrote to memory of 4808	3108	12d7f49002d657a4f60e39aa99814116d347e4290259048fd4d232a3d5e610d7.exe	12d7f49002d657a4f60e39aa99814116d347e4290259048fd4d232a3d5e610d7.exe
PID 3108 wrote to memory of 4808	3108	12d7f49002d657a4f60e39aa99814116d347e4290259048fd4d232a3d5e610d7.exe	12d7f49002d657a4f60e39aa99814116d347e4290259048fd4d232a3d5e610d7.exe
PID 3108 wrote to memory of 4808	3108	12d7f49002d657a4f60e39aa99814116d347e4290259048fd4d232a3d5e610d7.exe	12d7f49002d657a4f60e39aa99814116d347e4290259048fd4d232a3d5e610d7.exe
PID 3108 wrote to memory of 4808	3108	12d7f49002d657a4f60e39aa99814116d347e4290259048fd4d232a3d5e610d7.exe	12d7f49002d657a4f60e39aa99814116d347e4290259048fd4d232a3d5e610d7.exe
PID 3108 wrote to memory of 4808	3108	12d7f49002d657a4f60e39aa99814116d347e4290259048fd4d232a3d5e610d7.exe	12d7f49002d657a4f60e39aa99814116d347e4290259048fd4d232a3d5e610d7.exe
PID 3108 wrote to memory of 4808	3108	12d7f49002d657a4f60e39aa99814116d347e4290259048fd4d232a3d5e610d7.exe	12d7f49002d657a4f60e39aa99814116d347e4290259048fd4d232a3d5e610d7.exe
PID 3108 wrote to memory of 4808	3108	12d7f49002d657a4f60e39aa99814116d347e4290259048fd4d232a3d5e610d7.exe	12d7f49002d657a4f60e39aa99814116d347e4290259048fd4d232a3d5e610d7.exe

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads