djvu | 5488516832a0c637c9144a81ccf59260ab0be3606b8779775f5dd97f74768a97

General

Target

JaffaCakes118_5488516832a0c637c9144a81ccf59260ab0be3606b8779775f5dd97f74768a97.exe
Size

785KB
MD5

6ef183914d16f33759b84698c23078c5
SHA1

485346b5c50d069ebfc24a0ddbd5e8bcaf1deeff
SHA256

5488516832a0c637c9144a81ccf59260ab0be3606b8779775f5dd97f74768a97
SHA512

d113f446a49313be0574cd7efb1a846acbb024a114c0e7ddaad0f88fb5e4ee726838cf1983bd2898b9a69dd8d07f8adb5355e8a7a3c3a52f63d62c7f559efdf6
SSDEEP

12288:QWByVEFguitYLOfxgPqsen9tDaozRWDySTUrtBQawB/nH6r6ii9PjiAaf:9LgnuS0e94o48Ma6H6rK9PjiA

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

C2

http://fuyt.org/test1/get.php

Attributes

extension
.ghas
offline_id
miqhSGmGE63yWs53FTz0fnp8eCARpnaYE3O3p2t1
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/2156-2-0x0000000002260000-0x000000000237B000-memory.dmp	family_djvu
behavioral2/memory/5052-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/5052-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/5052-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/5052-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/5052-17-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1812-24-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1812-23-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1812-21-0x0000000000400000-0x0000000000537000-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-1-5-21-2045521122-590294423-3465680274-1000\Control Panel\International\Geo\Nation	JaffaCakes118_5488516832a0c637c9144a81ccf59260ab0be3606b8779775f5dd97f74768a97.exe

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
3044	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-1-5-21-2045521122-590294423-3465680274-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\adf2de45-730e-4c33-9335-52144c207958\\JaffaCakes118_5488516832a0c637c9144a81ccf59260ab0be3606b8779775f5dd97f74768a97.exe\" --AutoStart"	JaffaCakes118_5488516832a0c637c9144a81ccf59260ab0be3606b8779775f5dd97f74768a97.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
5	api.2ip.ua
6	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 2156 set thread context of 5052	2156	JaffaCakes118_5488516832a0c637c9144a81ccf59260ab0be3606b8779775f5dd97f74768a97.exe	83
PID 1508 set thread context of 1812	1508	JaffaCakes118_5488516832a0c637c9144a81ccf59260ab0be3606b8779775f5dd97f74768a97.exe	87

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
4884	1812	WerFault.exe	87

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_5488516832a0c637c9144a81ccf59260ab0be3606b8779775f5dd97f74768a97.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	icacls.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_5488516832a0c637c9144a81ccf59260ab0be3606b8779775f5dd97f74768a97.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_5488516832a0c637c9144a81ccf59260ab0be3606b8779775f5dd97f74768a97.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_5488516832a0c637c9144a81ccf59260ab0be3606b8779775f5dd97f74768a97.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
5052	JaffaCakes118_5488516832a0c637c9144a81ccf59260ab0be3606b8779775f5dd97f74768a97.exe
5052	JaffaCakes118_5488516832a0c637c9144a81ccf59260ab0be3606b8779775f5dd97f74768a97.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 2156 wrote to memory of 5052	2156	JaffaCakes118_5488516832a0c637c9144a81ccf59260ab0be3606b8779775f5dd97f74768a97.exe	83
PID 2156 wrote to memory of 5052	2156	JaffaCakes118_5488516832a0c637c9144a81ccf59260ab0be3606b8779775f5dd97f74768a97.exe	83
PID 2156 wrote to memory of 5052	2156	JaffaCakes118_5488516832a0c637c9144a81ccf59260ab0be3606b8779775f5dd97f74768a97.exe	83
PID 2156 wrote to memory of 5052	2156	JaffaCakes118_5488516832a0c637c9144a81ccf59260ab0be3606b8779775f5dd97f74768a97.exe	83
PID 2156 wrote to memory of 5052	2156	JaffaCakes118_5488516832a0c637c9144a81ccf59260ab0be3606b8779775f5dd97f74768a97.exe	83
PID 2156 wrote to memory of 5052	2156	JaffaCakes118_5488516832a0c637c9144a81ccf59260ab0be3606b8779775f5dd97f74768a97.exe	83
PID 2156 wrote to memory of 5052	2156	JaffaCakes118_5488516832a0c637c9144a81ccf59260ab0be3606b8779775f5dd97f74768a97.exe	83
PID 2156 wrote to memory of 5052	2156	JaffaCakes118_5488516832a0c637c9144a81ccf59260ab0be3606b8779775f5dd97f74768a97.exe	83
PID 2156 wrote to memory of 5052	2156	JaffaCakes118_5488516832a0c637c9144a81ccf59260ab0be3606b8779775f5dd97f74768a97.exe	83
PID 2156 wrote to memory of 5052	2156	JaffaCakes118_5488516832a0c637c9144a81ccf59260ab0be3606b8779775f5dd97f74768a97.exe	83
PID 5052 wrote to memory of 3044	5052	JaffaCakes118_5488516832a0c637c9144a81ccf59260ab0be3606b8779775f5dd97f74768a97.exe	84
PID 5052 wrote to memory of 3044	5052	JaffaCakes118_5488516832a0c637c9144a81ccf59260ab0be3606b8779775f5dd97f74768a97.exe	84
PID 5052 wrote to memory of 3044	5052	JaffaCakes118_5488516832a0c637c9144a81ccf59260ab0be3606b8779775f5dd97f74768a97.exe	84
PID 5052 wrote to memory of 1508	5052	JaffaCakes118_5488516832a0c637c9144a81ccf59260ab0be3606b8779775f5dd97f74768a97.exe	85
PID 5052 wrote to memory of 1508	5052	JaffaCakes118_5488516832a0c637c9144a81ccf59260ab0be3606b8779775f5dd97f74768a97.exe	85
PID 5052 wrote to memory of 1508	5052	JaffaCakes118_5488516832a0c637c9144a81ccf59260ab0be3606b8779775f5dd97f74768a97.exe	85
PID 1508 wrote to memory of 1812	1508	JaffaCakes118_5488516832a0c637c9144a81ccf59260ab0be3606b8779775f5dd97f74768a97.exe	87
PID 1508 wrote to memory of 1812	1508	JaffaCakes118_5488516832a0c637c9144a81ccf59260ab0be3606b8779775f5dd97f74768a97.exe	87
PID 1508 wrote to memory of 1812	1508	JaffaCakes118_5488516832a0c637c9144a81ccf59260ab0be3606b8779775f5dd97f74768a97.exe	87
PID 1508 wrote to memory of 1812	1508	JaffaCakes118_5488516832a0c637c9144a81ccf59260ab0be3606b8779775f5dd97f74768a97.exe	87
PID 1508 wrote to memory of 1812	1508	JaffaCakes118_5488516832a0c637c9144a81ccf59260ab0be3606b8779775f5dd97f74768a97.exe	87
PID 1508 wrote to memory of 1812	1508	JaffaCakes118_5488516832a0c637c9144a81ccf59260ab0be3606b8779775f5dd97f74768a97.exe	87
PID 1508 wrote to memory of 1812	1508	JaffaCakes118_5488516832a0c637c9144a81ccf59260ab0be3606b8779775f5dd97f74768a97.exe	87
PID 1508 wrote to memory of 1812	1508	JaffaCakes118_5488516832a0c637c9144a81ccf59260ab0be3606b8779775f5dd97f74768a97.exe	87
PID 1508 wrote to memory of 1812	1508	JaffaCakes118_5488516832a0c637c9144a81ccf59260ab0be3606b8779775f5dd97f74768a97.exe	87
PID 1508 wrote to memory of 1812	1508	JaffaCakes118_5488516832a0c637c9144a81ccf59260ab0be3606b8779775f5dd97f74768a97.exe	87

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_5488516832a0c637c9144a81ccf59260ab0be3606b8779775f5dd97f74768a97.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_5488516832a0c637c9144a81ccf59260ab0be3606b8779775f5dd97f74768a97.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2156
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_5488516832a0c637c9144a81ccf59260ab0be3606b8779775f5dd97f74768a97.exe
  "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_5488516832a0c637c9144a81ccf59260ab0be3606b8779775f5dd97f74768a97.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:5052
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\adf2de45-730e-4c33-9335-52144c207958" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    - System Location Discovery: System Language Discovery
    PID:3044
- - C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_5488516832a0c637c9144a81ccf59260ab0be3606b8779775f5dd97f74768a97.exe
    "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_5488516832a0c637c9144a81ccf59260ab0be3606b8779775f5dd97f74768a97.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:1508
  - - C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_5488516832a0c637c9144a81ccf59260ab0be3606b8779775f5dd97f74768a97.exe
      "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_5488516832a0c637c9144a81ccf59260ab0be3606b8779775f5dd97f74768a97.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      System Location Discovery: System Language Discovery
      PID:1812
    - - C:\Windows\SysWOW64\WerFault.exe
        
        C:\Windows\SysWOW64\WerFault.exe -u -p 1812 -s 228
        5⤵
        Program crash
        
        PID:4884

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 1812 -ip 1812
1⤵
PID:2424

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\adf2de45-730e-4c33-9335-52144c207958\JaffaCakes118_5488516832a0c637c9144a81ccf59260ab0be3606b8779775f5dd97f74768a97.exe

Filesize
785KB

MD5
6ef183914d16f33759b84698c23078c5

SHA1
485346b5c50d069ebfc24a0ddbd5e8bcaf1deeff

SHA256
5488516832a0c637c9144a81ccf59260ab0be3606b8779775f5dd97f74768a97

SHA512
d113f446a49313be0574cd7efb1a846acbb024a114c0e7ddaad0f88fb5e4ee726838cf1983bd2898b9a69dd8d07f8adb5355e8a7a3c3a52f63d62c7f559efdf6

Download Submit
memory/1508-25-0x0000000000400000-0x00000000004EC000-memory.dmp

Filesize
944KB

Download
memory/1508-19-0x0000000000400000-0x00000000004EC000-memory.dmp

Filesize
944KB

Download
memory/1812-24-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1812-23-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1812-21-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2156-2-0x0000000002260000-0x000000000237B000-memory.dmp

Filesize
1.1MB

Download
memory/2156-1-0x0000000000630000-0x00000000006C7000-memory.dmp

Filesize
604KB

Download
memory/5052-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/5052-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/5052-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/5052-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/5052-17-0x0000000000400000-0x0000000000537000-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