djvu | 4f6d6341563673231a3ba83b0b072c299715d03bc1c4e0f551deaf3d7fbed895

Analysis

max time kernel
146s
max time network
127s
platform
windows7_x64
resource
win7-20240729-en
resource tags

arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system
submitted
23-12-2024 19:05

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General

Target

JaffaCakes118_4f6d6341563673231a3ba83b0b072c299715d03bc1c4e0f551deaf3d7fbed895.exe
Size

838KB
MD5

0c57d89bf577598602a4ec0bbe4c0e9f
SHA1

344f99afb3c75a636fb49896fd8d3276ddd10f53
SHA256

4f6d6341563673231a3ba83b0b072c299715d03bc1c4e0f551deaf3d7fbed895
SHA512

c96479ca924628f36373a730e83d9526a6e87668d17b9ec869f58cae913a03109111e55def952528d83f9be3691659323c9a4e23b46a9c057b7cce21173d358e
SSDEEP

24576:r8vlARmAIAHZtVbS7KodJUeNd8ymytfAPaKB:ov+RmAIAHnV+NdgQ

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

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
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-c565B1ILoZ 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: 0453Jbdio

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 15 IoCs

resource	yara_rule
behavioral1/memory/1216-2-0x0000000001E70000-0x0000000001F8B000-memory.dmp	family_djvu
behavioral1/memory/2628-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2628-8-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2628-9-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2628-29-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1328-37-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1328-38-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1328-52-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1328-51-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1328-53-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1328-61-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1328-64-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1328-67-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1328-66-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1328-68-0x0000000000400000-0x0000000000537000-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
2564	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-1-5-21-2703099537-420551529-3771253338-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\40bbb82f-5308-4b1b-8c31-c5712d2f67f2\\JaffaCakes118_4f6d6341563673231a3ba83b0b072c299715d03bc1c4e0f551deaf3d7fbed895.exe\" --AutoStart"	JaffaCakes118_4f6d6341563673231a3ba83b0b072c299715d03bc1c4e0f551deaf3d7fbed895.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
3	api.2ip.ua
4	api.2ip.ua
9	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 1216 set thread context of 2628	1216	JaffaCakes118_4f6d6341563673231a3ba83b0b072c299715d03bc1c4e0f551deaf3d7fbed895.exe	29
PID 2808 set thread context of 1328	2808	JaffaCakes118_4f6d6341563673231a3ba83b0b072c299715d03bc1c4e0f551deaf3d7fbed895.exe	32

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	icacls.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_4f6d6341563673231a3ba83b0b072c299715d03bc1c4e0f551deaf3d7fbed895.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_4f6d6341563673231a3ba83b0b072c299715d03bc1c4e0f551deaf3d7fbed895.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_4f6d6341563673231a3ba83b0b072c299715d03bc1c4e0f551deaf3d7fbed895.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_4f6d6341563673231a3ba83b0b072c299715d03bc1c4e0f551deaf3d7fbed895.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2628	JaffaCakes118_4f6d6341563673231a3ba83b0b072c299715d03bc1c4e0f551deaf3d7fbed895.exe
2628	JaffaCakes118_4f6d6341563673231a3ba83b0b072c299715d03bc1c4e0f551deaf3d7fbed895.exe
1328	JaffaCakes118_4f6d6341563673231a3ba83b0b072c299715d03bc1c4e0f551deaf3d7fbed895.exe
1328	JaffaCakes118_4f6d6341563673231a3ba83b0b072c299715d03bc1c4e0f551deaf3d7fbed895.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 1216 wrote to memory of 2628	1216	JaffaCakes118_4f6d6341563673231a3ba83b0b072c299715d03bc1c4e0f551deaf3d7fbed895.exe	29
PID 1216 wrote to memory of 2628	1216	JaffaCakes118_4f6d6341563673231a3ba83b0b072c299715d03bc1c4e0f551deaf3d7fbed895.exe	29
PID 1216 wrote to memory of 2628	1216	JaffaCakes118_4f6d6341563673231a3ba83b0b072c299715d03bc1c4e0f551deaf3d7fbed895.exe	29
PID 1216 wrote to memory of 2628	1216	JaffaCakes118_4f6d6341563673231a3ba83b0b072c299715d03bc1c4e0f551deaf3d7fbed895.exe	29
PID 1216 wrote to memory of 2628	1216	JaffaCakes118_4f6d6341563673231a3ba83b0b072c299715d03bc1c4e0f551deaf3d7fbed895.exe	29
PID 1216 wrote to memory of 2628	1216	JaffaCakes118_4f6d6341563673231a3ba83b0b072c299715d03bc1c4e0f551deaf3d7fbed895.exe	29
PID 1216 wrote to memory of 2628	1216	JaffaCakes118_4f6d6341563673231a3ba83b0b072c299715d03bc1c4e0f551deaf3d7fbed895.exe	29
PID 1216 wrote to memory of 2628	1216	JaffaCakes118_4f6d6341563673231a3ba83b0b072c299715d03bc1c4e0f551deaf3d7fbed895.exe	29
PID 1216 wrote to memory of 2628	1216	JaffaCakes118_4f6d6341563673231a3ba83b0b072c299715d03bc1c4e0f551deaf3d7fbed895.exe	29
PID 1216 wrote to memory of 2628	1216	JaffaCakes118_4f6d6341563673231a3ba83b0b072c299715d03bc1c4e0f551deaf3d7fbed895.exe	29
PID 1216 wrote to memory of 2628	1216	JaffaCakes118_4f6d6341563673231a3ba83b0b072c299715d03bc1c4e0f551deaf3d7fbed895.exe	29
PID 2628 wrote to memory of 2564	2628	JaffaCakes118_4f6d6341563673231a3ba83b0b072c299715d03bc1c4e0f551deaf3d7fbed895.exe	30
PID 2628 wrote to memory of 2564	2628	JaffaCakes118_4f6d6341563673231a3ba83b0b072c299715d03bc1c4e0f551deaf3d7fbed895.exe	30
PID 2628 wrote to memory of 2564	2628	JaffaCakes118_4f6d6341563673231a3ba83b0b072c299715d03bc1c4e0f551deaf3d7fbed895.exe	30
PID 2628 wrote to memory of 2564	2628	JaffaCakes118_4f6d6341563673231a3ba83b0b072c299715d03bc1c4e0f551deaf3d7fbed895.exe	30
PID 2628 wrote to memory of 2808	2628	JaffaCakes118_4f6d6341563673231a3ba83b0b072c299715d03bc1c4e0f551deaf3d7fbed895.exe	31
PID 2628 wrote to memory of 2808	2628	JaffaCakes118_4f6d6341563673231a3ba83b0b072c299715d03bc1c4e0f551deaf3d7fbed895.exe	31
PID 2628 wrote to memory of 2808	2628	JaffaCakes118_4f6d6341563673231a3ba83b0b072c299715d03bc1c4e0f551deaf3d7fbed895.exe	31
PID 2628 wrote to memory of 2808	2628	JaffaCakes118_4f6d6341563673231a3ba83b0b072c299715d03bc1c4e0f551deaf3d7fbed895.exe	31
PID 2808 wrote to memory of 1328	2808	JaffaCakes118_4f6d6341563673231a3ba83b0b072c299715d03bc1c4e0f551deaf3d7fbed895.exe	32
PID 2808 wrote to memory of 1328	2808	JaffaCakes118_4f6d6341563673231a3ba83b0b072c299715d03bc1c4e0f551deaf3d7fbed895.exe	32
PID 2808 wrote to memory of 1328	2808	JaffaCakes118_4f6d6341563673231a3ba83b0b072c299715d03bc1c4e0f551deaf3d7fbed895.exe	32
PID 2808 wrote to memory of 1328	2808	JaffaCakes118_4f6d6341563673231a3ba83b0b072c299715d03bc1c4e0f551deaf3d7fbed895.exe	32
PID 2808 wrote to memory of 1328	2808	JaffaCakes118_4f6d6341563673231a3ba83b0b072c299715d03bc1c4e0f551deaf3d7fbed895.exe	32
PID 2808 wrote to memory of 1328	2808	JaffaCakes118_4f6d6341563673231a3ba83b0b072c299715d03bc1c4e0f551deaf3d7fbed895.exe	32
PID 2808 wrote to memory of 1328	2808	JaffaCakes118_4f6d6341563673231a3ba83b0b072c299715d03bc1c4e0f551deaf3d7fbed895.exe	32
PID 2808 wrote to memory of 1328	2808	JaffaCakes118_4f6d6341563673231a3ba83b0b072c299715d03bc1c4e0f551deaf3d7fbed895.exe	32
PID 2808 wrote to memory of 1328	2808	JaffaCakes118_4f6d6341563673231a3ba83b0b072c299715d03bc1c4e0f551deaf3d7fbed895.exe	32
PID 2808 wrote to memory of 1328	2808	JaffaCakes118_4f6d6341563673231a3ba83b0b072c299715d03bc1c4e0f551deaf3d7fbed895.exe	32
PID 2808 wrote to memory of 1328	2808	JaffaCakes118_4f6d6341563673231a3ba83b0b072c299715d03bc1c4e0f551deaf3d7fbed895.exe	32

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4f6d6341563673231a3ba83b0b072c299715d03bc1c4e0f551deaf3d7fbed895.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4f6d6341563673231a3ba83b0b072c299715d03bc1c4e0f551deaf3d7fbed895.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1216
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4f6d6341563673231a3ba83b0b072c299715d03bc1c4e0f551deaf3d7fbed895.exe
  "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4f6d6341563673231a3ba83b0b072c299715d03bc1c4e0f551deaf3d7fbed895.exe"
  2⤵
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:2628
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\40bbb82f-5308-4b1b-8c31-c5712d2f67f2" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    - System Location Discovery: System Language Discovery
    PID:2564
- - C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4f6d6341563673231a3ba83b0b072c299715d03bc1c4e0f551deaf3d7fbed895.exe
    "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4f6d6341563673231a3ba83b0b072c299715d03bc1c4e0f551deaf3d7fbed895.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2808
  - - C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4f6d6341563673231a3ba83b0b072c299715d03bc1c4e0f551deaf3d7fbed895.exe
      "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4f6d6341563673231a3ba83b0b072c299715d03bc1c4e0f551deaf3d7fbed895.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      PID:1328

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
8a4bef87d2deb9de5628d321817fb4b5

SHA1
fa86cfda8e8615f927377b395835ac9ef82f090c

SHA256
4ca38557af92275c00c96e8c5c64f27c1b44ce26683c99026630474903b2f074

SHA512
281b59e42a716bbf701bae15f56e86cdd90f2a97b4d06cfc0059f89bee602a6dff4fb858b6fe6e2f22658eddaef414c605adde5393fcd49867f338acb30c3dc4

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015

Filesize
342B

MD5
6c27aeb28b96c84a43550099c4828884

SHA1
d0166acd569c6e5c2e238ee19dc714f156976c7e

SHA256
91436565406c19817512f9603cc96ed0b15c52e8c19cdb48596bc6c6bbe893b2

SHA512
9abe83594f2cfb32f34b9167fe0026948f2de22ecd50f811de324006df3c98a33222329320780dfb39d50a534ca053ae064dc788cd64fdbb022eddc3f42c5215

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

Filesize
170B

MD5
3293ed30416a9cd0767088a196e137f1

SHA1
0127acac0d0adcb5bca392761131cc8e2ae450b0

SHA256
1d6c8a2f01b1ce771595fb5ea29da98c9b07d7c1be0702d3247b21de0d79dfdb

SHA512
78beba9d11011a5f3fcb6198c3e50271d75cf6e960f56fc04c56cf461accd8ca14133d3dbf3a85914848cd191fbfb4a8f3ea31ac9f2b8fb2222b3471b58fe6d0

Download Submit
C:\Users\Admin\AppData\Local\40bbb82f-5308-4b1b-8c31-c5712d2f67f2\JaffaCakes118_4f6d6341563673231a3ba83b0b072c299715d03bc1c4e0f551deaf3d7fbed895.exe

Filesize
838KB

MD5
0c57d89bf577598602a4ec0bbe4c0e9f

SHA1
344f99afb3c75a636fb49896fd8d3276ddd10f53

SHA256
4f6d6341563673231a3ba83b0b072c299715d03bc1c4e0f551deaf3d7fbed895

SHA512
c96479ca924628f36373a730e83d9526a6e87668d17b9ec869f58cae913a03109111e55def952528d83f9be3691659323c9a4e23b46a9c057b7cce21173d358e

Download Submit
C:\Users\Admin\AppData\Local\Temp\Cab82D6.tmp

Filesize
70KB

MD5
49aebf8cbd62d92ac215b2923fb1b9f5

SHA1
1723be06719828dda65ad804298d0431f6aff976

SHA256
b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

SHA512
bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

Download Submit
memory/1216-1-0x00000000002B0000-0x0000000000341000-memory.dmp

Filesize
580KB

Download
memory/1216-2-0x0000000001E70000-0x0000000001F8B000-memory.dmp

Filesize
1.1MB

Download
memory/1216-0-0x00000000002B0000-0x0000000000341000-memory.dmp

Filesize
580KB

Download
memory/1216-7-0x00000000002B0000-0x0000000000341000-memory.dmp

Filesize
580KB

Download
memory/1328-52-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1328-51-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1328-37-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1328-38-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1328-68-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1328-66-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1328-67-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1328-64-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1328-61-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1328-53-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2628-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2628-3-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2628-8-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2628-9-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2628-29-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2808-36-0x0000000000400000-0x00000000004DD000-memory.dmp

Filesize
884KB

Download
memory/2808-30-0x0000000000550000-0x00000000005E1000-memory.dmp

Filesize
580KB

Download
memory/2808-31-0x0000000000400000-0x00000000004DD000-memory.dmp

Filesize
884KB

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