djvu | e4c05bc6f648495016a6e6a078253cf0ed7d97f00f937df776b8f9b50bdece57

General

Target

JaffaCakes118_e4c05bc6f648495016a6e6a078253cf0ed7d97f00f937df776b8f9b50bdece57.exe
Size

759KB
MD5

b68c88878f6b9bdd0df07df4dd78a5c2
SHA1

0c6d8ed96b2fa7628bbcdd63b445358a40420db2
SHA256

e4c05bc6f648495016a6e6a078253cf0ed7d97f00f937df776b8f9b50bdece57
SHA512

561051c1779b34ec194aa8d51b4697ab3048bc6b661df38573025ff6493a7cfe0d85f01a75e9e1896787d6aeb1dd30085d9fb90e1dd5383934db9fdeb4a91a35
SSDEEP

12288:8yVxZ0fZ1vQd009Fzq40h8IlKD+pwpmH37+1nOTzMDXN+d/JwmYyQiavME2sTGch:kff1eqCk3ihOPMDd+d/JwmWiavMEzTGe

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

C2

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

Attributes

extension
.tuid
offline_id
LgcOIftV0dQfFBQStVNfb8BhHy8tHRPvXwSiFwt1
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/4620-2-0x0000000002340000-0x000000000245B000-memory.dmp	family_djvu
behavioral2/memory/3704-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3704-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3704-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3704-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3704-17-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4000-21-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4000-22-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4000-24-0x0000000000400000-0x0000000000537000-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-1-5-21-3227495264-2217614367-4027411560-1000\Control Panel\International\Geo\Nation	JaffaCakes118_e4c05bc6f648495016a6e6a078253cf0ed7d97f00f937df776b8f9b50bdece57.exe

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
3876	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-1-5-21-3227495264-2217614367-4027411560-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\eb6df9c8-2e42-4dcd-9a56-e55b3ba5b243\\JaffaCakes118_e4c05bc6f648495016a6e6a078253cf0ed7d97f00f937df776b8f9b50bdece57.exe\" --AutoStart"	JaffaCakes118_e4c05bc6f648495016a6e6a078253cf0ed7d97f00f937df776b8f9b50bdece57.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 4620 set thread context of 3704	4620	JaffaCakes118_e4c05bc6f648495016a6e6a078253cf0ed7d97f00f937df776b8f9b50bdece57.exe	82
PID 732 set thread context of 4000	732	JaffaCakes118_e4c05bc6f648495016a6e6a078253cf0ed7d97f00f937df776b8f9b50bdece57.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
1908	4000	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	JaffaCakes118_e4c05bc6f648495016a6e6a078253cf0ed7d97f00f937df776b8f9b50bdece57.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	icacls.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_e4c05bc6f648495016a6e6a078253cf0ed7d97f00f937df776b8f9b50bdece57.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_e4c05bc6f648495016a6e6a078253cf0ed7d97f00f937df776b8f9b50bdece57.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_e4c05bc6f648495016a6e6a078253cf0ed7d97f00f937df776b8f9b50bdece57.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
3704	JaffaCakes118_e4c05bc6f648495016a6e6a078253cf0ed7d97f00f937df776b8f9b50bdece57.exe
3704	JaffaCakes118_e4c05bc6f648495016a6e6a078253cf0ed7d97f00f937df776b8f9b50bdece57.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 4620 wrote to memory of 3704	4620	JaffaCakes118_e4c05bc6f648495016a6e6a078253cf0ed7d97f00f937df776b8f9b50bdece57.exe	82
PID 4620 wrote to memory of 3704	4620	JaffaCakes118_e4c05bc6f648495016a6e6a078253cf0ed7d97f00f937df776b8f9b50bdece57.exe	82
PID 4620 wrote to memory of 3704	4620	JaffaCakes118_e4c05bc6f648495016a6e6a078253cf0ed7d97f00f937df776b8f9b50bdece57.exe	82
PID 4620 wrote to memory of 3704	4620	JaffaCakes118_e4c05bc6f648495016a6e6a078253cf0ed7d97f00f937df776b8f9b50bdece57.exe	82
PID 4620 wrote to memory of 3704	4620	JaffaCakes118_e4c05bc6f648495016a6e6a078253cf0ed7d97f00f937df776b8f9b50bdece57.exe	82
PID 4620 wrote to memory of 3704	4620	JaffaCakes118_e4c05bc6f648495016a6e6a078253cf0ed7d97f00f937df776b8f9b50bdece57.exe	82
PID 4620 wrote to memory of 3704	4620	JaffaCakes118_e4c05bc6f648495016a6e6a078253cf0ed7d97f00f937df776b8f9b50bdece57.exe	82
PID 4620 wrote to memory of 3704	4620	JaffaCakes118_e4c05bc6f648495016a6e6a078253cf0ed7d97f00f937df776b8f9b50bdece57.exe	82
PID 4620 wrote to memory of 3704	4620	JaffaCakes118_e4c05bc6f648495016a6e6a078253cf0ed7d97f00f937df776b8f9b50bdece57.exe	82
PID 4620 wrote to memory of 3704	4620	JaffaCakes118_e4c05bc6f648495016a6e6a078253cf0ed7d97f00f937df776b8f9b50bdece57.exe	82
PID 3704 wrote to memory of 3876	3704	JaffaCakes118_e4c05bc6f648495016a6e6a078253cf0ed7d97f00f937df776b8f9b50bdece57.exe	83
PID 3704 wrote to memory of 3876	3704	JaffaCakes118_e4c05bc6f648495016a6e6a078253cf0ed7d97f00f937df776b8f9b50bdece57.exe	83
PID 3704 wrote to memory of 3876	3704	JaffaCakes118_e4c05bc6f648495016a6e6a078253cf0ed7d97f00f937df776b8f9b50bdece57.exe	83
PID 3704 wrote to memory of 732	3704	JaffaCakes118_e4c05bc6f648495016a6e6a078253cf0ed7d97f00f937df776b8f9b50bdece57.exe	84
PID 3704 wrote to memory of 732	3704	JaffaCakes118_e4c05bc6f648495016a6e6a078253cf0ed7d97f00f937df776b8f9b50bdece57.exe	84
PID 3704 wrote to memory of 732	3704	JaffaCakes118_e4c05bc6f648495016a6e6a078253cf0ed7d97f00f937df776b8f9b50bdece57.exe	84
PID 732 wrote to memory of 4000	732	JaffaCakes118_e4c05bc6f648495016a6e6a078253cf0ed7d97f00f937df776b8f9b50bdece57.exe	86
PID 732 wrote to memory of 4000	732	JaffaCakes118_e4c05bc6f648495016a6e6a078253cf0ed7d97f00f937df776b8f9b50bdece57.exe	86
PID 732 wrote to memory of 4000	732	JaffaCakes118_e4c05bc6f648495016a6e6a078253cf0ed7d97f00f937df776b8f9b50bdece57.exe	86
PID 732 wrote to memory of 4000	732	JaffaCakes118_e4c05bc6f648495016a6e6a078253cf0ed7d97f00f937df776b8f9b50bdece57.exe	86
PID 732 wrote to memory of 4000	732	JaffaCakes118_e4c05bc6f648495016a6e6a078253cf0ed7d97f00f937df776b8f9b50bdece57.exe	86
PID 732 wrote to memory of 4000	732	JaffaCakes118_e4c05bc6f648495016a6e6a078253cf0ed7d97f00f937df776b8f9b50bdece57.exe	86
PID 732 wrote to memory of 4000	732	JaffaCakes118_e4c05bc6f648495016a6e6a078253cf0ed7d97f00f937df776b8f9b50bdece57.exe	86
PID 732 wrote to memory of 4000	732	JaffaCakes118_e4c05bc6f648495016a6e6a078253cf0ed7d97f00f937df776b8f9b50bdece57.exe	86
PID 732 wrote to memory of 4000	732	JaffaCakes118_e4c05bc6f648495016a6e6a078253cf0ed7d97f00f937df776b8f9b50bdece57.exe	86
PID 732 wrote to memory of 4000	732	JaffaCakes118_e4c05bc6f648495016a6e6a078253cf0ed7d97f00f937df776b8f9b50bdece57.exe	86

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_e4c05bc6f648495016a6e6a078253cf0ed7d97f00f937df776b8f9b50bdece57.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_e4c05bc6f648495016a6e6a078253cf0ed7d97f00f937df776b8f9b50bdece57.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4620
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_e4c05bc6f648495016a6e6a078253cf0ed7d97f00f937df776b8f9b50bdece57.exe
  "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_e4c05bc6f648495016a6e6a078253cf0ed7d97f00f937df776b8f9b50bdece57.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:3704
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\eb6df9c8-2e42-4dcd-9a56-e55b3ba5b243" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    - System Location Discovery: System Language Discovery
    PID:3876
- - C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_e4c05bc6f648495016a6e6a078253cf0ed7d97f00f937df776b8f9b50bdece57.exe
    "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_e4c05bc6f648495016a6e6a078253cf0ed7d97f00f937df776b8f9b50bdece57.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:732
  - - C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_e4c05bc6f648495016a6e6a078253cf0ed7d97f00f937df776b8f9b50bdece57.exe
      "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_e4c05bc6f648495016a6e6a078253cf0ed7d97f00f937df776b8f9b50bdece57.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      System Location Discovery: System Language Discovery
      PID:4000
    - - C:\Windows\SysWOW64\WerFault.exe
        
        C:\Windows\SysWOW64\WerFault.exe -u -p 4000 -s 568
        5⤵
        Program crash
        
        PID:1908

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 364 -p 4000 -ip 4000
1⤵
PID:1136

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\eb6df9c8-2e42-4dcd-9a56-e55b3ba5b243\JaffaCakes118_e4c05bc6f648495016a6e6a078253cf0ed7d97f00f937df776b8f9b50bdece57.exe

Filesize
759KB

MD5
b68c88878f6b9bdd0df07df4dd78a5c2

SHA1
0c6d8ed96b2fa7628bbcdd63b445358a40420db2

SHA256
e4c05bc6f648495016a6e6a078253cf0ed7d97f00f937df776b8f9b50bdece57

SHA512
561051c1779b34ec194aa8d51b4697ab3048bc6b661df38573025ff6493a7cfe0d85f01a75e9e1896787d6aeb1dd30085d9fb90e1dd5383934db9fdeb4a91a35

Download Submit
memory/732-25-0x0000000000400000-0x00000000004E8000-memory.dmp

Filesize
928KB

Download
memory/732-19-0x0000000000400000-0x00000000004E8000-memory.dmp

Filesize
928KB

Download
memory/3704-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3704-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3704-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3704-17-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3704-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4000-21-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4000-22-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4000-24-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4620-1-0x0000000000A20000-0x0000000000ABB000-memory.dmp

Filesize
620KB

Download
memory/4620-2-0x0000000002340000-0x000000000245B000-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