djvu | 200690de2b973c6f7a702d5129dea09aec57d548cab07e19f012e5a8e0c6ae64

General

Target

200690de2b973c6f7a702d5129dea09aec57d548cab07e19f012e5a8e0c6ae64.exe
Size

780KB
MD5

4b2fb93459b4e03686148d0a1d3c1f00
SHA1

b16c9e43f7389ba51e1423f676cc61d9ec9d4354
SHA256

200690de2b973c6f7a702d5129dea09aec57d548cab07e19f012e5a8e0c6ae64
SHA512

31caad1014245fb375ecaefa11bdacdbf8e661acedf3411f75310e4e8dcf8f9ce8ec11ec17719677fe77afbb3036de07811c4309dbd9251c04edff017947e224
SSDEEP

12288:5O9ISzaeV1oie7CIXYEEsB7HBDGsqQuXpLyQVbDDzQBlFz+0Zdqbmw3q2MFC:5O7aezoB7/o5sBM/vRD8lFzzdeFtMFC

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 15 IoCs

resource	yara_rule
behavioral2/memory/5792-2-0x0000000005F00000-0x000000000601B000-memory.dmp	family_djvu
behavioral2/memory/216-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/216-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/216-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/216-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/216-20-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/708-22-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/708-27-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/708-28-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/708-29-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/708-32-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/708-34-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/708-35-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/708-36-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/708-37-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu

Djvu Ransomware
Ransomware which is a variant of the STOP family.
ransomware djvu
Djvu family
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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-308834014-1004923324-1191300197-1000\Control Panel\International\Geo\Nation	200690de2b973c6f7a702d5129dea09aec57d548cab07e19f012e5a8e0c6ae64.exe

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
3048	icacls.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-308834014-1004923324-1191300197-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\9d99d958-f39e-4e53-b7d3-b21f98b7fbd0\\200690de2b973c6f7a702d5129dea09aec57d548cab07e19f012e5a8e0c6ae64.exe\" --AutoStart"	200690de2b973c6f7a702d5129dea09aec57d548cab07e19f012e5a8e0c6ae64.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.

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

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 5792 set thread context of 216	5792	200690de2b973c6f7a702d5129dea09aec57d548cab07e19f012e5a8e0c6ae64.exe	85
PID 1456 set thread context of 708	1456	200690de2b973c6f7a702d5129dea09aec57d548cab07e19f012e5a8e0c6ae64.exe	92

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 5 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	200690de2b973c6f7a702d5129dea09aec57d548cab07e19f012e5a8e0c6ae64.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	icacls.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	200690de2b973c6f7a702d5129dea09aec57d548cab07e19f012e5a8e0c6ae64.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	200690de2b973c6f7a702d5129dea09aec57d548cab07e19f012e5a8e0c6ae64.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	200690de2b973c6f7a702d5129dea09aec57d548cab07e19f012e5a8e0c6ae64.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
216	200690de2b973c6f7a702d5129dea09aec57d548cab07e19f012e5a8e0c6ae64.exe
216	200690de2b973c6f7a702d5129dea09aec57d548cab07e19f012e5a8e0c6ae64.exe
708	200690de2b973c6f7a702d5129dea09aec57d548cab07e19f012e5a8e0c6ae64.exe
708	200690de2b973c6f7a702d5129dea09aec57d548cab07e19f012e5a8e0c6ae64.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 5792 wrote to memory of 216	5792	200690de2b973c6f7a702d5129dea09aec57d548cab07e19f012e5a8e0c6ae64.exe	85
PID 5792 wrote to memory of 216	5792	200690de2b973c6f7a702d5129dea09aec57d548cab07e19f012e5a8e0c6ae64.exe	85
PID 5792 wrote to memory of 216	5792	200690de2b973c6f7a702d5129dea09aec57d548cab07e19f012e5a8e0c6ae64.exe	85
PID 5792 wrote to memory of 216	5792	200690de2b973c6f7a702d5129dea09aec57d548cab07e19f012e5a8e0c6ae64.exe	85
PID 5792 wrote to memory of 216	5792	200690de2b973c6f7a702d5129dea09aec57d548cab07e19f012e5a8e0c6ae64.exe	85
PID 5792 wrote to memory of 216	5792	200690de2b973c6f7a702d5129dea09aec57d548cab07e19f012e5a8e0c6ae64.exe	85
PID 5792 wrote to memory of 216	5792	200690de2b973c6f7a702d5129dea09aec57d548cab07e19f012e5a8e0c6ae64.exe	85
PID 5792 wrote to memory of 216	5792	200690de2b973c6f7a702d5129dea09aec57d548cab07e19f012e5a8e0c6ae64.exe	85
PID 5792 wrote to memory of 216	5792	200690de2b973c6f7a702d5129dea09aec57d548cab07e19f012e5a8e0c6ae64.exe	85
PID 5792 wrote to memory of 216	5792	200690de2b973c6f7a702d5129dea09aec57d548cab07e19f012e5a8e0c6ae64.exe	85
PID 216 wrote to memory of 3048	216	200690de2b973c6f7a702d5129dea09aec57d548cab07e19f012e5a8e0c6ae64.exe	89
PID 216 wrote to memory of 3048	216	200690de2b973c6f7a702d5129dea09aec57d548cab07e19f012e5a8e0c6ae64.exe	89
PID 216 wrote to memory of 3048	216	200690de2b973c6f7a702d5129dea09aec57d548cab07e19f012e5a8e0c6ae64.exe	89
PID 216 wrote to memory of 1456	216	200690de2b973c6f7a702d5129dea09aec57d548cab07e19f012e5a8e0c6ae64.exe	90
PID 216 wrote to memory of 1456	216	200690de2b973c6f7a702d5129dea09aec57d548cab07e19f012e5a8e0c6ae64.exe	90
PID 216 wrote to memory of 1456	216	200690de2b973c6f7a702d5129dea09aec57d548cab07e19f012e5a8e0c6ae64.exe	90
PID 1456 wrote to memory of 708	1456	200690de2b973c6f7a702d5129dea09aec57d548cab07e19f012e5a8e0c6ae64.exe	92
PID 1456 wrote to memory of 708	1456	200690de2b973c6f7a702d5129dea09aec57d548cab07e19f012e5a8e0c6ae64.exe	92
PID 1456 wrote to memory of 708	1456	200690de2b973c6f7a702d5129dea09aec57d548cab07e19f012e5a8e0c6ae64.exe	92
PID 1456 wrote to memory of 708	1456	200690de2b973c6f7a702d5129dea09aec57d548cab07e19f012e5a8e0c6ae64.exe	92
PID 1456 wrote to memory of 708	1456	200690de2b973c6f7a702d5129dea09aec57d548cab07e19f012e5a8e0c6ae64.exe	92
PID 1456 wrote to memory of 708	1456	200690de2b973c6f7a702d5129dea09aec57d548cab07e19f012e5a8e0c6ae64.exe	92
PID 1456 wrote to memory of 708	1456	200690de2b973c6f7a702d5129dea09aec57d548cab07e19f012e5a8e0c6ae64.exe	92
PID 1456 wrote to memory of 708	1456	200690de2b973c6f7a702d5129dea09aec57d548cab07e19f012e5a8e0c6ae64.exe	92
PID 1456 wrote to memory of 708	1456	200690de2b973c6f7a702d5129dea09aec57d548cab07e19f012e5a8e0c6ae64.exe	92
PID 1456 wrote to memory of 708	1456	200690de2b973c6f7a702d5129dea09aec57d548cab07e19f012e5a8e0c6ae64.exe	92

C:\Users\Admin\AppData\Local\Temp\200690de2b973c6f7a702d5129dea09aec57d548cab07e19f012e5a8e0c6ae64.exe
"C:\Users\Admin\AppData\Local\Temp\200690de2b973c6f7a702d5129dea09aec57d548cab07e19f012e5a8e0c6ae64.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:5792
- C:\Users\Admin\AppData\Local\Temp\200690de2b973c6f7a702d5129dea09aec57d548cab07e19f012e5a8e0c6ae64.exe
  "C:\Users\Admin\AppData\Local\Temp\200690de2b973c6f7a702d5129dea09aec57d548cab07e19f012e5a8e0c6ae64.exe"
  2⤵
  - Checks computer location settings
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:216
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\9d99d958-f39e-4e53-b7d3-b21f98b7fbd0" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    - System Location Discovery: System Language Discovery
    PID:3048
- - C:\Users\Admin\AppData\Local\Temp\200690de2b973c6f7a702d5129dea09aec57d548cab07e19f012e5a8e0c6ae64.exe
    "C:\Users\Admin\AppData\Local\Temp\200690de2b973c6f7a702d5129dea09aec57d548cab07e19f012e5a8e0c6ae64.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:1456
  - - C:\Users\Admin\AppData\Local\Temp\200690de2b973c6f7a702d5129dea09aec57d548cab07e19f012e5a8e0c6ae64.exe
      "C:\Users\Admin\AppData\Local\Temp\200690de2b973c6f7a702d5129dea09aec57d548cab07e19f012e5a8e0c6ae64.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      PID:708

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

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\8B2B9A00839EED1DFDCCC3BFC2F5DF12

Filesize
1KB

MD5
c9be626e9715952e9b70f92f912b9787

SHA1
aa2e946d9ad9027172d0d321917942b7562d6abe

SHA256
c13e8d22800c200915f87f71c31185053e4e60ca25de2e41e160e09cd2d815d4

SHA512
7581b7c593785380e9db3ae760af85c1a889f607a3cd2aa5a2695a0e5a0fe8ee751578e88f7d8c997faeda804e2fc2655d859bee2832eace526ed4379edaa3f5

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\B46811C17859FFB409CF0E904A4AA8F8

Filesize
436B

MD5
971c514f84bba0785f80aa1c23edfd79

SHA1
732acea710a87530c6b08ecdf32a110d254a54c8

SHA256
f157ed17fcaf8837fa82f8b69973848c9b10a02636848f995698212a08f31895

SHA512
43dc1425d80e170c645a3e3bb56da8c3acd31bd637329e9e37094ac346ac85434df4edcdbefc05ae00aea33a80a88e2af695997a495611217fe6706075a63c58

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\8B2B9A00839EED1DFDCCC3BFC2F5DF12

Filesize
174B

MD5
7df5ad4c72ae9a8aca972669e71ae7ce

SHA1
d33023b690234c983fb1c958ac8b69d68f6f9c91

SHA256
3922a068b846ab33109ae7ae3743dbc1330557b77e8ac0957488f704dd01b34a

SHA512
1ace93de18a5a9784992ed740b5bd15637b8990b131d8dda28386803d97238ce71c0a5861ee7283a67d8393aa4146c2551121f0e7f3ae9368e6e02df2ed92869

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\B46811C17859FFB409CF0E904A4AA8F8

Filesize
170B

MD5
6d84962631e3b7c095d676e47a52c2ff

SHA1
e7d986259bc045e68cea15abcf50356532193b14

SHA256
fe5427422e2f831eee5acdceb6a490fa81c545f9f288f6f898b4211a3bf03919

SHA512
44e37dea93fc67dfe2fa944c7ad815548cc183a3d21a9d86e6750dfa0d4d2d36cd52e023ad70cfdfcfbe8830dc96dcf83880db1fd7033832c4af3282f3f3a026

Download Submit
C:\Users\Admin\AppData\Local\9d99d958-f39e-4e53-b7d3-b21f98b7fbd0\200690de2b973c6f7a702d5129dea09aec57d548cab07e19f012e5a8e0c6ae64.exe

Filesize
780KB

MD5
4b2fb93459b4e03686148d0a1d3c1f00

SHA1
b16c9e43f7389ba51e1423f676cc61d9ec9d4354

SHA256
200690de2b973c6f7a702d5129dea09aec57d548cab07e19f012e5a8e0c6ae64

SHA512
31caad1014245fb375ecaefa11bdacdbf8e661acedf3411f75310e4e8dcf8f9ce8ec11ec17719677fe77afbb3036de07811c4309dbd9251c04edff017947e224

Download Submit
memory/216-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/216-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/216-20-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/216-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/216-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/708-29-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/708-22-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/708-27-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/708-28-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/708-32-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/708-34-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/708-35-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/708-36-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/708-37-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/5792-2-0x0000000005F00000-0x000000000601B000-memory.dmp

Filesize
1.1MB

Download
memory/5792-1-0x00000000045E0000-0x0000000004674000-memory.dmp

Filesize
592KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads