djvu | a10cc8509d06c6504961f45c9d4b8da4ccf8bca637b9cbfb5052f4b52b77aafd

General

Target

JaffaCakes118_a10cc8509d06c6504961f45c9d4b8da4ccf8bca637b9cbfb5052f4b52b77aafd.exe
Size

785KB
MD5

b9377405617bcba791fc4a4c34990fcf
SHA1

719f737d9922bb1e1cf2e4563b72c59cf0c4ea81
SHA256

a10cc8509d06c6504961f45c9d4b8da4ccf8bca637b9cbfb5052f4b52b77aafd
SHA512

898b5b5e29407e7bad826037ca38e245d229d2cef6a6955a777ee8c812db310f675d2c07c6730d4947ae83db6ffc7631bed4280092e6f2e0b7b2c6d71a17a7fb
SSDEEP

12288:BmqGAFtV8bp8rZ2Q2/bI0xI0R67cuHO6q/sH8XGn1YbtiVJGB052HWi:UcFtCbp8YQ2/EU//uHQscXOq1B052n

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
ATTENTION! Don't worry, you can return all your files! All your files like pictures, databases, documents and other important are encrypted with strongest encryption and unique key. The only method of recovering files is to purchase decrypt tool and unique key for you. This software will decrypt all your encrypted files. What guarantees you have? You can send one of your encrypted file from your PC and we decrypt it for free. But we can decrypt only 1 file for free. File must not contain valuable information. You can get and look video overview decrypt tool: https://we.tl/t-fnn5kv33Vv Price of private key and decrypt software is $980. Discount 50% available if you contact us first 72 hours, that's price for you is $490. Please note that you'll never restore your data without payment. Check your e-mail "Spam" or "Junk" folder if you don't get answer more than 6 hours. To get this software you need write on our e-mail: [email protected] Reserve e-mail address to contact us: [email protected] Your personal ID: 0435JIjdm

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 18 IoCs

resource	yara_rule
behavioral2/memory/4264-2-0x0000000002340000-0x000000000245B000-memory.dmp	family_djvu
behavioral2/memory/4880-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4880-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4880-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4880-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4880-17-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2376-22-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2376-24-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2376-21-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2376-29-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2376-30-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2376-31-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2376-35-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2376-44-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2376-46-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2376-47-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2376-48-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2376-49-0x0000000000400000-0x0000000000537000-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-1-5-21-3442511616-637977696-3186306149-1000\Control Panel\International\Geo\Nation	JaffaCakes118_a10cc8509d06c6504961f45c9d4b8da4ccf8bca637b9cbfb5052f4b52b77aafd.exe

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
3308	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-1-5-21-3442511616-637977696-3186306149-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\7286c5b4-42fa-45a8-b442-245a19176656\\JaffaCakes118_a10cc8509d06c6504961f45c9d4b8da4ccf8bca637b9cbfb5052f4b52b77aafd.exe\" --AutoStart"	JaffaCakes118_a10cc8509d06c6504961f45c9d4b8da4ccf8bca637b9cbfb5052f4b52b77aafd.exe

Looks up external IP address via web service 3 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
6	api.2ip.ua
7	api.2ip.ua
17	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 4264 set thread context of 4880	4264	JaffaCakes118_a10cc8509d06c6504961f45c9d4b8da4ccf8bca637b9cbfb5052f4b52b77aafd.exe	82
PID 1656 set thread context of 2376	1656	JaffaCakes118_a10cc8509d06c6504961f45c9d4b8da4ccf8bca637b9cbfb5052f4b52b77aafd.exe	86

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

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_a10cc8509d06c6504961f45c9d4b8da4ccf8bca637b9cbfb5052f4b52b77aafd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_a10cc8509d06c6504961f45c9d4b8da4ccf8bca637b9cbfb5052f4b52b77aafd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_a10cc8509d06c6504961f45c9d4b8da4ccf8bca637b9cbfb5052f4b52b77aafd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	icacls.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_a10cc8509d06c6504961f45c9d4b8da4ccf8bca637b9cbfb5052f4b52b77aafd.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
4880	JaffaCakes118_a10cc8509d06c6504961f45c9d4b8da4ccf8bca637b9cbfb5052f4b52b77aafd.exe
4880	JaffaCakes118_a10cc8509d06c6504961f45c9d4b8da4ccf8bca637b9cbfb5052f4b52b77aafd.exe
2376	JaffaCakes118_a10cc8509d06c6504961f45c9d4b8da4ccf8bca637b9cbfb5052f4b52b77aafd.exe
2376	JaffaCakes118_a10cc8509d06c6504961f45c9d4b8da4ccf8bca637b9cbfb5052f4b52b77aafd.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 4264 wrote to memory of 4880	4264	JaffaCakes118_a10cc8509d06c6504961f45c9d4b8da4ccf8bca637b9cbfb5052f4b52b77aafd.exe	82
PID 4264 wrote to memory of 4880	4264	JaffaCakes118_a10cc8509d06c6504961f45c9d4b8da4ccf8bca637b9cbfb5052f4b52b77aafd.exe	82
PID 4264 wrote to memory of 4880	4264	JaffaCakes118_a10cc8509d06c6504961f45c9d4b8da4ccf8bca637b9cbfb5052f4b52b77aafd.exe	82
PID 4264 wrote to memory of 4880	4264	JaffaCakes118_a10cc8509d06c6504961f45c9d4b8da4ccf8bca637b9cbfb5052f4b52b77aafd.exe	82
PID 4264 wrote to memory of 4880	4264	JaffaCakes118_a10cc8509d06c6504961f45c9d4b8da4ccf8bca637b9cbfb5052f4b52b77aafd.exe	82
PID 4264 wrote to memory of 4880	4264	JaffaCakes118_a10cc8509d06c6504961f45c9d4b8da4ccf8bca637b9cbfb5052f4b52b77aafd.exe	82
PID 4264 wrote to memory of 4880	4264	JaffaCakes118_a10cc8509d06c6504961f45c9d4b8da4ccf8bca637b9cbfb5052f4b52b77aafd.exe	82
PID 4264 wrote to memory of 4880	4264	JaffaCakes118_a10cc8509d06c6504961f45c9d4b8da4ccf8bca637b9cbfb5052f4b52b77aafd.exe	82
PID 4264 wrote to memory of 4880	4264	JaffaCakes118_a10cc8509d06c6504961f45c9d4b8da4ccf8bca637b9cbfb5052f4b52b77aafd.exe	82
PID 4264 wrote to memory of 4880	4264	JaffaCakes118_a10cc8509d06c6504961f45c9d4b8da4ccf8bca637b9cbfb5052f4b52b77aafd.exe	82
PID 4880 wrote to memory of 3308	4880	JaffaCakes118_a10cc8509d06c6504961f45c9d4b8da4ccf8bca637b9cbfb5052f4b52b77aafd.exe	83
PID 4880 wrote to memory of 3308	4880	JaffaCakes118_a10cc8509d06c6504961f45c9d4b8da4ccf8bca637b9cbfb5052f4b52b77aafd.exe	83
PID 4880 wrote to memory of 3308	4880	JaffaCakes118_a10cc8509d06c6504961f45c9d4b8da4ccf8bca637b9cbfb5052f4b52b77aafd.exe	83
PID 4880 wrote to memory of 1656	4880	JaffaCakes118_a10cc8509d06c6504961f45c9d4b8da4ccf8bca637b9cbfb5052f4b52b77aafd.exe	84
PID 4880 wrote to memory of 1656	4880	JaffaCakes118_a10cc8509d06c6504961f45c9d4b8da4ccf8bca637b9cbfb5052f4b52b77aafd.exe	84
PID 4880 wrote to memory of 1656	4880	JaffaCakes118_a10cc8509d06c6504961f45c9d4b8da4ccf8bca637b9cbfb5052f4b52b77aafd.exe	84
PID 1656 wrote to memory of 2376	1656	JaffaCakes118_a10cc8509d06c6504961f45c9d4b8da4ccf8bca637b9cbfb5052f4b52b77aafd.exe	86
PID 1656 wrote to memory of 2376	1656	JaffaCakes118_a10cc8509d06c6504961f45c9d4b8da4ccf8bca637b9cbfb5052f4b52b77aafd.exe	86
PID 1656 wrote to memory of 2376	1656	JaffaCakes118_a10cc8509d06c6504961f45c9d4b8da4ccf8bca637b9cbfb5052f4b52b77aafd.exe	86
PID 1656 wrote to memory of 2376	1656	JaffaCakes118_a10cc8509d06c6504961f45c9d4b8da4ccf8bca637b9cbfb5052f4b52b77aafd.exe	86
PID 1656 wrote to memory of 2376	1656	JaffaCakes118_a10cc8509d06c6504961f45c9d4b8da4ccf8bca637b9cbfb5052f4b52b77aafd.exe	86
PID 1656 wrote to memory of 2376	1656	JaffaCakes118_a10cc8509d06c6504961f45c9d4b8da4ccf8bca637b9cbfb5052f4b52b77aafd.exe	86
PID 1656 wrote to memory of 2376	1656	JaffaCakes118_a10cc8509d06c6504961f45c9d4b8da4ccf8bca637b9cbfb5052f4b52b77aafd.exe	86
PID 1656 wrote to memory of 2376	1656	JaffaCakes118_a10cc8509d06c6504961f45c9d4b8da4ccf8bca637b9cbfb5052f4b52b77aafd.exe	86
PID 1656 wrote to memory of 2376	1656	JaffaCakes118_a10cc8509d06c6504961f45c9d4b8da4ccf8bca637b9cbfb5052f4b52b77aafd.exe	86
PID 1656 wrote to memory of 2376	1656	JaffaCakes118_a10cc8509d06c6504961f45c9d4b8da4ccf8bca637b9cbfb5052f4b52b77aafd.exe	86

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_a10cc8509d06c6504961f45c9d4b8da4ccf8bca637b9cbfb5052f4b52b77aafd.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_a10cc8509d06c6504961f45c9d4b8da4ccf8bca637b9cbfb5052f4b52b77aafd.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4264
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_a10cc8509d06c6504961f45c9d4b8da4ccf8bca637b9cbfb5052f4b52b77aafd.exe
  "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_a10cc8509d06c6504961f45c9d4b8da4ccf8bca637b9cbfb5052f4b52b77aafd.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:4880
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\7286c5b4-42fa-45a8-b442-245a19176656" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    - System Location Discovery: System Language Discovery
    PID:3308
- - C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_a10cc8509d06c6504961f45c9d4b8da4ccf8bca637b9cbfb5052f4b52b77aafd.exe
    "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_a10cc8509d06c6504961f45c9d4b8da4ccf8bca637b9cbfb5052f4b52b77aafd.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:1656
  - - C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_a10cc8509d06c6504961f45c9d4b8da4ccf8bca637b9cbfb5052f4b52b77aafd.exe
      "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_a10cc8509d06c6504961f45c9d4b8da4ccf8bca637b9cbfb5052f4b52b77aafd.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      PID:2376

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\LocalLow\Microsoft\CryptnetUrlCache\Content\8B2B9A00839EED1DFDCCC3BFC2F5DF12

Filesize
1KB

MD5
67e486b2f148a3fca863728242b6273e

SHA1
452a84c183d7ea5b7c015b597e94af8eef66d44a

SHA256
facaf1c3a4bf232abce19a2d534e495b0d3adc7dbe3797d336249aa6f70adcfb

SHA512
d3a37da3bb10a9736dc03e8b2b49baceef5d73c026e2077b8ebc1b786f2c9b2f807e0aa13a5866cf3b3cafd2bc506242ef139c423eaffb050bbb87773e53881e

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\B46811C17859FFB409CF0E904A4AA8F8

Filesize
436B

MD5
971c514f84bba0785f80aa1c23edfd79

SHA1
732acea710a87530c6b08ecdf32a110d254a54c8

SHA256
f157ed17fcaf8837fa82f8b69973848c9b10a02636848f995698212a08f31895

SHA512
43dc1425d80e170c645a3e3bb56da8c3acd31bd637329e9e37094ac346ac85434df4edcdbefc05ae00aea33a80a88e2af695997a495611217fe6706075a63c58

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\8B2B9A00839EED1DFDCCC3BFC2F5DF12

Filesize
174B

MD5
601925b9113b90a844f45835844fb1f6

SHA1
b95d74b2bb80d350dd8085c64df6124f3eaf9b8e

SHA256
78bbaeca8b6f86de1613a6ace3dd45ce6b91d3676b83abe41340446f7298e3db

SHA512
3039e0ae76a604f9b4a38a6b6889bc00710f0c6449a3deca785a0e4ab63244101db7b0dd56c5832d5d17953481e91e7daa8eaa54613178849cf25635950ccc12

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\B46811C17859FFB409CF0E904A4AA8F8

Filesize
170B

MD5
aeee662928d26f11dae8879b5cd05889

SHA1
436530ae17ca9170a7ef6b24fa2e59b9946a0f94

SHA256
35b4a2dab94a1969ce826001bf236de1a8fa143746db8abdf311d98b1a9556d1

SHA512
5ab468778eb945404bf8e81d4eb4997ccc4b3fe4ffbef1c55e44d45f2a521ff7d0a592a609e3de2d47515d0bbd6687fad4b13bafc6a427726586f2af81b39440

Download Submit
C:\Users\Admin\AppData\Local\7286c5b4-42fa-45a8-b442-245a19176656\JaffaCakes118_a10cc8509d06c6504961f45c9d4b8da4ccf8bca637b9cbfb5052f4b52b77aafd.exe

Filesize
785KB

MD5
b9377405617bcba791fc4a4c34990fcf

SHA1
719f737d9922bb1e1cf2e4563b72c59cf0c4ea81

SHA256
a10cc8509d06c6504961f45c9d4b8da4ccf8bca637b9cbfb5052f4b52b77aafd

SHA512
898b5b5e29407e7bad826037ca38e245d229d2cef6a6955a777ee8c812db310f675d2c07c6730d4947ae83db6ffc7631bed4280092e6f2e0b7b2c6d71a17a7fb

Download Submit
memory/1656-19-0x0000000000400000-0x0000000000508000-memory.dmp

Filesize
1.0MB

Download
memory/1656-23-0x0000000000400000-0x0000000000508000-memory.dmp

Filesize
1.0MB

Download
memory/2376-21-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2376-31-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2376-22-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2376-24-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2376-49-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2376-48-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2376-47-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2376-46-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2376-44-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2376-35-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2376-29-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2376-30-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4264-1-0x0000000002250000-0x00000000022EB000-memory.dmp

Filesize
620KB

Download
memory/4264-2-0x0000000002340000-0x000000000245B000-memory.dmp

Filesize
1.1MB

Download
memory/4880-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4880-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4880-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4880-17-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4880-6-0x0000000000400000-0x0000000000537000-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