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 16 IoCs

Processes:

resource	yara_rule
behavioral2/memory/2940-2-0x0000000005E80000-0x0000000005F9B000-memory.dmp	family_djvu
behavioral2/memory/656-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/656-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/656-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/656-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/656-12-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2284-15-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2284-16-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2284-17-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2284-18-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2284-19-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2284-25-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2284-27-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2284-28-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2284-29-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2284-30-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu

Djvu Ransomware
Ransomware which is a variant of the STOP family.
ransomware djvu
Modifies file permissions 1 TTPs 1 IoCs
discovery

File and Directory Permissions Modification
T1222

Processes:

icacls.exe

pid process

564 icacls.exe

pid	process
564	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-1-5-21-1474490143-3221292397-4168103503-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\4cf7fccc-493c-45cc-9be7-62184a6aab36\\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

1 api.2ip.ua
5 api.2ip.ua

flow	ioc
1	api.2ip.ua
5	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

Processes:

12d7f49002d657a4f60e39aa99814116d347e4290259048fd4d232a3d5e610d7.exe12d7f49002d657a4f60e39aa99814116d347e4290259048fd4d232a3d5e610d7.exe

description	pid	process	target process
PID 2940 set thread context of 656	2940	12d7f49002d657a4f60e39aa99814116d347e4290259048fd4d232a3d5e610d7.exe	12d7f49002d657a4f60e39aa99814116d347e4290259048fd4d232a3d5e610d7.exe
PID 4396 set thread context of 2284	4396	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
656	12d7f49002d657a4f60e39aa99814116d347e4290259048fd4d232a3d5e610d7.exe
656	12d7f49002d657a4f60e39aa99814116d347e4290259048fd4d232a3d5e610d7.exe
2284	12d7f49002d657a4f60e39aa99814116d347e4290259048fd4d232a3d5e610d7.exe
2284	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:2940

C:\Users\Admin\AppData\Local\Temp\12d7f49002d657a4f60e39aa99814116d347e4290259048fd4d232a3d5e610d7.exe
"C:\Users\Admin\AppData\Local\Temp\12d7f49002d657a4f60e39aa99814116d347e4290259048fd4d232a3d5e610d7.exe"
2⤵
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:656

C:\Windows\SysWOW64\icacls.exe
icacls "C:\Users\Admin\AppData\Local\4cf7fccc-493c-45cc-9be7-62184a6aab36" /deny *S-1-1-0:(OI)(CI)(DE,DC)
3⤵
- Modifies file permissions
PID:564

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:4396

C:\Users\Admin\AppData\Local\Temp\12d7f49002d657a4f60e39aa99814116d347e4290259048fd4d232a3d5e610d7.exe
"C:\Users\Admin\AppData\Local\Temp\12d7f49002d657a4f60e39aa99814116d347e4290259048fd4d232a3d5e610d7.exe" --Admin IsNotAutoStart IsNotTask
4⤵
- Suspicious behavior: EnumeratesProcesses
PID:2284

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

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\4cf7fccc-493c-45cc-9be7-62184a6aab36\12d7f49002d657a4f60e39aa99814116d347e4290259048fd4d232a3d5e610d7.exe

Filesize
787KB

MD5
6eb54fca6d3e596e24db78c33d6cc596

SHA1
162b56f4db5bbf5ca3f8130ed09b8c46f1356967

SHA256
12d7f49002d657a4f60e39aa99814116d347e4290259048fd4d232a3d5e610d7

SHA512
023176ba37c3073187f0c695025cfbea772d17dfeefe44a53a8f0c03dbf1cc72d4fc950b272141670205de43db9a4901b3663831bf1bd3923c5df78993922352

Download Submit
memory/656-12-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/656-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/656-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/656-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/656-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2284-15-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2284-16-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2284-17-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2284-18-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2284-19-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2284-25-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2284-27-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2284-28-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2284-29-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2284-30-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2940-1-0x0000000004440000-0x00000000044D4000-memory.dmp

Filesize
592KB

Download
memory/2940-2-0x0000000005E80000-0x0000000005F9B000-memory.dmp

Filesize
1.1MB

Download

description	pid	process	target process
PID 2940 wrote to memory of 656	2940	12d7f49002d657a4f60e39aa99814116d347e4290259048fd4d232a3d5e610d7.exe	12d7f49002d657a4f60e39aa99814116d347e4290259048fd4d232a3d5e610d7.exe
PID 2940 wrote to memory of 656	2940	12d7f49002d657a4f60e39aa99814116d347e4290259048fd4d232a3d5e610d7.exe	12d7f49002d657a4f60e39aa99814116d347e4290259048fd4d232a3d5e610d7.exe
PID 2940 wrote to memory of 656	2940	12d7f49002d657a4f60e39aa99814116d347e4290259048fd4d232a3d5e610d7.exe	12d7f49002d657a4f60e39aa99814116d347e4290259048fd4d232a3d5e610d7.exe
PID 2940 wrote to memory of 656	2940	12d7f49002d657a4f60e39aa99814116d347e4290259048fd4d232a3d5e610d7.exe	12d7f49002d657a4f60e39aa99814116d347e4290259048fd4d232a3d5e610d7.exe
PID 2940 wrote to memory of 656	2940	12d7f49002d657a4f60e39aa99814116d347e4290259048fd4d232a3d5e610d7.exe	12d7f49002d657a4f60e39aa99814116d347e4290259048fd4d232a3d5e610d7.exe
PID 2940 wrote to memory of 656	2940	12d7f49002d657a4f60e39aa99814116d347e4290259048fd4d232a3d5e610d7.exe	12d7f49002d657a4f60e39aa99814116d347e4290259048fd4d232a3d5e610d7.exe
PID 2940 wrote to memory of 656	2940	12d7f49002d657a4f60e39aa99814116d347e4290259048fd4d232a3d5e610d7.exe	12d7f49002d657a4f60e39aa99814116d347e4290259048fd4d232a3d5e610d7.exe
PID 2940 wrote to memory of 656	2940	12d7f49002d657a4f60e39aa99814116d347e4290259048fd4d232a3d5e610d7.exe	12d7f49002d657a4f60e39aa99814116d347e4290259048fd4d232a3d5e610d7.exe
PID 2940 wrote to memory of 656	2940	12d7f49002d657a4f60e39aa99814116d347e4290259048fd4d232a3d5e610d7.exe	12d7f49002d657a4f60e39aa99814116d347e4290259048fd4d232a3d5e610d7.exe
PID 2940 wrote to memory of 656	2940	12d7f49002d657a4f60e39aa99814116d347e4290259048fd4d232a3d5e610d7.exe	12d7f49002d657a4f60e39aa99814116d347e4290259048fd4d232a3d5e610d7.exe
PID 656 wrote to memory of 564	656	12d7f49002d657a4f60e39aa99814116d347e4290259048fd4d232a3d5e610d7.exe	icacls.exe
PID 656 wrote to memory of 564	656	12d7f49002d657a4f60e39aa99814116d347e4290259048fd4d232a3d5e610d7.exe	icacls.exe
PID 656 wrote to memory of 564	656	12d7f49002d657a4f60e39aa99814116d347e4290259048fd4d232a3d5e610d7.exe	icacls.exe
PID 656 wrote to memory of 4396	656	12d7f49002d657a4f60e39aa99814116d347e4290259048fd4d232a3d5e610d7.exe	12d7f49002d657a4f60e39aa99814116d347e4290259048fd4d232a3d5e610d7.exe
PID 656 wrote to memory of 4396	656	12d7f49002d657a4f60e39aa99814116d347e4290259048fd4d232a3d5e610d7.exe	12d7f49002d657a4f60e39aa99814116d347e4290259048fd4d232a3d5e610d7.exe
PID 656 wrote to memory of 4396	656	12d7f49002d657a4f60e39aa99814116d347e4290259048fd4d232a3d5e610d7.exe	12d7f49002d657a4f60e39aa99814116d347e4290259048fd4d232a3d5e610d7.exe
PID 4396 wrote to memory of 2284	4396	12d7f49002d657a4f60e39aa99814116d347e4290259048fd4d232a3d5e610d7.exe	12d7f49002d657a4f60e39aa99814116d347e4290259048fd4d232a3d5e610d7.exe
PID 4396 wrote to memory of 2284	4396	12d7f49002d657a4f60e39aa99814116d347e4290259048fd4d232a3d5e610d7.exe	12d7f49002d657a4f60e39aa99814116d347e4290259048fd4d232a3d5e610d7.exe
PID 4396 wrote to memory of 2284	4396	12d7f49002d657a4f60e39aa99814116d347e4290259048fd4d232a3d5e610d7.exe	12d7f49002d657a4f60e39aa99814116d347e4290259048fd4d232a3d5e610d7.exe
PID 4396 wrote to memory of 2284	4396	12d7f49002d657a4f60e39aa99814116d347e4290259048fd4d232a3d5e610d7.exe	12d7f49002d657a4f60e39aa99814116d347e4290259048fd4d232a3d5e610d7.exe
PID 4396 wrote to memory of 2284	4396	12d7f49002d657a4f60e39aa99814116d347e4290259048fd4d232a3d5e610d7.exe	12d7f49002d657a4f60e39aa99814116d347e4290259048fd4d232a3d5e610d7.exe
PID 4396 wrote to memory of 2284	4396	12d7f49002d657a4f60e39aa99814116d347e4290259048fd4d232a3d5e610d7.exe	12d7f49002d657a4f60e39aa99814116d347e4290259048fd4d232a3d5e610d7.exe
PID 4396 wrote to memory of 2284	4396	12d7f49002d657a4f60e39aa99814116d347e4290259048fd4d232a3d5e610d7.exe	12d7f49002d657a4f60e39aa99814116d347e4290259048fd4d232a3d5e610d7.exe
PID 4396 wrote to memory of 2284	4396	12d7f49002d657a4f60e39aa99814116d347e4290259048fd4d232a3d5e610d7.exe	12d7f49002d657a4f60e39aa99814116d347e4290259048fd4d232a3d5e610d7.exe
PID 4396 wrote to memory of 2284	4396	12d7f49002d657a4f60e39aa99814116d347e4290259048fd4d232a3d5e610d7.exe	12d7f49002d657a4f60e39aa99814116d347e4290259048fd4d232a3d5e610d7.exe
PID 4396 wrote to memory of 2284	4396	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