djvu | 5f1667cc07b5b10456ba5f14253279935af020ae206e8030e49e97ddd7bbfce2

General

Target

JaffaCakes118_5f1667cc07b5b10456ba5f14253279935af020ae206e8030e49e97ddd7bbfce2.exe
Size

761KB
MD5

e3e4f2700cbc9ff72c7dd11e6f60f791
SHA1

939b9755c8a76956d603f3f051d01358cd10f390
SHA256

5f1667cc07b5b10456ba5f14253279935af020ae206e8030e49e97ddd7bbfce2
SHA512

ff232d8179e11d31fa5d9acd774ccac8a3c79fee4659616bd5093ebe7505bd69793e068b94b7d43ebf99b29670f3d14dd3e813ecac39d7826ac8d4064b196b6d
SSDEEP

12288:LFY2aF53alBO33jvolgHLTrjgQGj9j77lOsIW/oUCdr3D6fGwAknnxkm:i2aiz6drvj1yZIsIso5rEzkm

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

C2

http://fuyt.org/fhsgtsspen6/get.php

Attributes

extension
.dmay
offline_id
Xe4NOamOTHZrARTiL9dfVzAylFrEWLGGbr2dngt1
payload_url
http://zerit.top/dl/build2.exe

http://fuyt.org/files/1/build3.exe
ransomnote
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rsa_pubkey.plain

Signatures

Detected Djvu ransomware 9 IoCs

resource	yara_rule
behavioral2/memory/4680-2-0x0000000002260000-0x000000000237B000-memory.dmp	family_djvu
behavioral2/memory/4848-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4848-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4848-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4848-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4848-17-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/212-24-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/212-21-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/212-22-0x0000000000400000-0x0000000000537000-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-1-5-21-2437139445-1151884604-3026847218-1000\Control Panel\International\Geo\Nation	JaffaCakes118_5f1667cc07b5b10456ba5f14253279935af020ae206e8030e49e97ddd7bbfce2.exe

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
1172	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-1-5-21-2437139445-1151884604-3026847218-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\44a7f844-9d52-4b31-a3da-25b367e3e72d\\JaffaCakes118_5f1667cc07b5b10456ba5f14253279935af020ae206e8030e49e97ddd7bbfce2.exe\" --AutoStart"	JaffaCakes118_5f1667cc07b5b10456ba5f14253279935af020ae206e8030e49e97ddd7bbfce2.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.

flow	ioc
12	api.2ip.ua
13	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 4680 set thread context of 4848	4680	JaffaCakes118_5f1667cc07b5b10456ba5f14253279935af020ae206e8030e49e97ddd7bbfce2.exe	84
PID 4344 set thread context of 212	4344	JaffaCakes118_5f1667cc07b5b10456ba5f14253279935af020ae206e8030e49e97ddd7bbfce2.exe	89

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

System Information Discovery
T1082

Program crash 1 IoCs

pid	pid_target	Process	procid_target
3300	212	WerFault.exe	89

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	JaffaCakes118_5f1667cc07b5b10456ba5f14253279935af020ae206e8030e49e97ddd7bbfce2.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_5f1667cc07b5b10456ba5f14253279935af020ae206e8030e49e97ddd7bbfce2.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_5f1667cc07b5b10456ba5f14253279935af020ae206e8030e49e97ddd7bbfce2.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_5f1667cc07b5b10456ba5f14253279935af020ae206e8030e49e97ddd7bbfce2.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	icacls.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4848	JaffaCakes118_5f1667cc07b5b10456ba5f14253279935af020ae206e8030e49e97ddd7bbfce2.exe
4848	JaffaCakes118_5f1667cc07b5b10456ba5f14253279935af020ae206e8030e49e97ddd7bbfce2.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 4680 wrote to memory of 4848	4680	JaffaCakes118_5f1667cc07b5b10456ba5f14253279935af020ae206e8030e49e97ddd7bbfce2.exe	84
PID 4680 wrote to memory of 4848	4680	JaffaCakes118_5f1667cc07b5b10456ba5f14253279935af020ae206e8030e49e97ddd7bbfce2.exe	84
PID 4680 wrote to memory of 4848	4680	JaffaCakes118_5f1667cc07b5b10456ba5f14253279935af020ae206e8030e49e97ddd7bbfce2.exe	84
PID 4680 wrote to memory of 4848	4680	JaffaCakes118_5f1667cc07b5b10456ba5f14253279935af020ae206e8030e49e97ddd7bbfce2.exe	84
PID 4680 wrote to memory of 4848	4680	JaffaCakes118_5f1667cc07b5b10456ba5f14253279935af020ae206e8030e49e97ddd7bbfce2.exe	84
PID 4680 wrote to memory of 4848	4680	JaffaCakes118_5f1667cc07b5b10456ba5f14253279935af020ae206e8030e49e97ddd7bbfce2.exe	84
PID 4680 wrote to memory of 4848	4680	JaffaCakes118_5f1667cc07b5b10456ba5f14253279935af020ae206e8030e49e97ddd7bbfce2.exe	84
PID 4680 wrote to memory of 4848	4680	JaffaCakes118_5f1667cc07b5b10456ba5f14253279935af020ae206e8030e49e97ddd7bbfce2.exe	84
PID 4680 wrote to memory of 4848	4680	JaffaCakes118_5f1667cc07b5b10456ba5f14253279935af020ae206e8030e49e97ddd7bbfce2.exe	84
PID 4680 wrote to memory of 4848	4680	JaffaCakes118_5f1667cc07b5b10456ba5f14253279935af020ae206e8030e49e97ddd7bbfce2.exe	84
PID 4848 wrote to memory of 1172	4848	JaffaCakes118_5f1667cc07b5b10456ba5f14253279935af020ae206e8030e49e97ddd7bbfce2.exe	85
PID 4848 wrote to memory of 1172	4848	JaffaCakes118_5f1667cc07b5b10456ba5f14253279935af020ae206e8030e49e97ddd7bbfce2.exe	85
PID 4848 wrote to memory of 1172	4848	JaffaCakes118_5f1667cc07b5b10456ba5f14253279935af020ae206e8030e49e97ddd7bbfce2.exe	85
PID 4848 wrote to memory of 4344	4848	JaffaCakes118_5f1667cc07b5b10456ba5f14253279935af020ae206e8030e49e97ddd7bbfce2.exe	86
PID 4848 wrote to memory of 4344	4848	JaffaCakes118_5f1667cc07b5b10456ba5f14253279935af020ae206e8030e49e97ddd7bbfce2.exe	86
PID 4848 wrote to memory of 4344	4848	JaffaCakes118_5f1667cc07b5b10456ba5f14253279935af020ae206e8030e49e97ddd7bbfce2.exe	86
PID 4344 wrote to memory of 212	4344	JaffaCakes118_5f1667cc07b5b10456ba5f14253279935af020ae206e8030e49e97ddd7bbfce2.exe	89
PID 4344 wrote to memory of 212	4344	JaffaCakes118_5f1667cc07b5b10456ba5f14253279935af020ae206e8030e49e97ddd7bbfce2.exe	89
PID 4344 wrote to memory of 212	4344	JaffaCakes118_5f1667cc07b5b10456ba5f14253279935af020ae206e8030e49e97ddd7bbfce2.exe	89
PID 4344 wrote to memory of 212	4344	JaffaCakes118_5f1667cc07b5b10456ba5f14253279935af020ae206e8030e49e97ddd7bbfce2.exe	89
PID 4344 wrote to memory of 212	4344	JaffaCakes118_5f1667cc07b5b10456ba5f14253279935af020ae206e8030e49e97ddd7bbfce2.exe	89
PID 4344 wrote to memory of 212	4344	JaffaCakes118_5f1667cc07b5b10456ba5f14253279935af020ae206e8030e49e97ddd7bbfce2.exe	89
PID 4344 wrote to memory of 212	4344	JaffaCakes118_5f1667cc07b5b10456ba5f14253279935af020ae206e8030e49e97ddd7bbfce2.exe	89
PID 4344 wrote to memory of 212	4344	JaffaCakes118_5f1667cc07b5b10456ba5f14253279935af020ae206e8030e49e97ddd7bbfce2.exe	89
PID 4344 wrote to memory of 212	4344	JaffaCakes118_5f1667cc07b5b10456ba5f14253279935af020ae206e8030e49e97ddd7bbfce2.exe	89
PID 4344 wrote to memory of 212	4344	JaffaCakes118_5f1667cc07b5b10456ba5f14253279935af020ae206e8030e49e97ddd7bbfce2.exe	89

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_5f1667cc07b5b10456ba5f14253279935af020ae206e8030e49e97ddd7bbfce2.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_5f1667cc07b5b10456ba5f14253279935af020ae206e8030e49e97ddd7bbfce2.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4680
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_5f1667cc07b5b10456ba5f14253279935af020ae206e8030e49e97ddd7bbfce2.exe
  "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_5f1667cc07b5b10456ba5f14253279935af020ae206e8030e49e97ddd7bbfce2.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:4848
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\44a7f844-9d52-4b31-a3da-25b367e3e72d" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    - System Location Discovery: System Language Discovery
    PID:1172
- - C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_5f1667cc07b5b10456ba5f14253279935af020ae206e8030e49e97ddd7bbfce2.exe
    "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_5f1667cc07b5b10456ba5f14253279935af020ae206e8030e49e97ddd7bbfce2.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:4344
  - - C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_5f1667cc07b5b10456ba5f14253279935af020ae206e8030e49e97ddd7bbfce2.exe
      "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_5f1667cc07b5b10456ba5f14253279935af020ae206e8030e49e97ddd7bbfce2.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      System Location Discovery: System Language Discovery
      PID:212
    - - C:\Windows\SysWOW64\WerFault.exe
        
        C:\Windows\SysWOW64\WerFault.exe -u -p 212 -s 572
        5⤵
        Program crash
        
        PID:3300

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 212 -ip 212
1⤵
PID:3240

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\Local\44a7f844-9d52-4b31-a3da-25b367e3e72d\JaffaCakes118_5f1667cc07b5b10456ba5f14253279935af020ae206e8030e49e97ddd7bbfce2.exe

Filesize
761KB

MD5
e3e4f2700cbc9ff72c7dd11e6f60f791

SHA1
939b9755c8a76956d603f3f051d01358cd10f390

SHA256
5f1667cc07b5b10456ba5f14253279935af020ae206e8030e49e97ddd7bbfce2

SHA512
ff232d8179e11d31fa5d9acd774ccac8a3c79fee4659616bd5093ebe7505bd69793e068b94b7d43ebf99b29670f3d14dd3e813ecac39d7826ac8d4064b196b6d

Download Submit
memory/212-24-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/212-21-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/212-22-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4344-19-0x0000000000400000-0x00000000004C8000-memory.dmp

Filesize
800KB

Download
memory/4344-25-0x0000000000400000-0x00000000004C8000-memory.dmp

Filesize
800KB

Download
memory/4680-2-0x0000000002260000-0x000000000237B000-memory.dmp

Filesize
1.1MB

Download
memory/4680-1-0x00000000021C0000-0x0000000002255000-memory.dmp

Filesize
596KB

Download
memory/4848-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4848-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4848-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4848-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4848-17-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads