djvu | 1992f264f1bf5d0ff3e3ca09f45f3b157a88ef907d80a239d0e52b63d1c8fefd

General

Target

JaffaCakes118_1992f264f1bf5d0ff3e3ca09f45f3b157a88ef907d80a239d0e52b63d1c8fefd.exe
Size

726KB
MD5

bd8348f257f944a8370b288dfbfdf82b
SHA1

afe3563b6c144d1ecff4e6cafba729eb95ad1d02
SHA256

1992f264f1bf5d0ff3e3ca09f45f3b157a88ef907d80a239d0e52b63d1c8fefd
SHA512

28a6559b22323bc9bf890908faa20891cddae2412aabf5605510c45196c801c113cbacadc6a5cabf2fbaeb9dd99d163fa6344cb60c87da01a18c8d39f3b0f69a
SSDEEP

12288:3su6/9Myyx1urAWWfinD5jwJtIATwvnEx9oQpG43g1O5s5FHiHLiqv1CrDc:3st/9jyx1urAWWfinDKJVTkw9DfcAMfc

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/4948-2-0x0000000002350000-0x000000000246B000-memory.dmp	family_djvu
behavioral2/memory/4000-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4000-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4000-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4000-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4000-17-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3152-22-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3152-24-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3152-21-0x0000000000400000-0x0000000000537000-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_1992f264f1bf5d0ff3e3ca09f45f3b157a88ef907d80a239d0e52b63d1c8fefd.exe

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
528	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\\8e752e22-0b27-458f-8a95-2d806d8d0e64\\JaffaCakes118_1992f264f1bf5d0ff3e3ca09f45f3b157a88ef907d80a239d0e52b63d1c8fefd.exe\" --AutoStart"	JaffaCakes118_1992f264f1bf5d0ff3e3ca09f45f3b157a88ef907d80a239d0e52b63d1c8fefd.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
10	api.2ip.ua
11	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 4948 set thread context of 4000	4948	JaffaCakes118_1992f264f1bf5d0ff3e3ca09f45f3b157a88ef907d80a239d0e52b63d1c8fefd.exe	83
PID 4044 set thread context of 3152	4044	JaffaCakes118_1992f264f1bf5d0ff3e3ca09f45f3b157a88ef907d80a239d0e52b63d1c8fefd.exe	88

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
3500	3152	WerFault.exe	88

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_1992f264f1bf5d0ff3e3ca09f45f3b157a88ef907d80a239d0e52b63d1c8fefd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	icacls.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_1992f264f1bf5d0ff3e3ca09f45f3b157a88ef907d80a239d0e52b63d1c8fefd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_1992f264f1bf5d0ff3e3ca09f45f3b157a88ef907d80a239d0e52b63d1c8fefd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_1992f264f1bf5d0ff3e3ca09f45f3b157a88ef907d80a239d0e52b63d1c8fefd.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4000	JaffaCakes118_1992f264f1bf5d0ff3e3ca09f45f3b157a88ef907d80a239d0e52b63d1c8fefd.exe
4000	JaffaCakes118_1992f264f1bf5d0ff3e3ca09f45f3b157a88ef907d80a239d0e52b63d1c8fefd.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 4948 wrote to memory of 4000	4948	JaffaCakes118_1992f264f1bf5d0ff3e3ca09f45f3b157a88ef907d80a239d0e52b63d1c8fefd.exe	83
PID 4948 wrote to memory of 4000	4948	JaffaCakes118_1992f264f1bf5d0ff3e3ca09f45f3b157a88ef907d80a239d0e52b63d1c8fefd.exe	83
PID 4948 wrote to memory of 4000	4948	JaffaCakes118_1992f264f1bf5d0ff3e3ca09f45f3b157a88ef907d80a239d0e52b63d1c8fefd.exe	83
PID 4948 wrote to memory of 4000	4948	JaffaCakes118_1992f264f1bf5d0ff3e3ca09f45f3b157a88ef907d80a239d0e52b63d1c8fefd.exe	83
PID 4948 wrote to memory of 4000	4948	JaffaCakes118_1992f264f1bf5d0ff3e3ca09f45f3b157a88ef907d80a239d0e52b63d1c8fefd.exe	83
PID 4948 wrote to memory of 4000	4948	JaffaCakes118_1992f264f1bf5d0ff3e3ca09f45f3b157a88ef907d80a239d0e52b63d1c8fefd.exe	83
PID 4948 wrote to memory of 4000	4948	JaffaCakes118_1992f264f1bf5d0ff3e3ca09f45f3b157a88ef907d80a239d0e52b63d1c8fefd.exe	83
PID 4948 wrote to memory of 4000	4948	JaffaCakes118_1992f264f1bf5d0ff3e3ca09f45f3b157a88ef907d80a239d0e52b63d1c8fefd.exe	83
PID 4948 wrote to memory of 4000	4948	JaffaCakes118_1992f264f1bf5d0ff3e3ca09f45f3b157a88ef907d80a239d0e52b63d1c8fefd.exe	83
PID 4948 wrote to memory of 4000	4948	JaffaCakes118_1992f264f1bf5d0ff3e3ca09f45f3b157a88ef907d80a239d0e52b63d1c8fefd.exe	83
PID 4000 wrote to memory of 528	4000	JaffaCakes118_1992f264f1bf5d0ff3e3ca09f45f3b157a88ef907d80a239d0e52b63d1c8fefd.exe	84
PID 4000 wrote to memory of 528	4000	JaffaCakes118_1992f264f1bf5d0ff3e3ca09f45f3b157a88ef907d80a239d0e52b63d1c8fefd.exe	84
PID 4000 wrote to memory of 528	4000	JaffaCakes118_1992f264f1bf5d0ff3e3ca09f45f3b157a88ef907d80a239d0e52b63d1c8fefd.exe	84
PID 4000 wrote to memory of 4044	4000	JaffaCakes118_1992f264f1bf5d0ff3e3ca09f45f3b157a88ef907d80a239d0e52b63d1c8fefd.exe	85
PID 4000 wrote to memory of 4044	4000	JaffaCakes118_1992f264f1bf5d0ff3e3ca09f45f3b157a88ef907d80a239d0e52b63d1c8fefd.exe	85
PID 4000 wrote to memory of 4044	4000	JaffaCakes118_1992f264f1bf5d0ff3e3ca09f45f3b157a88ef907d80a239d0e52b63d1c8fefd.exe	85
PID 4044 wrote to memory of 3152	4044	JaffaCakes118_1992f264f1bf5d0ff3e3ca09f45f3b157a88ef907d80a239d0e52b63d1c8fefd.exe	88
PID 4044 wrote to memory of 3152	4044	JaffaCakes118_1992f264f1bf5d0ff3e3ca09f45f3b157a88ef907d80a239d0e52b63d1c8fefd.exe	88
PID 4044 wrote to memory of 3152	4044	JaffaCakes118_1992f264f1bf5d0ff3e3ca09f45f3b157a88ef907d80a239d0e52b63d1c8fefd.exe	88
PID 4044 wrote to memory of 3152	4044	JaffaCakes118_1992f264f1bf5d0ff3e3ca09f45f3b157a88ef907d80a239d0e52b63d1c8fefd.exe	88
PID 4044 wrote to memory of 3152	4044	JaffaCakes118_1992f264f1bf5d0ff3e3ca09f45f3b157a88ef907d80a239d0e52b63d1c8fefd.exe	88
PID 4044 wrote to memory of 3152	4044	JaffaCakes118_1992f264f1bf5d0ff3e3ca09f45f3b157a88ef907d80a239d0e52b63d1c8fefd.exe	88
PID 4044 wrote to memory of 3152	4044	JaffaCakes118_1992f264f1bf5d0ff3e3ca09f45f3b157a88ef907d80a239d0e52b63d1c8fefd.exe	88
PID 4044 wrote to memory of 3152	4044	JaffaCakes118_1992f264f1bf5d0ff3e3ca09f45f3b157a88ef907d80a239d0e52b63d1c8fefd.exe	88
PID 4044 wrote to memory of 3152	4044	JaffaCakes118_1992f264f1bf5d0ff3e3ca09f45f3b157a88ef907d80a239d0e52b63d1c8fefd.exe	88
PID 4044 wrote to memory of 3152	4044	JaffaCakes118_1992f264f1bf5d0ff3e3ca09f45f3b157a88ef907d80a239d0e52b63d1c8fefd.exe	88

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_1992f264f1bf5d0ff3e3ca09f45f3b157a88ef907d80a239d0e52b63d1c8fefd.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_1992f264f1bf5d0ff3e3ca09f45f3b157a88ef907d80a239d0e52b63d1c8fefd.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4948
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_1992f264f1bf5d0ff3e3ca09f45f3b157a88ef907d80a239d0e52b63d1c8fefd.exe
  "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_1992f264f1bf5d0ff3e3ca09f45f3b157a88ef907d80a239d0e52b63d1c8fefd.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:4000
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\8e752e22-0b27-458f-8a95-2d806d8d0e64" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    - System Location Discovery: System Language Discovery
    PID:528
- - C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_1992f264f1bf5d0ff3e3ca09f45f3b157a88ef907d80a239d0e52b63d1c8fefd.exe
    "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_1992f264f1bf5d0ff3e3ca09f45f3b157a88ef907d80a239d0e52b63d1c8fefd.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:4044
  - - C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_1992f264f1bf5d0ff3e3ca09f45f3b157a88ef907d80a239d0e52b63d1c8fefd.exe
      "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_1992f264f1bf5d0ff3e3ca09f45f3b157a88ef907d80a239d0e52b63d1c8fefd.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      System Location Discovery: System Language Discovery
      PID:3152
    - - C:\Windows\SysWOW64\WerFault.exe
        
        C:\Windows\SysWOW64\WerFault.exe -u -p 3152 -s 584
        5⤵
        Program crash
        
        PID:3500

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 3152 -ip 3152
1⤵
PID:1920

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\8e752e22-0b27-458f-8a95-2d806d8d0e64\JaffaCakes118_1992f264f1bf5d0ff3e3ca09f45f3b157a88ef907d80a239d0e52b63d1c8fefd.exe

Filesize
726KB

MD5
bd8348f257f944a8370b288dfbfdf82b

SHA1
afe3563b6c144d1ecff4e6cafba729eb95ad1d02

SHA256
1992f264f1bf5d0ff3e3ca09f45f3b157a88ef907d80a239d0e52b63d1c8fefd

SHA512
28a6559b22323bc9bf890908faa20891cddae2412aabf5605510c45196c801c113cbacadc6a5cabf2fbaeb9dd99d163fa6344cb60c87da01a18c8d39f3b0f69a

Download Submit
memory/3152-22-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3152-24-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3152-21-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4000-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4000-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4000-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4000-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4000-17-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4044-19-0x0000000000400000-0x00000000004BF000-memory.dmp

Filesize
764KB

Download
memory/4044-25-0x0000000000400000-0x00000000004BF000-memory.dmp

Filesize
764KB

Download
memory/4948-2-0x0000000002350000-0x000000000246B000-memory.dmp

Filesize
1.1MB

Download
memory/4948-1-0x0000000000A20000-0x0000000000ABC000-memory.dmp

Filesize
624KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads