djvu | 5452492faf9dddebb689c54a2f2d932de2a2b6e17e03d1c2c91f3afdc89ed164

Resubmissions

18-01-2025 16:35

250118-t3r6cayral 10

11-01-2025 02:54

250111-dd219asrcr 10

Analysis

max time kernel
148s
max time network
128s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
11-01-2025 02:54

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General

Target

JaffaCakes118_f510384bacc30d8c4fb9e7b69d65b185.exe
Size

781KB
MD5

f510384bacc30d8c4fb9e7b69d65b185
SHA1

56f69e4ccafc32d278781c3494a43e132f63868b
SHA256

5452492faf9dddebb689c54a2f2d932de2a2b6e17e03d1c2c91f3afdc89ed164
SHA512

2a1dedc0bfa5a7520d1842ec39a964ab9d34625efef22be315720a260ac695832a862ab6357f7d9490da7308fb52c898592e9b04f1f7006f31c4b71bd1c4a333
SSDEEP

12288:JKpD2QkyuNMX/HiKt6LAQF/bRBlB3BgxAoIaRYHk2gIkXYbsqLMxD:JwSQkLNM/i86cQ5NBl7gxpdwfbsqLM

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

http://rlrz.org/fhsgtsspen6/get.php

Attributes

extension
.maql
offline_id
xcdIdDNFh62dy3iJsba1COhcfDENsbjPHQQ2Eht1
payload_url
http://znpst.top/dl/build2.exe

http://rlrz.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-pk3SGFlmek 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: 0340gSd743d

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 14 IoCs

resource	yara_rule
behavioral1/memory/2980-1-0x0000000004990000-0x0000000004AAB000-memory.dmp	family_djvu
behavioral1/memory/1932-7-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1932-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1932-8-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1932-28-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/580-31-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/580-46-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/580-45-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/580-47-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/580-49-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/580-51-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/580-53-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/580-54-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/580-55-0x0000000000400000-0x0000000000537000-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
2776	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-1-5-21-312935884-697965778-3955649944-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\7a70e759-f7af-4d63-a8bc-8694df7ca516\\JaffaCakes118_f510384bacc30d8c4fb9e7b69d65b185.exe\" --AutoStart"	JaffaCakes118_f510384bacc30d8c4fb9e7b69d65b185.exe

Looks up external IP address via web service 4 IoCs

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

flow	ioc
10	api.2ip.ua
4	api.2ip.ua
5	api.2ip.ua
9	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 2980 set thread context of 1932	2980	JaffaCakes118_f510384bacc30d8c4fb9e7b69d65b185.exe	30
PID 2672 set thread context of 580	2672	JaffaCakes118_f510384bacc30d8c4fb9e7b69d65b185.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_f510384bacc30d8c4fb9e7b69d65b185.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_f510384bacc30d8c4fb9e7b69d65b185.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	icacls.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_f510384bacc30d8c4fb9e7b69d65b185.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_f510384bacc30d8c4fb9e7b69d65b185.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
1932	JaffaCakes118_f510384bacc30d8c4fb9e7b69d65b185.exe
1932	JaffaCakes118_f510384bacc30d8c4fb9e7b69d65b185.exe
580	JaffaCakes118_f510384bacc30d8c4fb9e7b69d65b185.exe
580	JaffaCakes118_f510384bacc30d8c4fb9e7b69d65b185.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2980 wrote to memory of 1932	2980	JaffaCakes118_f510384bacc30d8c4fb9e7b69d65b185.exe	30
PID 2980 wrote to memory of 1932	2980	JaffaCakes118_f510384bacc30d8c4fb9e7b69d65b185.exe	30
PID 2980 wrote to memory of 1932	2980	JaffaCakes118_f510384bacc30d8c4fb9e7b69d65b185.exe	30
PID 2980 wrote to memory of 1932	2980	JaffaCakes118_f510384bacc30d8c4fb9e7b69d65b185.exe	30
PID 2980 wrote to memory of 1932	2980	JaffaCakes118_f510384bacc30d8c4fb9e7b69d65b185.exe	30
PID 2980 wrote to memory of 1932	2980	JaffaCakes118_f510384bacc30d8c4fb9e7b69d65b185.exe	30
PID 2980 wrote to memory of 1932	2980	JaffaCakes118_f510384bacc30d8c4fb9e7b69d65b185.exe	30
PID 2980 wrote to memory of 1932	2980	JaffaCakes118_f510384bacc30d8c4fb9e7b69d65b185.exe	30
PID 2980 wrote to memory of 1932	2980	JaffaCakes118_f510384bacc30d8c4fb9e7b69d65b185.exe	30
PID 2980 wrote to memory of 1932	2980	JaffaCakes118_f510384bacc30d8c4fb9e7b69d65b185.exe	30
PID 2980 wrote to memory of 1932	2980	JaffaCakes118_f510384bacc30d8c4fb9e7b69d65b185.exe	30
PID 1932 wrote to memory of 2776	1932	JaffaCakes118_f510384bacc30d8c4fb9e7b69d65b185.exe	32
PID 1932 wrote to memory of 2776	1932	JaffaCakes118_f510384bacc30d8c4fb9e7b69d65b185.exe	32
PID 1932 wrote to memory of 2776	1932	JaffaCakes118_f510384bacc30d8c4fb9e7b69d65b185.exe	32
PID 1932 wrote to memory of 2776	1932	JaffaCakes118_f510384bacc30d8c4fb9e7b69d65b185.exe	32
PID 1932 wrote to memory of 2672	1932	JaffaCakes118_f510384bacc30d8c4fb9e7b69d65b185.exe	34
PID 1932 wrote to memory of 2672	1932	JaffaCakes118_f510384bacc30d8c4fb9e7b69d65b185.exe	34
PID 1932 wrote to memory of 2672	1932	JaffaCakes118_f510384bacc30d8c4fb9e7b69d65b185.exe	34
PID 1932 wrote to memory of 2672	1932	JaffaCakes118_f510384bacc30d8c4fb9e7b69d65b185.exe	34
PID 2672 wrote to memory of 580	2672	JaffaCakes118_f510384bacc30d8c4fb9e7b69d65b185.exe	35
PID 2672 wrote to memory of 580	2672	JaffaCakes118_f510384bacc30d8c4fb9e7b69d65b185.exe	35
PID 2672 wrote to memory of 580	2672	JaffaCakes118_f510384bacc30d8c4fb9e7b69d65b185.exe	35
PID 2672 wrote to memory of 580	2672	JaffaCakes118_f510384bacc30d8c4fb9e7b69d65b185.exe	35
PID 2672 wrote to memory of 580	2672	JaffaCakes118_f510384bacc30d8c4fb9e7b69d65b185.exe	35
PID 2672 wrote to memory of 580	2672	JaffaCakes118_f510384bacc30d8c4fb9e7b69d65b185.exe	35
PID 2672 wrote to memory of 580	2672	JaffaCakes118_f510384bacc30d8c4fb9e7b69d65b185.exe	35
PID 2672 wrote to memory of 580	2672	JaffaCakes118_f510384bacc30d8c4fb9e7b69d65b185.exe	35
PID 2672 wrote to memory of 580	2672	JaffaCakes118_f510384bacc30d8c4fb9e7b69d65b185.exe	35
PID 2672 wrote to memory of 580	2672	JaffaCakes118_f510384bacc30d8c4fb9e7b69d65b185.exe	35
PID 2672 wrote to memory of 580	2672	JaffaCakes118_f510384bacc30d8c4fb9e7b69d65b185.exe	35

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_f510384bacc30d8c4fb9e7b69d65b185.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_f510384bacc30d8c4fb9e7b69d65b185.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2980
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_f510384bacc30d8c4fb9e7b69d65b185.exe
  "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_f510384bacc30d8c4fb9e7b69d65b185.exe"
  2⤵
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:1932
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\7a70e759-f7af-4d63-a8bc-8694df7ca516" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    - System Location Discovery: System Language Discovery
    PID:2776
- - C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_f510384bacc30d8c4fb9e7b69d65b185.exe
    "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_f510384bacc30d8c4fb9e7b69d65b185.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2672
  - - C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_f510384bacc30d8c4fb9e7b69d65b185.exe
      "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_f510384bacc30d8c4fb9e7b69d65b185.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      PID:580

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
c9be626e9715952e9b70f92f912b9787

SHA1
aa2e946d9ad9027172d0d321917942b7562d6abe

SHA256
c13e8d22800c200915f87f71c31185053e4e60ca25de2e41e160e09cd2d815d4

SHA512
7581b7c593785380e9db3ae760af85c1a889f607a3cd2aa5a2695a0e5a0fe8ee751578e88f7d8c997faeda804e2fc2655d859bee2832eace526ed4379edaa3f5

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
0d74a85527a095e4c36741fdd5567b8e

SHA1
14f1f74d5cbd8869a6355df4f052c7407616a102

SHA256
bfd994740d7e43d508a40071c1e56b345faa96045eeea9c651050681ddf97779

SHA512
1dfcb24e82c9bd1563ffaa3ed3c808c05e192126cf6386b5109d8f68d3bda72020151141cac5ad6c6c10438339e61644a90fde1bafa849001aef1cef0311f797

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

Filesize
170B

MD5
6f79a77b6a965117c508d8c981096ad4

SHA1
32d846093bb98fd709b3dd79dab88dff286a65ba

SHA256
6953629960b781fb7ee52193bcac28a47c12cf85d2fe0968ca6509819c37a284

SHA512
0e5092adba6221be1369dde43cc7683e206ede70a868b06bf6c85a7e61ae47462bf15b6aa71f7f28904801d7deb85a38836ec1ac9032e51a0fd5b96f8687fa50

Download Submit
C:\Users\Admin\AppData\Local\7a70e759-f7af-4d63-a8bc-8694df7ca516\JaffaCakes118_f510384bacc30d8c4fb9e7b69d65b185.exe

Filesize
781KB

MD5
f510384bacc30d8c4fb9e7b69d65b185

SHA1
56f69e4ccafc32d278781c3494a43e132f63868b

SHA256
5452492faf9dddebb689c54a2f2d932de2a2b6e17e03d1c2c91f3afdc89ed164

SHA512
2a1dedc0bfa5a7520d1842ec39a964ab9d34625efef22be315720a260ac695832a862ab6357f7d9490da7308fb52c898592e9b04f1f7006f31c4b71bd1c4a333

Download Submit
C:\Users\Admin\AppData\Local\Temp\CabE16A.tmp

Filesize
70KB

MD5
49aebf8cbd62d92ac215b2923fb1b9f5

SHA1
1723be06719828dda65ad804298d0431f6aff976

SHA256
b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

SHA512
bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

Download Submit
memory/580-46-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/580-45-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/580-55-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/580-31-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/580-54-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/580-53-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/580-51-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/580-49-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/580-47-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1932-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1932-7-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1932-8-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1932-2-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/1932-28-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2980-0-0x0000000003120000-0x00000000031B1000-memory.dmp

Filesize
580KB

Download
memory/2980-1-0x0000000004990000-0x0000000004AAB000-memory.dmp

Filesize
1.1MB

Download
memory/2980-6-0x0000000003120000-0x00000000031B1000-memory.dmp

Filesize
580KB

Download