djvu | f4654e25c4c943fe4816b44863eaf95330f4203cd147d849a9d0247e72a2d84f

Analysis

max time kernel
148s
max time network
136s
platform
windows7_x64
resource
win7-20241023-en
resource tags

arch:x64arch:x86image:win7-20241023-enlocale:en-usos:windows7-x64system
submitted
25-12-2024 01:26

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General

Target

JaffaCakes118_f4654e25c4c943fe4816b44863eaf95330f4203cd147d849a9d0247e72a2d84f.exe
Size

762KB
MD5

db2b360bb7675e8c7938658adf9a0619
SHA1

1448e6aafda4fb85e5d6f88433a66a80443447f6
SHA256

f4654e25c4c943fe4816b44863eaf95330f4203cd147d849a9d0247e72a2d84f
SHA512

7e997ea3770f581838f4de907217b335fdf438355018ed9b1ff29a4c43db029990ee91f51097bb098dfa07831578da5c1de4fc9957e632ab33e4cc72c5f6f81b
SSDEEP

12288:VHxvFtDY6U0XS8F0Xq3cmQzDJjMCnZJN45awPm/1OH239SSyf8aWSFB:pxH2VXcqDJooZAdPzH2t48o

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/1676-5-0x0000000000660000-0x000000000077B000-memory.dmp	family_djvu
behavioral1/memory/2604-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2604-8-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2604-9-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2604-29-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2744-36-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2744-38-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2744-52-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2744-53-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2744-54-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2744-58-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2744-70-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2744-67-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2744-69-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2744-71-0x0000000000400000-0x0000000000537000-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
1932	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-1-5-21-1163522206-1469769407-485553996-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\a8fff8a8-258b-426c-96c8-1b9a6828f651\\JaffaCakes118_f4654e25c4c943fe4816b44863eaf95330f4203cd147d849a9d0247e72a2d84f.exe\" --AutoStart"	JaffaCakes118_f4654e25c4c943fe4816b44863eaf95330f4203cd147d849a9d0247e72a2d84f.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 1676 set thread context of 2604	1676	JaffaCakes118_f4654e25c4c943fe4816b44863eaf95330f4203cd147d849a9d0247e72a2d84f.exe	30
PID 2308 set thread context of 2744	2308	JaffaCakes118_f4654e25c4c943fe4816b44863eaf95330f4203cd147d849a9d0247e72a2d84f.exe	34

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_f4654e25c4c943fe4816b44863eaf95330f4203cd147d849a9d0247e72a2d84f.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	icacls.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_f4654e25c4c943fe4816b44863eaf95330f4203cd147d849a9d0247e72a2d84f.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_f4654e25c4c943fe4816b44863eaf95330f4203cd147d849a9d0247e72a2d84f.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_f4654e25c4c943fe4816b44863eaf95330f4203cd147d849a9d0247e72a2d84f.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2604	JaffaCakes118_f4654e25c4c943fe4816b44863eaf95330f4203cd147d849a9d0247e72a2d84f.exe
2604	JaffaCakes118_f4654e25c4c943fe4816b44863eaf95330f4203cd147d849a9d0247e72a2d84f.exe
2744	JaffaCakes118_f4654e25c4c943fe4816b44863eaf95330f4203cd147d849a9d0247e72a2d84f.exe
2744	JaffaCakes118_f4654e25c4c943fe4816b44863eaf95330f4203cd147d849a9d0247e72a2d84f.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 1676 wrote to memory of 2604	1676	JaffaCakes118_f4654e25c4c943fe4816b44863eaf95330f4203cd147d849a9d0247e72a2d84f.exe	30
PID 1676 wrote to memory of 2604	1676	JaffaCakes118_f4654e25c4c943fe4816b44863eaf95330f4203cd147d849a9d0247e72a2d84f.exe	30
PID 1676 wrote to memory of 2604	1676	JaffaCakes118_f4654e25c4c943fe4816b44863eaf95330f4203cd147d849a9d0247e72a2d84f.exe	30
PID 1676 wrote to memory of 2604	1676	JaffaCakes118_f4654e25c4c943fe4816b44863eaf95330f4203cd147d849a9d0247e72a2d84f.exe	30
PID 1676 wrote to memory of 2604	1676	JaffaCakes118_f4654e25c4c943fe4816b44863eaf95330f4203cd147d849a9d0247e72a2d84f.exe	30
PID 1676 wrote to memory of 2604	1676	JaffaCakes118_f4654e25c4c943fe4816b44863eaf95330f4203cd147d849a9d0247e72a2d84f.exe	30
PID 1676 wrote to memory of 2604	1676	JaffaCakes118_f4654e25c4c943fe4816b44863eaf95330f4203cd147d849a9d0247e72a2d84f.exe	30
PID 1676 wrote to memory of 2604	1676	JaffaCakes118_f4654e25c4c943fe4816b44863eaf95330f4203cd147d849a9d0247e72a2d84f.exe	30
PID 1676 wrote to memory of 2604	1676	JaffaCakes118_f4654e25c4c943fe4816b44863eaf95330f4203cd147d849a9d0247e72a2d84f.exe	30
PID 1676 wrote to memory of 2604	1676	JaffaCakes118_f4654e25c4c943fe4816b44863eaf95330f4203cd147d849a9d0247e72a2d84f.exe	30
PID 1676 wrote to memory of 2604	1676	JaffaCakes118_f4654e25c4c943fe4816b44863eaf95330f4203cd147d849a9d0247e72a2d84f.exe	30
PID 2604 wrote to memory of 1932	2604	JaffaCakes118_f4654e25c4c943fe4816b44863eaf95330f4203cd147d849a9d0247e72a2d84f.exe	32
PID 2604 wrote to memory of 1932	2604	JaffaCakes118_f4654e25c4c943fe4816b44863eaf95330f4203cd147d849a9d0247e72a2d84f.exe	32
PID 2604 wrote to memory of 1932	2604	JaffaCakes118_f4654e25c4c943fe4816b44863eaf95330f4203cd147d849a9d0247e72a2d84f.exe	32
PID 2604 wrote to memory of 1932	2604	JaffaCakes118_f4654e25c4c943fe4816b44863eaf95330f4203cd147d849a9d0247e72a2d84f.exe	32
PID 2604 wrote to memory of 2308	2604	JaffaCakes118_f4654e25c4c943fe4816b44863eaf95330f4203cd147d849a9d0247e72a2d84f.exe	33
PID 2604 wrote to memory of 2308	2604	JaffaCakes118_f4654e25c4c943fe4816b44863eaf95330f4203cd147d849a9d0247e72a2d84f.exe	33
PID 2604 wrote to memory of 2308	2604	JaffaCakes118_f4654e25c4c943fe4816b44863eaf95330f4203cd147d849a9d0247e72a2d84f.exe	33
PID 2604 wrote to memory of 2308	2604	JaffaCakes118_f4654e25c4c943fe4816b44863eaf95330f4203cd147d849a9d0247e72a2d84f.exe	33
PID 2308 wrote to memory of 2744	2308	JaffaCakes118_f4654e25c4c943fe4816b44863eaf95330f4203cd147d849a9d0247e72a2d84f.exe	34
PID 2308 wrote to memory of 2744	2308	JaffaCakes118_f4654e25c4c943fe4816b44863eaf95330f4203cd147d849a9d0247e72a2d84f.exe	34
PID 2308 wrote to memory of 2744	2308	JaffaCakes118_f4654e25c4c943fe4816b44863eaf95330f4203cd147d849a9d0247e72a2d84f.exe	34
PID 2308 wrote to memory of 2744	2308	JaffaCakes118_f4654e25c4c943fe4816b44863eaf95330f4203cd147d849a9d0247e72a2d84f.exe	34
PID 2308 wrote to memory of 2744	2308	JaffaCakes118_f4654e25c4c943fe4816b44863eaf95330f4203cd147d849a9d0247e72a2d84f.exe	34
PID 2308 wrote to memory of 2744	2308	JaffaCakes118_f4654e25c4c943fe4816b44863eaf95330f4203cd147d849a9d0247e72a2d84f.exe	34
PID 2308 wrote to memory of 2744	2308	JaffaCakes118_f4654e25c4c943fe4816b44863eaf95330f4203cd147d849a9d0247e72a2d84f.exe	34
PID 2308 wrote to memory of 2744	2308	JaffaCakes118_f4654e25c4c943fe4816b44863eaf95330f4203cd147d849a9d0247e72a2d84f.exe	34
PID 2308 wrote to memory of 2744	2308	JaffaCakes118_f4654e25c4c943fe4816b44863eaf95330f4203cd147d849a9d0247e72a2d84f.exe	34
PID 2308 wrote to memory of 2744	2308	JaffaCakes118_f4654e25c4c943fe4816b44863eaf95330f4203cd147d849a9d0247e72a2d84f.exe	34
PID 2308 wrote to memory of 2744	2308	JaffaCakes118_f4654e25c4c943fe4816b44863eaf95330f4203cd147d849a9d0247e72a2d84f.exe	34

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_f4654e25c4c943fe4816b44863eaf95330f4203cd147d849a9d0247e72a2d84f.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_f4654e25c4c943fe4816b44863eaf95330f4203cd147d849a9d0247e72a2d84f.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1676
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_f4654e25c4c943fe4816b44863eaf95330f4203cd147d849a9d0247e72a2d84f.exe
  "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_f4654e25c4c943fe4816b44863eaf95330f4203cd147d849a9d0247e72a2d84f.exe"
  2⤵
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:2604
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\a8fff8a8-258b-426c-96c8-1b9a6828f651" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    - System Location Discovery: System Language Discovery
    PID:1932
- - C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_f4654e25c4c943fe4816b44863eaf95330f4203cd147d849a9d0247e72a2d84f.exe
    "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_f4654e25c4c943fe4816b44863eaf95330f4203cd147d849a9d0247e72a2d84f.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2308
  - - C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_f4654e25c4c943fe4816b44863eaf95330f4203cd147d849a9d0247e72a2d84f.exe
      "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_f4654e25c4c943fe4816b44863eaf95330f4203cd147d849a9d0247e72a2d84f.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      PID:2744

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
80ebaa92474bcbaf4bc91a881aa6a852

SHA1
cdb69542c03d7874ad1398dff9645e3f85c908a8

SHA256
bea2e797a9c95255f4b7097debd601cc5407909cc2359c6fd2ca702e3a13be8e

SHA512
00f18b9510b9a54431690312bbf96a130fe53489dd0ea567fd03b0b466c6ae342a1cfcaa788967137ce5b14064adb02764bf7ea43cfa3dd0fafcfdd5a29b8b9e

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

Filesize
170B

MD5
56485f6feeeab5db68fbaa0fe83b2a7d

SHA1
422e61a43459c1fecc7dd8de24ce064734a6698e

SHA256
923dc2574acae14dae94f77c52a9690536518723fd2043f1b43375fc5f4daa46

SHA512
31afa838e702ad92637ce5c81ca78b491ac6a80a73ff2aa4b2a47f619db38537767e470de710b59ae424b644f38ee795a2db4f46bb5faf15277f421e053cf754

Download Submit
C:\Users\Admin\AppData\Local\Temp\CabBDC3.tmp

Filesize
70KB

MD5
49aebf8cbd62d92ac215b2923fb1b9f5

SHA1
1723be06719828dda65ad804298d0431f6aff976

SHA256
b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

SHA512
bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

Download Submit
C:\Users\Admin\AppData\Local\a8fff8a8-258b-426c-96c8-1b9a6828f651\JaffaCakes118_f4654e25c4c943fe4816b44863eaf95330f4203cd147d849a9d0247e72a2d84f.exe

Filesize
762KB

MD5
db2b360bb7675e8c7938658adf9a0619

SHA1
1448e6aafda4fb85e5d6f88433a66a80443447f6

SHA256
f4654e25c4c943fe4816b44863eaf95330f4203cd147d849a9d0247e72a2d84f

SHA512
7e997ea3770f581838f4de907217b335fdf438355018ed9b1ff29a4c43db029990ee91f51097bb098dfa07831578da5c1de4fc9957e632ab33e4cc72c5f6f81b

Download Submit
memory/1676-1-0x00000000002C0000-0x0000000000351000-memory.dmp

Filesize
580KB

Download
memory/1676-6-0x00000000002C0000-0x0000000000351000-memory.dmp

Filesize
580KB

Download
memory/1676-5-0x0000000000660000-0x000000000077B000-memory.dmp

Filesize
1.1MB

Download
memory/1676-0-0x00000000002C0000-0x0000000000351000-memory.dmp

Filesize
580KB

Download
memory/2308-37-0x0000000000400000-0x00000000004C9000-memory.dmp

Filesize
804KB

Download
memory/2308-31-0x0000000000400000-0x00000000004C9000-memory.dmp

Filesize
804KB

Download
memory/2308-30-0x0000000000220000-0x00000000002B1000-memory.dmp

Filesize
580KB

Download
memory/2604-29-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2604-9-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2604-8-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2604-2-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2604-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2744-38-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2744-36-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2744-52-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2744-53-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2744-54-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2744-58-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2744-70-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2744-67-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2744-69-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2744-71-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download