djvu | e6ef7ba27cdc8c177640a495b58a718719220204acc63a68f59eafb49a8dcc07

General

Target

JaffaCakes118_e6ef7ba27cdc8c177640a495b58a718719220204acc63a68f59eafb49a8dcc07.exe
Size

837KB
MD5

724456287911a6c6f516edcdb88b5a7d
SHA1

fbad3bbf624554e106e57581bdcfda537b2bd3a4
SHA256

e6ef7ba27cdc8c177640a495b58a718719220204acc63a68f59eafb49a8dcc07
SHA512

275d72f3881fffab8125c61fa86f71262df38137ca4959b1b401270ab8e7746a064306d3e6db0633bd3e104bd8b7301e3d50ef44752c12ebd2f739120c16121d
SSDEEP

24576:G2aAVs923+hRsOWZslD1WoYzdoqBSrnF0B4PSwFf+B:pJi923+hK9ZKD1WoWdWbWBif

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/3916-2-0x0000000002290000-0x00000000023AB000-memory.dmp	family_djvu
behavioral2/memory/4000-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4000-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4000-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4000-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4000-19-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/952-24-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/952-26-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/952-23-0x0000000000400000-0x0000000000537000-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-1-5-21-2437139445-1151884604-3026847218-1000\Control Panel\International\Geo\Nation	JaffaCakes118_e6ef7ba27cdc8c177640a495b58a718719220204acc63a68f59eafb49a8dcc07.exe

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
2860	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-1-5-21-2437139445-1151884604-3026847218-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\709ca39e-d07a-48af-8f82-3826596b84f5\\JaffaCakes118_e6ef7ba27cdc8c177640a495b58a718719220204acc63a68f59eafb49a8dcc07.exe\" --AutoStart"	JaffaCakes118_e6ef7ba27cdc8c177640a495b58a718719220204acc63a68f59eafb49a8dcc07.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
11	api.2ip.ua
12	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 3916 set thread context of 4000	3916	JaffaCakes118_e6ef7ba27cdc8c177640a495b58a718719220204acc63a68f59eafb49a8dcc07.exe	83
PID 184 set thread context of 952	184	JaffaCakes118_e6ef7ba27cdc8c177640a495b58a718719220204acc63a68f59eafb49a8dcc07.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
3768	952	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_e6ef7ba27cdc8c177640a495b58a718719220204acc63a68f59eafb49a8dcc07.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_e6ef7ba27cdc8c177640a495b58a718719220204acc63a68f59eafb49a8dcc07.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	icacls.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_e6ef7ba27cdc8c177640a495b58a718719220204acc63a68f59eafb49a8dcc07.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_e6ef7ba27cdc8c177640a495b58a718719220204acc63a68f59eafb49a8dcc07.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4000	JaffaCakes118_e6ef7ba27cdc8c177640a495b58a718719220204acc63a68f59eafb49a8dcc07.exe
4000	JaffaCakes118_e6ef7ba27cdc8c177640a495b58a718719220204acc63a68f59eafb49a8dcc07.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 3916 wrote to memory of 4000	3916	JaffaCakes118_e6ef7ba27cdc8c177640a495b58a718719220204acc63a68f59eafb49a8dcc07.exe	83
PID 3916 wrote to memory of 4000	3916	JaffaCakes118_e6ef7ba27cdc8c177640a495b58a718719220204acc63a68f59eafb49a8dcc07.exe	83
PID 3916 wrote to memory of 4000	3916	JaffaCakes118_e6ef7ba27cdc8c177640a495b58a718719220204acc63a68f59eafb49a8dcc07.exe	83
PID 3916 wrote to memory of 4000	3916	JaffaCakes118_e6ef7ba27cdc8c177640a495b58a718719220204acc63a68f59eafb49a8dcc07.exe	83
PID 3916 wrote to memory of 4000	3916	JaffaCakes118_e6ef7ba27cdc8c177640a495b58a718719220204acc63a68f59eafb49a8dcc07.exe	83
PID 3916 wrote to memory of 4000	3916	JaffaCakes118_e6ef7ba27cdc8c177640a495b58a718719220204acc63a68f59eafb49a8dcc07.exe	83
PID 3916 wrote to memory of 4000	3916	JaffaCakes118_e6ef7ba27cdc8c177640a495b58a718719220204acc63a68f59eafb49a8dcc07.exe	83
PID 3916 wrote to memory of 4000	3916	JaffaCakes118_e6ef7ba27cdc8c177640a495b58a718719220204acc63a68f59eafb49a8dcc07.exe	83
PID 3916 wrote to memory of 4000	3916	JaffaCakes118_e6ef7ba27cdc8c177640a495b58a718719220204acc63a68f59eafb49a8dcc07.exe	83
PID 3916 wrote to memory of 4000	3916	JaffaCakes118_e6ef7ba27cdc8c177640a495b58a718719220204acc63a68f59eafb49a8dcc07.exe	83
PID 4000 wrote to memory of 2860	4000	JaffaCakes118_e6ef7ba27cdc8c177640a495b58a718719220204acc63a68f59eafb49a8dcc07.exe	84
PID 4000 wrote to memory of 2860	4000	JaffaCakes118_e6ef7ba27cdc8c177640a495b58a718719220204acc63a68f59eafb49a8dcc07.exe	84
PID 4000 wrote to memory of 2860	4000	JaffaCakes118_e6ef7ba27cdc8c177640a495b58a718719220204acc63a68f59eafb49a8dcc07.exe	84
PID 4000 wrote to memory of 184	4000	JaffaCakes118_e6ef7ba27cdc8c177640a495b58a718719220204acc63a68f59eafb49a8dcc07.exe	85
PID 4000 wrote to memory of 184	4000	JaffaCakes118_e6ef7ba27cdc8c177640a495b58a718719220204acc63a68f59eafb49a8dcc07.exe	85
PID 4000 wrote to memory of 184	4000	JaffaCakes118_e6ef7ba27cdc8c177640a495b58a718719220204acc63a68f59eafb49a8dcc07.exe	85
PID 184 wrote to memory of 952	184	JaffaCakes118_e6ef7ba27cdc8c177640a495b58a718719220204acc63a68f59eafb49a8dcc07.exe	88
PID 184 wrote to memory of 952	184	JaffaCakes118_e6ef7ba27cdc8c177640a495b58a718719220204acc63a68f59eafb49a8dcc07.exe	88
PID 184 wrote to memory of 952	184	JaffaCakes118_e6ef7ba27cdc8c177640a495b58a718719220204acc63a68f59eafb49a8dcc07.exe	88
PID 184 wrote to memory of 952	184	JaffaCakes118_e6ef7ba27cdc8c177640a495b58a718719220204acc63a68f59eafb49a8dcc07.exe	88
PID 184 wrote to memory of 952	184	JaffaCakes118_e6ef7ba27cdc8c177640a495b58a718719220204acc63a68f59eafb49a8dcc07.exe	88
PID 184 wrote to memory of 952	184	JaffaCakes118_e6ef7ba27cdc8c177640a495b58a718719220204acc63a68f59eafb49a8dcc07.exe	88
PID 184 wrote to memory of 952	184	JaffaCakes118_e6ef7ba27cdc8c177640a495b58a718719220204acc63a68f59eafb49a8dcc07.exe	88
PID 184 wrote to memory of 952	184	JaffaCakes118_e6ef7ba27cdc8c177640a495b58a718719220204acc63a68f59eafb49a8dcc07.exe	88
PID 184 wrote to memory of 952	184	JaffaCakes118_e6ef7ba27cdc8c177640a495b58a718719220204acc63a68f59eafb49a8dcc07.exe	88
PID 184 wrote to memory of 952	184	JaffaCakes118_e6ef7ba27cdc8c177640a495b58a718719220204acc63a68f59eafb49a8dcc07.exe	88

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_e6ef7ba27cdc8c177640a495b58a718719220204acc63a68f59eafb49a8dcc07.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_e6ef7ba27cdc8c177640a495b58a718719220204acc63a68f59eafb49a8dcc07.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3916
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_e6ef7ba27cdc8c177640a495b58a718719220204acc63a68f59eafb49a8dcc07.exe
  "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_e6ef7ba27cdc8c177640a495b58a718719220204acc63a68f59eafb49a8dcc07.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:4000
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\709ca39e-d07a-48af-8f82-3826596b84f5" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    - System Location Discovery: System Language Discovery
    PID:2860
- - C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_e6ef7ba27cdc8c177640a495b58a718719220204acc63a68f59eafb49a8dcc07.exe
    "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_e6ef7ba27cdc8c177640a495b58a718719220204acc63a68f59eafb49a8dcc07.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:184
  - - C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_e6ef7ba27cdc8c177640a495b58a718719220204acc63a68f59eafb49a8dcc07.exe
      "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_e6ef7ba27cdc8c177640a495b58a718719220204acc63a68f59eafb49a8dcc07.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      System Location Discovery: System Language Discovery
      PID:952
    - - C:\Windows\SysWOW64\WerFault.exe
        
        C:\Windows\SysWOW64\WerFault.exe -u -p 952 -s 568
        5⤵
        Program crash
        
        PID:3768

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 952 -ip 952
1⤵
PID:3328

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\709ca39e-d07a-48af-8f82-3826596b84f5\JaffaCakes118_e6ef7ba27cdc8c177640a495b58a718719220204acc63a68f59eafb49a8dcc07.exe

Filesize
837KB

MD5
724456287911a6c6f516edcdb88b5a7d

SHA1
fbad3bbf624554e106e57581bdcfda537b2bd3a4

SHA256
e6ef7ba27cdc8c177640a495b58a718719220204acc63a68f59eafb49a8dcc07

SHA512
275d72f3881fffab8125c61fa86f71262df38137ca4959b1b401270ab8e7746a064306d3e6db0633bd3e104bd8b7301e3d50ef44752c12ebd2f739120c16121d

Download Submit
memory/184-27-0x0000000000400000-0x00000000004DD000-memory.dmp

Filesize
884KB

Download
memory/184-21-0x0000000000400000-0x00000000004DD000-memory.dmp

Filesize
884KB

Download
memory/952-24-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/952-26-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/952-23-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3916-1-0x00000000021E0000-0x0000000002281000-memory.dmp

Filesize
644KB

Download
memory/3916-2-0x0000000002290000-0x00000000023AB000-memory.dmp

Filesize
1.1MB

Download
memory/4000-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4000-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4000-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4000-19-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4000-4-0x0000000000400000-0x0000000000537000-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