djvu | 72d639d86f67f7637ebe9041bda4a9cfacdfd600ec8da2998f79d04a95af789d

General

Target

JaffaCakes118_72d639d86f67f7637ebe9041bda4a9cfacdfd600ec8da2998f79d04a95af789d.exe
Size

793KB
MD5

f897719dd88e95baf1b8652d7df6c41a
SHA1

06001655b4915a952f4edf1dd7a89958feffa9d9
SHA256

72d639d86f67f7637ebe9041bda4a9cfacdfd600ec8da2998f79d04a95af789d
SHA512

46b74e652252b60fcf0c965b3f531a3c34bfabaedfaf26dae391a70965aeb09fc26ac4f471efeb72d891e859df376dff2415f6200cc1ca6a41830ebdb37c5371
SSDEEP

24576:pbj25fkVcS4i9+Xjn9savYjke59m2Aep:pbjfIRr9ejke59m2A

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

C2

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

Attributes

extension
.udla
offline_id
qwVQoIsE2xLety0oNWloOilSDuIBXJGK86LM3ot1
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/4352-2-0x0000000002310000-0x000000000242B000-memory.dmp	family_djvu
behavioral2/memory/1576-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1576-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1576-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1576-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1576-19-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1644-26-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1644-24-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1644-23-0x0000000000400000-0x0000000000537000-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-1-5-21-4089630652-1596403869-279772308-1000\Control Panel\International\Geo\Nation	JaffaCakes118_72d639d86f67f7637ebe9041bda4a9cfacdfd600ec8da2998f79d04a95af789d.exe

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
5064	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-1-5-21-4089630652-1596403869-279772308-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\4ace6e8f-90bd-43c5-9b79-01d23fcf3ce9\\JaffaCakes118_72d639d86f67f7637ebe9041bda4a9cfacdfd600ec8da2998f79d04a95af789d.exe\" --AutoStart"	JaffaCakes118_72d639d86f67f7637ebe9041bda4a9cfacdfd600ec8da2998f79d04a95af789d.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
13	api.2ip.ua
16	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 4352 set thread context of 1576	4352	JaffaCakes118_72d639d86f67f7637ebe9041bda4a9cfacdfd600ec8da2998f79d04a95af789d.exe	84
PID 4084 set thread context of 1644	4084	JaffaCakes118_72d639d86f67f7637ebe9041bda4a9cfacdfd600ec8da2998f79d04a95af789d.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
2076	1644	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_72d639d86f67f7637ebe9041bda4a9cfacdfd600ec8da2998f79d04a95af789d.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_72d639d86f67f7637ebe9041bda4a9cfacdfd600ec8da2998f79d04a95af789d.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	icacls.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_72d639d86f67f7637ebe9041bda4a9cfacdfd600ec8da2998f79d04a95af789d.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_72d639d86f67f7637ebe9041bda4a9cfacdfd600ec8da2998f79d04a95af789d.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1576	JaffaCakes118_72d639d86f67f7637ebe9041bda4a9cfacdfd600ec8da2998f79d04a95af789d.exe
1576	JaffaCakes118_72d639d86f67f7637ebe9041bda4a9cfacdfd600ec8da2998f79d04a95af789d.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 4352 wrote to memory of 1576	4352	JaffaCakes118_72d639d86f67f7637ebe9041bda4a9cfacdfd600ec8da2998f79d04a95af789d.exe	84
PID 4352 wrote to memory of 1576	4352	JaffaCakes118_72d639d86f67f7637ebe9041bda4a9cfacdfd600ec8da2998f79d04a95af789d.exe	84
PID 4352 wrote to memory of 1576	4352	JaffaCakes118_72d639d86f67f7637ebe9041bda4a9cfacdfd600ec8da2998f79d04a95af789d.exe	84
PID 4352 wrote to memory of 1576	4352	JaffaCakes118_72d639d86f67f7637ebe9041bda4a9cfacdfd600ec8da2998f79d04a95af789d.exe	84
PID 4352 wrote to memory of 1576	4352	JaffaCakes118_72d639d86f67f7637ebe9041bda4a9cfacdfd600ec8da2998f79d04a95af789d.exe	84
PID 4352 wrote to memory of 1576	4352	JaffaCakes118_72d639d86f67f7637ebe9041bda4a9cfacdfd600ec8da2998f79d04a95af789d.exe	84
PID 4352 wrote to memory of 1576	4352	JaffaCakes118_72d639d86f67f7637ebe9041bda4a9cfacdfd600ec8da2998f79d04a95af789d.exe	84
PID 4352 wrote to memory of 1576	4352	JaffaCakes118_72d639d86f67f7637ebe9041bda4a9cfacdfd600ec8da2998f79d04a95af789d.exe	84
PID 4352 wrote to memory of 1576	4352	JaffaCakes118_72d639d86f67f7637ebe9041bda4a9cfacdfd600ec8da2998f79d04a95af789d.exe	84
PID 4352 wrote to memory of 1576	4352	JaffaCakes118_72d639d86f67f7637ebe9041bda4a9cfacdfd600ec8da2998f79d04a95af789d.exe	84
PID 1576 wrote to memory of 5064	1576	JaffaCakes118_72d639d86f67f7637ebe9041bda4a9cfacdfd600ec8da2998f79d04a95af789d.exe	85
PID 1576 wrote to memory of 5064	1576	JaffaCakes118_72d639d86f67f7637ebe9041bda4a9cfacdfd600ec8da2998f79d04a95af789d.exe	85
PID 1576 wrote to memory of 5064	1576	JaffaCakes118_72d639d86f67f7637ebe9041bda4a9cfacdfd600ec8da2998f79d04a95af789d.exe	85
PID 1576 wrote to memory of 4084	1576	JaffaCakes118_72d639d86f67f7637ebe9041bda4a9cfacdfd600ec8da2998f79d04a95af789d.exe	86
PID 1576 wrote to memory of 4084	1576	JaffaCakes118_72d639d86f67f7637ebe9041bda4a9cfacdfd600ec8da2998f79d04a95af789d.exe	86
PID 1576 wrote to memory of 4084	1576	JaffaCakes118_72d639d86f67f7637ebe9041bda4a9cfacdfd600ec8da2998f79d04a95af789d.exe	86
PID 4084 wrote to memory of 1644	4084	JaffaCakes118_72d639d86f67f7637ebe9041bda4a9cfacdfd600ec8da2998f79d04a95af789d.exe	88
PID 4084 wrote to memory of 1644	4084	JaffaCakes118_72d639d86f67f7637ebe9041bda4a9cfacdfd600ec8da2998f79d04a95af789d.exe	88
PID 4084 wrote to memory of 1644	4084	JaffaCakes118_72d639d86f67f7637ebe9041bda4a9cfacdfd600ec8da2998f79d04a95af789d.exe	88
PID 4084 wrote to memory of 1644	4084	JaffaCakes118_72d639d86f67f7637ebe9041bda4a9cfacdfd600ec8da2998f79d04a95af789d.exe	88
PID 4084 wrote to memory of 1644	4084	JaffaCakes118_72d639d86f67f7637ebe9041bda4a9cfacdfd600ec8da2998f79d04a95af789d.exe	88
PID 4084 wrote to memory of 1644	4084	JaffaCakes118_72d639d86f67f7637ebe9041bda4a9cfacdfd600ec8da2998f79d04a95af789d.exe	88
PID 4084 wrote to memory of 1644	4084	JaffaCakes118_72d639d86f67f7637ebe9041bda4a9cfacdfd600ec8da2998f79d04a95af789d.exe	88
PID 4084 wrote to memory of 1644	4084	JaffaCakes118_72d639d86f67f7637ebe9041bda4a9cfacdfd600ec8da2998f79d04a95af789d.exe	88
PID 4084 wrote to memory of 1644	4084	JaffaCakes118_72d639d86f67f7637ebe9041bda4a9cfacdfd600ec8da2998f79d04a95af789d.exe	88
PID 4084 wrote to memory of 1644	4084	JaffaCakes118_72d639d86f67f7637ebe9041bda4a9cfacdfd600ec8da2998f79d04a95af789d.exe	88

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_72d639d86f67f7637ebe9041bda4a9cfacdfd600ec8da2998f79d04a95af789d.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_72d639d86f67f7637ebe9041bda4a9cfacdfd600ec8da2998f79d04a95af789d.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4352
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_72d639d86f67f7637ebe9041bda4a9cfacdfd600ec8da2998f79d04a95af789d.exe
  "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_72d639d86f67f7637ebe9041bda4a9cfacdfd600ec8da2998f79d04a95af789d.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:1576
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\4ace6e8f-90bd-43c5-9b79-01d23fcf3ce9" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    - System Location Discovery: System Language Discovery
    PID:5064
- - C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_72d639d86f67f7637ebe9041bda4a9cfacdfd600ec8da2998f79d04a95af789d.exe
    "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_72d639d86f67f7637ebe9041bda4a9cfacdfd600ec8da2998f79d04a95af789d.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:4084
  - - C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_72d639d86f67f7637ebe9041bda4a9cfacdfd600ec8da2998f79d04a95af789d.exe
      "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_72d639d86f67f7637ebe9041bda4a9cfacdfd600ec8da2998f79d04a95af789d.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      System Location Discovery: System Language Discovery
      PID:1644
    - - C:\Windows\SysWOW64\WerFault.exe
        
        C:\Windows\SysWOW64\WerFault.exe -u -p 1644 -s 584
        5⤵
        Program crash
        
        PID:2076

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 432 -p 1644 -ip 1644
1⤵
PID:1852

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\4ace6e8f-90bd-43c5-9b79-01d23fcf3ce9\JaffaCakes118_72d639d86f67f7637ebe9041bda4a9cfacdfd600ec8da2998f79d04a95af789d.exe

Filesize
793KB

MD5
f897719dd88e95baf1b8652d7df6c41a

SHA1
06001655b4915a952f4edf1dd7a89958feffa9d9

SHA256
72d639d86f67f7637ebe9041bda4a9cfacdfd600ec8da2998f79d04a95af789d

SHA512
46b74e652252b60fcf0c965b3f531a3c34bfabaedfaf26dae391a70965aeb09fc26ac4f471efeb72d891e859df376dff2415f6200cc1ca6a41830ebdb37c5371

Download Submit
memory/1576-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1576-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1576-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1576-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1576-19-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1644-26-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1644-24-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1644-23-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4084-21-0x0000000000400000-0x000000000050B000-memory.dmp

Filesize
1.0MB

Download
memory/4084-27-0x0000000000400000-0x000000000050B000-memory.dmp

Filesize
1.0MB

Download
memory/4352-1-0x00000000006B0000-0x0000000000746000-memory.dmp

Filesize
600KB

Download
memory/4352-2-0x0000000002310000-0x000000000242B000-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