djvu | ca8dbe608ea69a368a18072c6ce017d616ea6f493dccdde7ebe1fd8a48f9c437

General

Target

JaffaCakes118_ca8dbe608ea69a368a18072c6ce017d616ea6f493dccdde7ebe1fd8a48f9c437.exe
Size

768KB
MD5

63710d0aaf89298af47b923a6f5fd44b
SHA1

e92e69998126855eb1ea95eac54dcceea55df928
SHA256

ca8dbe608ea69a368a18072c6ce017d616ea6f493dccdde7ebe1fd8a48f9c437
SHA512

df222d9f140da27f5e29e2023c29d6ca8ac3489d52f8ac211da3be858f4fd66cf9b43968c54ab19a82eb507c3fba31e6086eb55b0fbc9ec0751c728d850c16bc
SSDEEP

12288:CHvzsuOeL2yN+eVJXqvKjMeY97dbKzBTar18Dq/HdHRk40AdrFyUuG0PqpyLt:CsuOcHCvKjMNBWNyHmBkuw4

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

C2

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

Attributes

extension
.nuhb
offline_id
PfLhykvDxmCghCq8peuxBtQ3c0QBuANi8WUkuet1
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/5040-2-0x0000000002370000-0x000000000248B000-memory.dmp	family_djvu
behavioral2/memory/4804-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4804-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4804-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4804-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4804-17-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4072-25-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4072-23-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4072-21-0x0000000000400000-0x0000000000537000-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-1-5-21-3442511616-637977696-3186306149-1000\Control Panel\International\Geo\Nation	JaffaCakes118_ca8dbe608ea69a368a18072c6ce017d616ea6f493dccdde7ebe1fd8a48f9c437.exe

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
1560	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-1-5-21-3442511616-637977696-3186306149-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\1a68ac27-cb97-44c0-b862-0e44d8b1d361\\JaffaCakes118_ca8dbe608ea69a368a18072c6ce017d616ea6f493dccdde7ebe1fd8a48f9c437.exe\" --AutoStart"	JaffaCakes118_ca8dbe608ea69a368a18072c6ce017d616ea6f493dccdde7ebe1fd8a48f9c437.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
7	api.2ip.ua
8	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 5040 set thread context of 4804	5040	JaffaCakes118_ca8dbe608ea69a368a18072c6ce017d616ea6f493dccdde7ebe1fd8a48f9c437.exe	82
PID 2064 set thread context of 4072	2064	JaffaCakes118_ca8dbe608ea69a368a18072c6ce017d616ea6f493dccdde7ebe1fd8a48f9c437.exe	86

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
3348	4072	WerFault.exe	86

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	icacls.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_ca8dbe608ea69a368a18072c6ce017d616ea6f493dccdde7ebe1fd8a48f9c437.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_ca8dbe608ea69a368a18072c6ce017d616ea6f493dccdde7ebe1fd8a48f9c437.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_ca8dbe608ea69a368a18072c6ce017d616ea6f493dccdde7ebe1fd8a48f9c437.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_ca8dbe608ea69a368a18072c6ce017d616ea6f493dccdde7ebe1fd8a48f9c437.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4804	JaffaCakes118_ca8dbe608ea69a368a18072c6ce017d616ea6f493dccdde7ebe1fd8a48f9c437.exe
4804	JaffaCakes118_ca8dbe608ea69a368a18072c6ce017d616ea6f493dccdde7ebe1fd8a48f9c437.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 5040 wrote to memory of 4804	5040	JaffaCakes118_ca8dbe608ea69a368a18072c6ce017d616ea6f493dccdde7ebe1fd8a48f9c437.exe	82
PID 5040 wrote to memory of 4804	5040	JaffaCakes118_ca8dbe608ea69a368a18072c6ce017d616ea6f493dccdde7ebe1fd8a48f9c437.exe	82
PID 5040 wrote to memory of 4804	5040	JaffaCakes118_ca8dbe608ea69a368a18072c6ce017d616ea6f493dccdde7ebe1fd8a48f9c437.exe	82
PID 5040 wrote to memory of 4804	5040	JaffaCakes118_ca8dbe608ea69a368a18072c6ce017d616ea6f493dccdde7ebe1fd8a48f9c437.exe	82
PID 5040 wrote to memory of 4804	5040	JaffaCakes118_ca8dbe608ea69a368a18072c6ce017d616ea6f493dccdde7ebe1fd8a48f9c437.exe	82
PID 5040 wrote to memory of 4804	5040	JaffaCakes118_ca8dbe608ea69a368a18072c6ce017d616ea6f493dccdde7ebe1fd8a48f9c437.exe	82
PID 5040 wrote to memory of 4804	5040	JaffaCakes118_ca8dbe608ea69a368a18072c6ce017d616ea6f493dccdde7ebe1fd8a48f9c437.exe	82
PID 5040 wrote to memory of 4804	5040	JaffaCakes118_ca8dbe608ea69a368a18072c6ce017d616ea6f493dccdde7ebe1fd8a48f9c437.exe	82
PID 5040 wrote to memory of 4804	5040	JaffaCakes118_ca8dbe608ea69a368a18072c6ce017d616ea6f493dccdde7ebe1fd8a48f9c437.exe	82
PID 5040 wrote to memory of 4804	5040	JaffaCakes118_ca8dbe608ea69a368a18072c6ce017d616ea6f493dccdde7ebe1fd8a48f9c437.exe	82
PID 4804 wrote to memory of 1560	4804	JaffaCakes118_ca8dbe608ea69a368a18072c6ce017d616ea6f493dccdde7ebe1fd8a48f9c437.exe	83
PID 4804 wrote to memory of 1560	4804	JaffaCakes118_ca8dbe608ea69a368a18072c6ce017d616ea6f493dccdde7ebe1fd8a48f9c437.exe	83
PID 4804 wrote to memory of 1560	4804	JaffaCakes118_ca8dbe608ea69a368a18072c6ce017d616ea6f493dccdde7ebe1fd8a48f9c437.exe	83
PID 4804 wrote to memory of 2064	4804	JaffaCakes118_ca8dbe608ea69a368a18072c6ce017d616ea6f493dccdde7ebe1fd8a48f9c437.exe	84
PID 4804 wrote to memory of 2064	4804	JaffaCakes118_ca8dbe608ea69a368a18072c6ce017d616ea6f493dccdde7ebe1fd8a48f9c437.exe	84
PID 4804 wrote to memory of 2064	4804	JaffaCakes118_ca8dbe608ea69a368a18072c6ce017d616ea6f493dccdde7ebe1fd8a48f9c437.exe	84
PID 2064 wrote to memory of 4072	2064	JaffaCakes118_ca8dbe608ea69a368a18072c6ce017d616ea6f493dccdde7ebe1fd8a48f9c437.exe	86
PID 2064 wrote to memory of 4072	2064	JaffaCakes118_ca8dbe608ea69a368a18072c6ce017d616ea6f493dccdde7ebe1fd8a48f9c437.exe	86
PID 2064 wrote to memory of 4072	2064	JaffaCakes118_ca8dbe608ea69a368a18072c6ce017d616ea6f493dccdde7ebe1fd8a48f9c437.exe	86
PID 2064 wrote to memory of 4072	2064	JaffaCakes118_ca8dbe608ea69a368a18072c6ce017d616ea6f493dccdde7ebe1fd8a48f9c437.exe	86
PID 2064 wrote to memory of 4072	2064	JaffaCakes118_ca8dbe608ea69a368a18072c6ce017d616ea6f493dccdde7ebe1fd8a48f9c437.exe	86
PID 2064 wrote to memory of 4072	2064	JaffaCakes118_ca8dbe608ea69a368a18072c6ce017d616ea6f493dccdde7ebe1fd8a48f9c437.exe	86
PID 2064 wrote to memory of 4072	2064	JaffaCakes118_ca8dbe608ea69a368a18072c6ce017d616ea6f493dccdde7ebe1fd8a48f9c437.exe	86
PID 2064 wrote to memory of 4072	2064	JaffaCakes118_ca8dbe608ea69a368a18072c6ce017d616ea6f493dccdde7ebe1fd8a48f9c437.exe	86
PID 2064 wrote to memory of 4072	2064	JaffaCakes118_ca8dbe608ea69a368a18072c6ce017d616ea6f493dccdde7ebe1fd8a48f9c437.exe	86
PID 2064 wrote to memory of 4072	2064	JaffaCakes118_ca8dbe608ea69a368a18072c6ce017d616ea6f493dccdde7ebe1fd8a48f9c437.exe	86

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_ca8dbe608ea69a368a18072c6ce017d616ea6f493dccdde7ebe1fd8a48f9c437.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_ca8dbe608ea69a368a18072c6ce017d616ea6f493dccdde7ebe1fd8a48f9c437.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:5040
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_ca8dbe608ea69a368a18072c6ce017d616ea6f493dccdde7ebe1fd8a48f9c437.exe
  "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_ca8dbe608ea69a368a18072c6ce017d616ea6f493dccdde7ebe1fd8a48f9c437.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:4804
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\1a68ac27-cb97-44c0-b862-0e44d8b1d361" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    - System Location Discovery: System Language Discovery
    PID:1560
- - C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_ca8dbe608ea69a368a18072c6ce017d616ea6f493dccdde7ebe1fd8a48f9c437.exe
    "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_ca8dbe608ea69a368a18072c6ce017d616ea6f493dccdde7ebe1fd8a48f9c437.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2064
  - - C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_ca8dbe608ea69a368a18072c6ce017d616ea6f493dccdde7ebe1fd8a48f9c437.exe
      "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_ca8dbe608ea69a368a18072c6ce017d616ea6f493dccdde7ebe1fd8a48f9c437.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      System Location Discovery: System Language Discovery
      PID:4072
    - - C:\Windows\SysWOW64\WerFault.exe
        
        C:\Windows\SysWOW64\WerFault.exe -u -p 4072 -s 568
        5⤵
        Program crash
        
        PID:3348

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4072 -ip 4072
1⤵
PID:3884

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\1a68ac27-cb97-44c0-b862-0e44d8b1d361\JaffaCakes118_ca8dbe608ea69a368a18072c6ce017d616ea6f493dccdde7ebe1fd8a48f9c437.exe

Filesize
768KB

MD5
63710d0aaf89298af47b923a6f5fd44b

SHA1
e92e69998126855eb1ea95eac54dcceea55df928

SHA256
ca8dbe608ea69a368a18072c6ce017d616ea6f493dccdde7ebe1fd8a48f9c437

SHA512
df222d9f140da27f5e29e2023c29d6ca8ac3489d52f8ac211da3be858f4fd66cf9b43968c54ab19a82eb507c3fba31e6086eb55b0fbc9ec0751c728d850c16bc

Download Submit
memory/2064-22-0x0000000000400000-0x00000000004E9000-memory.dmp

Filesize
932KB

Download
memory/2064-19-0x0000000000400000-0x00000000004E9000-memory.dmp

Filesize
932KB

Download
memory/4072-25-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4072-23-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4072-21-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4804-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4804-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4804-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4804-17-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4804-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/5040-1-0x0000000002280000-0x0000000002315000-memory.dmp

Filesize
596KB

Download
memory/5040-2-0x0000000002370000-0x000000000248B000-memory.dmp

Filesize
1.1MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads