djvu | 61a8fe867b1161f06fbdb841f61224e5b9971a6dcdf500a0eb8adaaf6723b975

General

Target

JaffaCakes118_61a8fe867b1161f06fbdb841f61224e5b9971a6dcdf500a0eb8adaaf6723b975.exe
Size

762KB
MD5

60bf758f7aa7fdc16626f46870ce3fc2
SHA1

93e73126d1e6f2a3bf2b735f32ec38d03d14ca21
SHA256

61a8fe867b1161f06fbdb841f61224e5b9971a6dcdf500a0eb8adaaf6723b975
SHA512

0aa2f21a58395cc77633f233a14060e9623bd80a1d83de9734df98c1b0891cbf641316df3164b5a71e6b16b1e38fdbe278c17d7e5fac5c56e212d8c90c92e5f4
SSDEEP

12288:LMEIDbdEfQcBtoJWTs9SjvucDjDCwpCp4AJsJYaZNrtSjXadwjb:LLI9EtsmeqjTCwk6QsaYrIMwj

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

C2

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

Attributes

extension
.dwqs
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/2940-2-0x0000000002210000-0x000000000232B000-memory.dmp	family_djvu
behavioral2/memory/4864-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4864-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4864-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4864-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4864-17-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4888-24-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4888-22-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4888-21-0x0000000000400000-0x0000000000537000-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-1-5-21-2878641211-696417878-3864914810-1000\Control Panel\International\Geo\Nation	JaffaCakes118_61a8fe867b1161f06fbdb841f61224e5b9971a6dcdf500a0eb8adaaf6723b975.exe

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
4476	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-1-5-21-2878641211-696417878-3864914810-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\a2603b9f-568b-426b-a001-eda43eef33ce\\JaffaCakes118_61a8fe867b1161f06fbdb841f61224e5b9971a6dcdf500a0eb8adaaf6723b975.exe\" --AutoStart"	JaffaCakes118_61a8fe867b1161f06fbdb841f61224e5b9971a6dcdf500a0eb8adaaf6723b975.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
15	api.2ip.ua
16	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 2940 set thread context of 4864	2940	JaffaCakes118_61a8fe867b1161f06fbdb841f61224e5b9971a6dcdf500a0eb8adaaf6723b975.exe	85
PID 5036 set thread context of 4888	5036	JaffaCakes118_61a8fe867b1161f06fbdb841f61224e5b9971a6dcdf500a0eb8adaaf6723b975.exe	91

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
384	4888	WerFault.exe	91

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_61a8fe867b1161f06fbdb841f61224e5b9971a6dcdf500a0eb8adaaf6723b975.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	icacls.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_61a8fe867b1161f06fbdb841f61224e5b9971a6dcdf500a0eb8adaaf6723b975.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_61a8fe867b1161f06fbdb841f61224e5b9971a6dcdf500a0eb8adaaf6723b975.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_61a8fe867b1161f06fbdb841f61224e5b9971a6dcdf500a0eb8adaaf6723b975.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4864	JaffaCakes118_61a8fe867b1161f06fbdb841f61224e5b9971a6dcdf500a0eb8adaaf6723b975.exe
4864	JaffaCakes118_61a8fe867b1161f06fbdb841f61224e5b9971a6dcdf500a0eb8adaaf6723b975.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 2940 wrote to memory of 4864	2940	JaffaCakes118_61a8fe867b1161f06fbdb841f61224e5b9971a6dcdf500a0eb8adaaf6723b975.exe	85
PID 2940 wrote to memory of 4864	2940	JaffaCakes118_61a8fe867b1161f06fbdb841f61224e5b9971a6dcdf500a0eb8adaaf6723b975.exe	85
PID 2940 wrote to memory of 4864	2940	JaffaCakes118_61a8fe867b1161f06fbdb841f61224e5b9971a6dcdf500a0eb8adaaf6723b975.exe	85
PID 2940 wrote to memory of 4864	2940	JaffaCakes118_61a8fe867b1161f06fbdb841f61224e5b9971a6dcdf500a0eb8adaaf6723b975.exe	85
PID 2940 wrote to memory of 4864	2940	JaffaCakes118_61a8fe867b1161f06fbdb841f61224e5b9971a6dcdf500a0eb8adaaf6723b975.exe	85
PID 2940 wrote to memory of 4864	2940	JaffaCakes118_61a8fe867b1161f06fbdb841f61224e5b9971a6dcdf500a0eb8adaaf6723b975.exe	85
PID 2940 wrote to memory of 4864	2940	JaffaCakes118_61a8fe867b1161f06fbdb841f61224e5b9971a6dcdf500a0eb8adaaf6723b975.exe	85
PID 2940 wrote to memory of 4864	2940	JaffaCakes118_61a8fe867b1161f06fbdb841f61224e5b9971a6dcdf500a0eb8adaaf6723b975.exe	85
PID 2940 wrote to memory of 4864	2940	JaffaCakes118_61a8fe867b1161f06fbdb841f61224e5b9971a6dcdf500a0eb8adaaf6723b975.exe	85
PID 2940 wrote to memory of 4864	2940	JaffaCakes118_61a8fe867b1161f06fbdb841f61224e5b9971a6dcdf500a0eb8adaaf6723b975.exe	85
PID 4864 wrote to memory of 4476	4864	JaffaCakes118_61a8fe867b1161f06fbdb841f61224e5b9971a6dcdf500a0eb8adaaf6723b975.exe	87
PID 4864 wrote to memory of 4476	4864	JaffaCakes118_61a8fe867b1161f06fbdb841f61224e5b9971a6dcdf500a0eb8adaaf6723b975.exe	87
PID 4864 wrote to memory of 4476	4864	JaffaCakes118_61a8fe867b1161f06fbdb841f61224e5b9971a6dcdf500a0eb8adaaf6723b975.exe	87
PID 4864 wrote to memory of 5036	4864	JaffaCakes118_61a8fe867b1161f06fbdb841f61224e5b9971a6dcdf500a0eb8adaaf6723b975.exe	88
PID 4864 wrote to memory of 5036	4864	JaffaCakes118_61a8fe867b1161f06fbdb841f61224e5b9971a6dcdf500a0eb8adaaf6723b975.exe	88
PID 4864 wrote to memory of 5036	4864	JaffaCakes118_61a8fe867b1161f06fbdb841f61224e5b9971a6dcdf500a0eb8adaaf6723b975.exe	88
PID 5036 wrote to memory of 4888	5036	JaffaCakes118_61a8fe867b1161f06fbdb841f61224e5b9971a6dcdf500a0eb8adaaf6723b975.exe	91
PID 5036 wrote to memory of 4888	5036	JaffaCakes118_61a8fe867b1161f06fbdb841f61224e5b9971a6dcdf500a0eb8adaaf6723b975.exe	91
PID 5036 wrote to memory of 4888	5036	JaffaCakes118_61a8fe867b1161f06fbdb841f61224e5b9971a6dcdf500a0eb8adaaf6723b975.exe	91
PID 5036 wrote to memory of 4888	5036	JaffaCakes118_61a8fe867b1161f06fbdb841f61224e5b9971a6dcdf500a0eb8adaaf6723b975.exe	91
PID 5036 wrote to memory of 4888	5036	JaffaCakes118_61a8fe867b1161f06fbdb841f61224e5b9971a6dcdf500a0eb8adaaf6723b975.exe	91
PID 5036 wrote to memory of 4888	5036	JaffaCakes118_61a8fe867b1161f06fbdb841f61224e5b9971a6dcdf500a0eb8adaaf6723b975.exe	91
PID 5036 wrote to memory of 4888	5036	JaffaCakes118_61a8fe867b1161f06fbdb841f61224e5b9971a6dcdf500a0eb8adaaf6723b975.exe	91
PID 5036 wrote to memory of 4888	5036	JaffaCakes118_61a8fe867b1161f06fbdb841f61224e5b9971a6dcdf500a0eb8adaaf6723b975.exe	91
PID 5036 wrote to memory of 4888	5036	JaffaCakes118_61a8fe867b1161f06fbdb841f61224e5b9971a6dcdf500a0eb8adaaf6723b975.exe	91
PID 5036 wrote to memory of 4888	5036	JaffaCakes118_61a8fe867b1161f06fbdb841f61224e5b9971a6dcdf500a0eb8adaaf6723b975.exe	91

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_61a8fe867b1161f06fbdb841f61224e5b9971a6dcdf500a0eb8adaaf6723b975.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_61a8fe867b1161f06fbdb841f61224e5b9971a6dcdf500a0eb8adaaf6723b975.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2940
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_61a8fe867b1161f06fbdb841f61224e5b9971a6dcdf500a0eb8adaaf6723b975.exe
  "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_61a8fe867b1161f06fbdb841f61224e5b9971a6dcdf500a0eb8adaaf6723b975.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:4864
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\a2603b9f-568b-426b-a001-eda43eef33ce" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    - System Location Discovery: System Language Discovery
    PID:4476
- - C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_61a8fe867b1161f06fbdb841f61224e5b9971a6dcdf500a0eb8adaaf6723b975.exe
    "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_61a8fe867b1161f06fbdb841f61224e5b9971a6dcdf500a0eb8adaaf6723b975.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:5036
  - - C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_61a8fe867b1161f06fbdb841f61224e5b9971a6dcdf500a0eb8adaaf6723b975.exe
      "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_61a8fe867b1161f06fbdb841f61224e5b9971a6dcdf500a0eb8adaaf6723b975.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      System Location Discovery: System Language Discovery
      PID:4888
    - - C:\Windows\SysWOW64\WerFault.exe
        
        C:\Windows\SysWOW64\WerFault.exe -u -p 4888 -s 568
        5⤵
        Program crash
        
        PID:384

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4888 -ip 4888
1⤵
PID:4020

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\a2603b9f-568b-426b-a001-eda43eef33ce\JaffaCakes118_61a8fe867b1161f06fbdb841f61224e5b9971a6dcdf500a0eb8adaaf6723b975.exe

Filesize
762KB

MD5
60bf758f7aa7fdc16626f46870ce3fc2

SHA1
93e73126d1e6f2a3bf2b735f32ec38d03d14ca21

SHA256
61a8fe867b1161f06fbdb841f61224e5b9971a6dcdf500a0eb8adaaf6723b975

SHA512
0aa2f21a58395cc77633f233a14060e9623bd80a1d83de9734df98c1b0891cbf641316df3164b5a71e6b16b1e38fdbe278c17d7e5fac5c56e212d8c90c92e5f4

Download Submit
memory/2940-1-0x0000000002170000-0x000000000220D000-memory.dmp

Filesize
628KB

Download
memory/2940-2-0x0000000002210000-0x000000000232B000-memory.dmp

Filesize
1.1MB

Download
memory/4864-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4864-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4864-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4864-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4864-17-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4888-24-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4888-22-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4888-21-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/5036-19-0x0000000000400000-0x00000000004C9000-memory.dmp

Filesize
804KB

Download
memory/5036-25-0x0000000000400000-0x00000000004C9000-memory.dmp

Filesize
804KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads