djvu | 7081c7516836c80e7a92b35dc455ed24e79c1492ae1963c721e499f4af325e70

General

Target

JaffaCakes118_7081c7516836c80e7a92b35dc455ed24e79c1492ae1963c721e499f4af325e70.exe
Size

761KB
MD5

00fdc50a5812e1dfe7bf314e81b86de5
SHA1

e57d21a00c4af2ddfbb7b26d607076a7853e2b7a
SHA256

7081c7516836c80e7a92b35dc455ed24e79c1492ae1963c721e499f4af325e70
SHA512

12a468c1c072c38e8d37d77449491bd190d73af24d0109f271ec4ae93a25623190c756df29b30d0433812180200c549f3e17e6e7346fda015d2ab0ee4bea0e34
SSDEEP

12288:xYHgevleClc4TlC9i05w3+zCKc3eTlfbeevTYCPjcgemwKVA:c9vsClhlwb5pCluR6mT7cge8

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/548-2-0x00000000022E0000-0x00000000023FB000-memory.dmp	family_djvu
behavioral2/memory/2656-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2656-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2656-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2656-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2656-17-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1088-21-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1088-24-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1088-22-0x0000000000400000-0x0000000000537000-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_7081c7516836c80e7a92b35dc455ed24e79c1492ae1963c721e499f4af325e70.exe

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
3984	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\\b5b6c25c-d72f-42c5-816e-f4fd29823859\\JaffaCakes118_7081c7516836c80e7a92b35dc455ed24e79c1492ae1963c721e499f4af325e70.exe\" --AutoStart"	JaffaCakes118_7081c7516836c80e7a92b35dc455ed24e79c1492ae1963c721e499f4af325e70.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
15	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 548 set thread context of 2656	548	JaffaCakes118_7081c7516836c80e7a92b35dc455ed24e79c1492ae1963c721e499f4af325e70.exe	83
PID 1716 set thread context of 1088	1716	JaffaCakes118_7081c7516836c80e7a92b35dc455ed24e79c1492ae1963c721e499f4af325e70.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
2560	1088	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_7081c7516836c80e7a92b35dc455ed24e79c1492ae1963c721e499f4af325e70.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_7081c7516836c80e7a92b35dc455ed24e79c1492ae1963c721e499f4af325e70.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	icacls.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_7081c7516836c80e7a92b35dc455ed24e79c1492ae1963c721e499f4af325e70.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_7081c7516836c80e7a92b35dc455ed24e79c1492ae1963c721e499f4af325e70.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2656	JaffaCakes118_7081c7516836c80e7a92b35dc455ed24e79c1492ae1963c721e499f4af325e70.exe
2656	JaffaCakes118_7081c7516836c80e7a92b35dc455ed24e79c1492ae1963c721e499f4af325e70.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 548 wrote to memory of 2656	548	JaffaCakes118_7081c7516836c80e7a92b35dc455ed24e79c1492ae1963c721e499f4af325e70.exe	83
PID 548 wrote to memory of 2656	548	JaffaCakes118_7081c7516836c80e7a92b35dc455ed24e79c1492ae1963c721e499f4af325e70.exe	83
PID 548 wrote to memory of 2656	548	JaffaCakes118_7081c7516836c80e7a92b35dc455ed24e79c1492ae1963c721e499f4af325e70.exe	83
PID 548 wrote to memory of 2656	548	JaffaCakes118_7081c7516836c80e7a92b35dc455ed24e79c1492ae1963c721e499f4af325e70.exe	83
PID 548 wrote to memory of 2656	548	JaffaCakes118_7081c7516836c80e7a92b35dc455ed24e79c1492ae1963c721e499f4af325e70.exe	83
PID 548 wrote to memory of 2656	548	JaffaCakes118_7081c7516836c80e7a92b35dc455ed24e79c1492ae1963c721e499f4af325e70.exe	83
PID 548 wrote to memory of 2656	548	JaffaCakes118_7081c7516836c80e7a92b35dc455ed24e79c1492ae1963c721e499f4af325e70.exe	83
PID 548 wrote to memory of 2656	548	JaffaCakes118_7081c7516836c80e7a92b35dc455ed24e79c1492ae1963c721e499f4af325e70.exe	83
PID 548 wrote to memory of 2656	548	JaffaCakes118_7081c7516836c80e7a92b35dc455ed24e79c1492ae1963c721e499f4af325e70.exe	83
PID 548 wrote to memory of 2656	548	JaffaCakes118_7081c7516836c80e7a92b35dc455ed24e79c1492ae1963c721e499f4af325e70.exe	83
PID 2656 wrote to memory of 3984	2656	JaffaCakes118_7081c7516836c80e7a92b35dc455ed24e79c1492ae1963c721e499f4af325e70.exe	84
PID 2656 wrote to memory of 3984	2656	JaffaCakes118_7081c7516836c80e7a92b35dc455ed24e79c1492ae1963c721e499f4af325e70.exe	84
PID 2656 wrote to memory of 3984	2656	JaffaCakes118_7081c7516836c80e7a92b35dc455ed24e79c1492ae1963c721e499f4af325e70.exe	84
PID 2656 wrote to memory of 1716	2656	JaffaCakes118_7081c7516836c80e7a92b35dc455ed24e79c1492ae1963c721e499f4af325e70.exe	86
PID 2656 wrote to memory of 1716	2656	JaffaCakes118_7081c7516836c80e7a92b35dc455ed24e79c1492ae1963c721e499f4af325e70.exe	86
PID 2656 wrote to memory of 1716	2656	JaffaCakes118_7081c7516836c80e7a92b35dc455ed24e79c1492ae1963c721e499f4af325e70.exe	86
PID 1716 wrote to memory of 1088	1716	JaffaCakes118_7081c7516836c80e7a92b35dc455ed24e79c1492ae1963c721e499f4af325e70.exe	89
PID 1716 wrote to memory of 1088	1716	JaffaCakes118_7081c7516836c80e7a92b35dc455ed24e79c1492ae1963c721e499f4af325e70.exe	89
PID 1716 wrote to memory of 1088	1716	JaffaCakes118_7081c7516836c80e7a92b35dc455ed24e79c1492ae1963c721e499f4af325e70.exe	89
PID 1716 wrote to memory of 1088	1716	JaffaCakes118_7081c7516836c80e7a92b35dc455ed24e79c1492ae1963c721e499f4af325e70.exe	89
PID 1716 wrote to memory of 1088	1716	JaffaCakes118_7081c7516836c80e7a92b35dc455ed24e79c1492ae1963c721e499f4af325e70.exe	89
PID 1716 wrote to memory of 1088	1716	JaffaCakes118_7081c7516836c80e7a92b35dc455ed24e79c1492ae1963c721e499f4af325e70.exe	89
PID 1716 wrote to memory of 1088	1716	JaffaCakes118_7081c7516836c80e7a92b35dc455ed24e79c1492ae1963c721e499f4af325e70.exe	89
PID 1716 wrote to memory of 1088	1716	JaffaCakes118_7081c7516836c80e7a92b35dc455ed24e79c1492ae1963c721e499f4af325e70.exe	89
PID 1716 wrote to memory of 1088	1716	JaffaCakes118_7081c7516836c80e7a92b35dc455ed24e79c1492ae1963c721e499f4af325e70.exe	89
PID 1716 wrote to memory of 1088	1716	JaffaCakes118_7081c7516836c80e7a92b35dc455ed24e79c1492ae1963c721e499f4af325e70.exe	89

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_7081c7516836c80e7a92b35dc455ed24e79c1492ae1963c721e499f4af325e70.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_7081c7516836c80e7a92b35dc455ed24e79c1492ae1963c721e499f4af325e70.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:548
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_7081c7516836c80e7a92b35dc455ed24e79c1492ae1963c721e499f4af325e70.exe
  "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_7081c7516836c80e7a92b35dc455ed24e79c1492ae1963c721e499f4af325e70.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:2656
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\b5b6c25c-d72f-42c5-816e-f4fd29823859" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    - System Location Discovery: System Language Discovery
    PID:3984
- - C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_7081c7516836c80e7a92b35dc455ed24e79c1492ae1963c721e499f4af325e70.exe
    "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_7081c7516836c80e7a92b35dc455ed24e79c1492ae1963c721e499f4af325e70.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:1716
  - - C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_7081c7516836c80e7a92b35dc455ed24e79c1492ae1963c721e499f4af325e70.exe
      "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_7081c7516836c80e7a92b35dc455ed24e79c1492ae1963c721e499f4af325e70.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      System Location Discovery: System Language Discovery
      PID:1088
    - - C:\Windows\SysWOW64\WerFault.exe
        
        C:\Windows\SysWOW64\WerFault.exe -u -p 1088 -s 568
        5⤵
        Program crash
        
        PID:2560

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 368 -p 1088 -ip 1088
1⤵
PID:4852

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\b5b6c25c-d72f-42c5-816e-f4fd29823859\JaffaCakes118_7081c7516836c80e7a92b35dc455ed24e79c1492ae1963c721e499f4af325e70.exe

Filesize
761KB

MD5
00fdc50a5812e1dfe7bf314e81b86de5

SHA1
e57d21a00c4af2ddfbb7b26d607076a7853e2b7a

SHA256
7081c7516836c80e7a92b35dc455ed24e79c1492ae1963c721e499f4af325e70

SHA512
12a468c1c072c38e8d37d77449491bd190d73af24d0109f271ec4ae93a25623190c756df29b30d0433812180200c549f3e17e6e7346fda015d2ab0ee4bea0e34

Download Submit
memory/548-2-0x00000000022E0000-0x00000000023FB000-memory.dmp

Filesize
1.1MB

Download
memory/548-1-0x0000000002240000-0x00000000022D4000-memory.dmp

Filesize
592KB

Download
memory/1088-21-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1088-24-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1088-22-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1716-19-0x0000000000400000-0x00000000004C8000-memory.dmp

Filesize
800KB

Download
memory/1716-25-0x0000000000400000-0x00000000004C8000-memory.dmp

Filesize
800KB

Download
memory/2656-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2656-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2656-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2656-17-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2656-3-0x0000000000400000-0x0000000000537000-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