djvu | db15fe4dbfe6a64ee56c4cfae9b3ee2326120af78e18447e652d4f391803b9b3

General

Target

JaffaCakes118_db15fe4dbfe6a64ee56c4cfae9b3ee2326120af78e18447e652d4f391803b9b3.exe
Size

794KB
MD5

efd086526dfe4c4f996223a0eeda211a
SHA1

4a24572a3f4d71c2600e5b8ea8b8de9c4550da28
SHA256

db15fe4dbfe6a64ee56c4cfae9b3ee2326120af78e18447e652d4f391803b9b3
SHA512

4c0fd8feaf2775f9581ac3a2577b0e988284f44f8c26fe7bd2f1604cfc636bec1f17def1110eba7f5c2b548e4b4baa1bc6619738d1dfce792313447086d90eff
SSDEEP

24576:3DVOtagkDGYTv0Jb/ZXNhs0YsWRsFx3hGB:3DM6cJ/ZHMpCG

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/1224-2-0x00000000021D0000-0x00000000022EB000-memory.dmp	family_djvu
behavioral2/memory/3100-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3100-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3100-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3100-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3100-17-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/512-21-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/512-24-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/512-22-0x0000000000400000-0x0000000000537000-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-1-5-21-2045521122-590294423-3465680274-1000\Control Panel\International\Geo\Nation	JaffaCakes118_db15fe4dbfe6a64ee56c4cfae9b3ee2326120af78e18447e652d4f391803b9b3.exe

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
3512	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\\24a1ea57-c472-4495-a710-52516584d7e0\\JaffaCakes118_db15fe4dbfe6a64ee56c4cfae9b3ee2326120af78e18447e652d4f391803b9b3.exe\" --AutoStart"	JaffaCakes118_db15fe4dbfe6a64ee56c4cfae9b3ee2326120af78e18447e652d4f391803b9b3.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 1224 set thread context of 3100	1224	JaffaCakes118_db15fe4dbfe6a64ee56c4cfae9b3ee2326120af78e18447e652d4f391803b9b3.exe	83
PID 2864 set thread context of 512	2864	JaffaCakes118_db15fe4dbfe6a64ee56c4cfae9b3ee2326120af78e18447e652d4f391803b9b3.exe	88

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
4348	512	WerFault.exe	88

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_db15fe4dbfe6a64ee56c4cfae9b3ee2326120af78e18447e652d4f391803b9b3.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_db15fe4dbfe6a64ee56c4cfae9b3ee2326120af78e18447e652d4f391803b9b3.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	icacls.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_db15fe4dbfe6a64ee56c4cfae9b3ee2326120af78e18447e652d4f391803b9b3.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_db15fe4dbfe6a64ee56c4cfae9b3ee2326120af78e18447e652d4f391803b9b3.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
3100	JaffaCakes118_db15fe4dbfe6a64ee56c4cfae9b3ee2326120af78e18447e652d4f391803b9b3.exe
3100	JaffaCakes118_db15fe4dbfe6a64ee56c4cfae9b3ee2326120af78e18447e652d4f391803b9b3.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 1224 wrote to memory of 3100	1224	JaffaCakes118_db15fe4dbfe6a64ee56c4cfae9b3ee2326120af78e18447e652d4f391803b9b3.exe	83
PID 1224 wrote to memory of 3100	1224	JaffaCakes118_db15fe4dbfe6a64ee56c4cfae9b3ee2326120af78e18447e652d4f391803b9b3.exe	83
PID 1224 wrote to memory of 3100	1224	JaffaCakes118_db15fe4dbfe6a64ee56c4cfae9b3ee2326120af78e18447e652d4f391803b9b3.exe	83
PID 1224 wrote to memory of 3100	1224	JaffaCakes118_db15fe4dbfe6a64ee56c4cfae9b3ee2326120af78e18447e652d4f391803b9b3.exe	83
PID 1224 wrote to memory of 3100	1224	JaffaCakes118_db15fe4dbfe6a64ee56c4cfae9b3ee2326120af78e18447e652d4f391803b9b3.exe	83
PID 1224 wrote to memory of 3100	1224	JaffaCakes118_db15fe4dbfe6a64ee56c4cfae9b3ee2326120af78e18447e652d4f391803b9b3.exe	83
PID 1224 wrote to memory of 3100	1224	JaffaCakes118_db15fe4dbfe6a64ee56c4cfae9b3ee2326120af78e18447e652d4f391803b9b3.exe	83
PID 1224 wrote to memory of 3100	1224	JaffaCakes118_db15fe4dbfe6a64ee56c4cfae9b3ee2326120af78e18447e652d4f391803b9b3.exe	83
PID 1224 wrote to memory of 3100	1224	JaffaCakes118_db15fe4dbfe6a64ee56c4cfae9b3ee2326120af78e18447e652d4f391803b9b3.exe	83
PID 1224 wrote to memory of 3100	1224	JaffaCakes118_db15fe4dbfe6a64ee56c4cfae9b3ee2326120af78e18447e652d4f391803b9b3.exe	83
PID 3100 wrote to memory of 3512	3100	JaffaCakes118_db15fe4dbfe6a64ee56c4cfae9b3ee2326120af78e18447e652d4f391803b9b3.exe	84
PID 3100 wrote to memory of 3512	3100	JaffaCakes118_db15fe4dbfe6a64ee56c4cfae9b3ee2326120af78e18447e652d4f391803b9b3.exe	84
PID 3100 wrote to memory of 3512	3100	JaffaCakes118_db15fe4dbfe6a64ee56c4cfae9b3ee2326120af78e18447e652d4f391803b9b3.exe	84
PID 3100 wrote to memory of 2864	3100	JaffaCakes118_db15fe4dbfe6a64ee56c4cfae9b3ee2326120af78e18447e652d4f391803b9b3.exe	85
PID 3100 wrote to memory of 2864	3100	JaffaCakes118_db15fe4dbfe6a64ee56c4cfae9b3ee2326120af78e18447e652d4f391803b9b3.exe	85
PID 3100 wrote to memory of 2864	3100	JaffaCakes118_db15fe4dbfe6a64ee56c4cfae9b3ee2326120af78e18447e652d4f391803b9b3.exe	85
PID 2864 wrote to memory of 512	2864	JaffaCakes118_db15fe4dbfe6a64ee56c4cfae9b3ee2326120af78e18447e652d4f391803b9b3.exe	88
PID 2864 wrote to memory of 512	2864	JaffaCakes118_db15fe4dbfe6a64ee56c4cfae9b3ee2326120af78e18447e652d4f391803b9b3.exe	88
PID 2864 wrote to memory of 512	2864	JaffaCakes118_db15fe4dbfe6a64ee56c4cfae9b3ee2326120af78e18447e652d4f391803b9b3.exe	88
PID 2864 wrote to memory of 512	2864	JaffaCakes118_db15fe4dbfe6a64ee56c4cfae9b3ee2326120af78e18447e652d4f391803b9b3.exe	88
PID 2864 wrote to memory of 512	2864	JaffaCakes118_db15fe4dbfe6a64ee56c4cfae9b3ee2326120af78e18447e652d4f391803b9b3.exe	88
PID 2864 wrote to memory of 512	2864	JaffaCakes118_db15fe4dbfe6a64ee56c4cfae9b3ee2326120af78e18447e652d4f391803b9b3.exe	88
PID 2864 wrote to memory of 512	2864	JaffaCakes118_db15fe4dbfe6a64ee56c4cfae9b3ee2326120af78e18447e652d4f391803b9b3.exe	88
PID 2864 wrote to memory of 512	2864	JaffaCakes118_db15fe4dbfe6a64ee56c4cfae9b3ee2326120af78e18447e652d4f391803b9b3.exe	88
PID 2864 wrote to memory of 512	2864	JaffaCakes118_db15fe4dbfe6a64ee56c4cfae9b3ee2326120af78e18447e652d4f391803b9b3.exe	88
PID 2864 wrote to memory of 512	2864	JaffaCakes118_db15fe4dbfe6a64ee56c4cfae9b3ee2326120af78e18447e652d4f391803b9b3.exe	88

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_db15fe4dbfe6a64ee56c4cfae9b3ee2326120af78e18447e652d4f391803b9b3.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_db15fe4dbfe6a64ee56c4cfae9b3ee2326120af78e18447e652d4f391803b9b3.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1224
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_db15fe4dbfe6a64ee56c4cfae9b3ee2326120af78e18447e652d4f391803b9b3.exe
  "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_db15fe4dbfe6a64ee56c4cfae9b3ee2326120af78e18447e652d4f391803b9b3.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:3100
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\24a1ea57-c472-4495-a710-52516584d7e0" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    - System Location Discovery: System Language Discovery
    PID:3512
- - C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_db15fe4dbfe6a64ee56c4cfae9b3ee2326120af78e18447e652d4f391803b9b3.exe
    "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_db15fe4dbfe6a64ee56c4cfae9b3ee2326120af78e18447e652d4f391803b9b3.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2864
  - - C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_db15fe4dbfe6a64ee56c4cfae9b3ee2326120af78e18447e652d4f391803b9b3.exe
      "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_db15fe4dbfe6a64ee56c4cfae9b3ee2326120af78e18447e652d4f391803b9b3.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      System Location Discovery: System Language Discovery
      PID:512
    - - C:\Windows\SysWOW64\WerFault.exe
        
        C:\Windows\SysWOW64\WerFault.exe -u -p 512 -s 568
        5⤵
        Program crash
        
        PID:4348

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 512 -ip 512
1⤵
PID:1524

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\24a1ea57-c472-4495-a710-52516584d7e0\JaffaCakes118_db15fe4dbfe6a64ee56c4cfae9b3ee2326120af78e18447e652d4f391803b9b3.exe

Filesize
794KB

MD5
efd086526dfe4c4f996223a0eeda211a

SHA1
4a24572a3f4d71c2600e5b8ea8b8de9c4550da28

SHA256
db15fe4dbfe6a64ee56c4cfae9b3ee2326120af78e18447e652d4f391803b9b3

SHA512
4c0fd8feaf2775f9581ac3a2577b0e988284f44f8c26fe7bd2f1604cfc636bec1f17def1110eba7f5c2b548e4b4baa1bc6619738d1dfce792313447086d90eff

Download Submit
memory/512-21-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/512-24-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/512-22-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1224-2-0x00000000021D0000-0x00000000022EB000-memory.dmp

Filesize
1.1MB

Download
memory/1224-1-0x0000000000660000-0x00000000006FB000-memory.dmp

Filesize
620KB

Download
memory/2864-19-0x0000000000400000-0x00000000004D1000-memory.dmp

Filesize
836KB

Download
memory/2864-25-0x0000000000400000-0x00000000004D1000-memory.dmp

Filesize
836KB

Download
memory/3100-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3100-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3100-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3100-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3100-17-0x0000000000400000-0x0000000000537000-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