djvu | a10cc8509d06c6504961f45c9d4b8da4ccf8bca637b9cbfb5052f4b52b77aafd

Analysis

max time kernel
149s
max time network
154s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
30/12/2024, 17:25

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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

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 11 IoCs

resource	yara_rule
behavioral1/memory/2044-2-0x0000000001DD0000-0x0000000001EEB000-memory.dmp	family_djvu
behavioral1/memory/2536-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2536-8-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2536-9-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2536-28-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2004-35-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2004-37-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2004-50-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2004-49-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2004-51-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2004-55-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu

Djvu Ransomware
Ransomware which is a variant of the STOP family.
ransomware djvu
Djvu family
djvu

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
2768	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-1-5-21-3692679935-4019334568-335155002-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\abef9a54-cb9d-4548-9cc5-6b25d8593612\\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
4	api.2ip.ua
5	api.2ip.ua
9	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 2044 set thread context of 2536	2044	JaffaCakes118_a10cc8509d06c6504961f45c9d4b8da4ccf8bca637b9cbfb5052f4b52b77aafd.exe	30
PID 3056 set thread context of 2004	3056	JaffaCakes118_a10cc8509d06c6504961f45c9d4b8da4ccf8bca637b9cbfb5052f4b52b77aafd.exe	35

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

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2536	JaffaCakes118_a10cc8509d06c6504961f45c9d4b8da4ccf8bca637b9cbfb5052f4b52b77aafd.exe
2536	JaffaCakes118_a10cc8509d06c6504961f45c9d4b8da4ccf8bca637b9cbfb5052f4b52b77aafd.exe
2004	JaffaCakes118_a10cc8509d06c6504961f45c9d4b8da4ccf8bca637b9cbfb5052f4b52b77aafd.exe
2004	JaffaCakes118_a10cc8509d06c6504961f45c9d4b8da4ccf8bca637b9cbfb5052f4b52b77aafd.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2044 wrote to memory of 2536	2044	JaffaCakes118_a10cc8509d06c6504961f45c9d4b8da4ccf8bca637b9cbfb5052f4b52b77aafd.exe	30
PID 2044 wrote to memory of 2536	2044	JaffaCakes118_a10cc8509d06c6504961f45c9d4b8da4ccf8bca637b9cbfb5052f4b52b77aafd.exe	30
PID 2044 wrote to memory of 2536	2044	JaffaCakes118_a10cc8509d06c6504961f45c9d4b8da4ccf8bca637b9cbfb5052f4b52b77aafd.exe	30
PID 2044 wrote to memory of 2536	2044	JaffaCakes118_a10cc8509d06c6504961f45c9d4b8da4ccf8bca637b9cbfb5052f4b52b77aafd.exe	30
PID 2044 wrote to memory of 2536	2044	JaffaCakes118_a10cc8509d06c6504961f45c9d4b8da4ccf8bca637b9cbfb5052f4b52b77aafd.exe	30
PID 2044 wrote to memory of 2536	2044	JaffaCakes118_a10cc8509d06c6504961f45c9d4b8da4ccf8bca637b9cbfb5052f4b52b77aafd.exe	30
PID 2044 wrote to memory of 2536	2044	JaffaCakes118_a10cc8509d06c6504961f45c9d4b8da4ccf8bca637b9cbfb5052f4b52b77aafd.exe	30
PID 2044 wrote to memory of 2536	2044	JaffaCakes118_a10cc8509d06c6504961f45c9d4b8da4ccf8bca637b9cbfb5052f4b52b77aafd.exe	30
PID 2044 wrote to memory of 2536	2044	JaffaCakes118_a10cc8509d06c6504961f45c9d4b8da4ccf8bca637b9cbfb5052f4b52b77aafd.exe	30
PID 2044 wrote to memory of 2536	2044	JaffaCakes118_a10cc8509d06c6504961f45c9d4b8da4ccf8bca637b9cbfb5052f4b52b77aafd.exe	30
PID 2044 wrote to memory of 2536	2044	JaffaCakes118_a10cc8509d06c6504961f45c9d4b8da4ccf8bca637b9cbfb5052f4b52b77aafd.exe	30
PID 2536 wrote to memory of 2768	2536	JaffaCakes118_a10cc8509d06c6504961f45c9d4b8da4ccf8bca637b9cbfb5052f4b52b77aafd.exe	33
PID 2536 wrote to memory of 2768	2536	JaffaCakes118_a10cc8509d06c6504961f45c9d4b8da4ccf8bca637b9cbfb5052f4b52b77aafd.exe	33
PID 2536 wrote to memory of 2768	2536	JaffaCakes118_a10cc8509d06c6504961f45c9d4b8da4ccf8bca637b9cbfb5052f4b52b77aafd.exe	33
PID 2536 wrote to memory of 2768	2536	JaffaCakes118_a10cc8509d06c6504961f45c9d4b8da4ccf8bca637b9cbfb5052f4b52b77aafd.exe	33
PID 2536 wrote to memory of 3056	2536	JaffaCakes118_a10cc8509d06c6504961f45c9d4b8da4ccf8bca637b9cbfb5052f4b52b77aafd.exe	34
PID 2536 wrote to memory of 3056	2536	JaffaCakes118_a10cc8509d06c6504961f45c9d4b8da4ccf8bca637b9cbfb5052f4b52b77aafd.exe	34
PID 2536 wrote to memory of 3056	2536	JaffaCakes118_a10cc8509d06c6504961f45c9d4b8da4ccf8bca637b9cbfb5052f4b52b77aafd.exe	34
PID 2536 wrote to memory of 3056	2536	JaffaCakes118_a10cc8509d06c6504961f45c9d4b8da4ccf8bca637b9cbfb5052f4b52b77aafd.exe	34
PID 3056 wrote to memory of 2004	3056	JaffaCakes118_a10cc8509d06c6504961f45c9d4b8da4ccf8bca637b9cbfb5052f4b52b77aafd.exe	35
PID 3056 wrote to memory of 2004	3056	JaffaCakes118_a10cc8509d06c6504961f45c9d4b8da4ccf8bca637b9cbfb5052f4b52b77aafd.exe	35
PID 3056 wrote to memory of 2004	3056	JaffaCakes118_a10cc8509d06c6504961f45c9d4b8da4ccf8bca637b9cbfb5052f4b52b77aafd.exe	35
PID 3056 wrote to memory of 2004	3056	JaffaCakes118_a10cc8509d06c6504961f45c9d4b8da4ccf8bca637b9cbfb5052f4b52b77aafd.exe	35
PID 3056 wrote to memory of 2004	3056	JaffaCakes118_a10cc8509d06c6504961f45c9d4b8da4ccf8bca637b9cbfb5052f4b52b77aafd.exe	35
PID 3056 wrote to memory of 2004	3056	JaffaCakes118_a10cc8509d06c6504961f45c9d4b8da4ccf8bca637b9cbfb5052f4b52b77aafd.exe	35
PID 3056 wrote to memory of 2004	3056	JaffaCakes118_a10cc8509d06c6504961f45c9d4b8da4ccf8bca637b9cbfb5052f4b52b77aafd.exe	35
PID 3056 wrote to memory of 2004	3056	JaffaCakes118_a10cc8509d06c6504961f45c9d4b8da4ccf8bca637b9cbfb5052f4b52b77aafd.exe	35
PID 3056 wrote to memory of 2004	3056	JaffaCakes118_a10cc8509d06c6504961f45c9d4b8da4ccf8bca637b9cbfb5052f4b52b77aafd.exe	35
PID 3056 wrote to memory of 2004	3056	JaffaCakes118_a10cc8509d06c6504961f45c9d4b8da4ccf8bca637b9cbfb5052f4b52b77aafd.exe	35
PID 3056 wrote to memory of 2004	3056	JaffaCakes118_a10cc8509d06c6504961f45c9d4b8da4ccf8bca637b9cbfb5052f4b52b77aafd.exe	35

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:2044
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_a10cc8509d06c6504961f45c9d4b8da4ccf8bca637b9cbfb5052f4b52b77aafd.exe
  "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_a10cc8509d06c6504961f45c9d4b8da4ccf8bca637b9cbfb5052f4b52b77aafd.exe"
  2⤵
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:2536
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\abef9a54-cb9d-4548-9cc5-6b25d8593612" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    - System Location Discovery: System Language Discovery
    PID:2768
- - 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:3056
  - - 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:2004

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

File and Directory Permissions Modification

T1222

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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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
60bdd7e69911f881e771c41963e299d6

SHA1
9e4f7283fcb768a35272c13eb258de727f902234

SHA256
afbcc77d5f7f2e34a6003ce1465d66d12d39fc06411d789713d25d3a01386a7d

SHA512
105ef4712aa50d50f6d8204191d57ba227749b069f13c1d56864337d76ba18c4573e8a8d75def539e0be0fa29ae9df643f5b1ddde59c284a209a0647722a8c34

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

Filesize
170B

MD5
dbde8c21e6abed287d46e3aa85f8f79b

SHA1
09a529f699549fc0cf3a21bc382540086705f213

SHA256
01c7f63dcf64846face1087a10d325d6a9876745cb77872a7ef08c1b121c425d

SHA512
6f090393cae5edf44a9b097db4e9ac60462a7313cfbc4f1576786be2f866655c5298c5ba0ee71262dc7fc6ec19d567736e48594402aec949c667225ac2347a78

Download Submit
C:\Users\Admin\AppData\Local\Temp\Cab225F.tmp

Filesize
70KB

MD5
49aebf8cbd62d92ac215b2923fb1b9f5

SHA1
1723be06719828dda65ad804298d0431f6aff976

SHA256
b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

SHA512
bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

Download Submit
C:\Users\Admin\AppData\Local\abef9a54-cb9d-4548-9cc5-6b25d8593612\JaffaCakes118_a10cc8509d06c6504961f45c9d4b8da4ccf8bca637b9cbfb5052f4b52b77aafd.exe

Filesize
785KB

MD5
b9377405617bcba791fc4a4c34990fcf

SHA1
719f737d9922bb1e1cf2e4563b72c59cf0c4ea81

SHA256
a10cc8509d06c6504961f45c9d4b8da4ccf8bca637b9cbfb5052f4b52b77aafd

SHA512
898b5b5e29407e7bad826037ca38e245d229d2cef6a6955a777ee8c812db310f675d2c07c6730d4947ae83db6ffc7631bed4280092e6f2e0b7b2c6d71a17a7fb

Download Submit
memory/2004-35-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2004-55-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2004-51-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2004-49-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2004-50-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2004-37-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2044-6-0x0000000000510000-0x00000000005A2000-memory.dmp

Filesize
584KB

Download
memory/2044-0-0x0000000000510000-0x00000000005A2000-memory.dmp

Filesize
584KB

Download
memory/2044-1-0x0000000000510000-0x00000000005A2000-memory.dmp

Filesize
584KB

Download
memory/2044-2-0x0000000001DD0000-0x0000000001EEB000-memory.dmp

Filesize
1.1MB

Download
memory/2536-3-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2536-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2536-9-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2536-28-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2536-8-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3056-30-0x0000000000400000-0x0000000000508000-memory.dmp

Filesize
1.0MB

Download
memory/3056-36-0x0000000000400000-0x0000000000508000-memory.dmp

Filesize
1.0MB

Download
memory/3056-29-0x0000000000580000-0x0000000000612000-memory.dmp

Filesize
584KB

Download