djvu | 61a8fe867b1161f06fbdb841f61224e5b9971a6dcdf500a0eb8adaaf6723b975

Analysis

max time kernel
148s
max time network
125s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
25-12-2024 06:09

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General

Target

JaffaCakes118_61a8fe867b1161f06fbdb841f61224e5b9971a6dcdf500a0eb8adaaf6723b975.exe
Size

762KB
MD5

60bf758f7aa7fdc16626f46870ce3fc2
SHA1

93e73126d1e6f2a3bf2b735f32ec38d03d14ca21
SHA256

61a8fe867b1161f06fbdb841f61224e5b9971a6dcdf500a0eb8adaaf6723b975
SHA512

0aa2f21a58395cc77633f233a14060e9623bd80a1d83de9734df98c1b0891cbf641316df3164b5a71e6b16b1e38fdbe278c17d7e5fac5c56e212d8c90c92e5f4
SSDEEP

12288:LMEIDbdEfQcBtoJWTs9SjvucDjDCwpCp4AJsJYaZNrtSjXadwjb:LLI9EtsmeqjTCwk6QsaYrIMwj

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

http://fuyt.org/test1/get.php

Attributes

extension
.dwqs
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: 0450Jbdio

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 15 IoCs

resource	yara_rule
behavioral1/memory/2388-2-0x0000000001D20000-0x0000000001E3B000-memory.dmp	family_djvu
behavioral1/memory/2336-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2336-8-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2336-9-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2336-25-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2768-34-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2768-35-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2768-47-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2768-48-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2768-49-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2768-57-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2768-63-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2768-62-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2768-60-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2768-64-0x0000000000400000-0x0000000000537000-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
2720	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-1-5-21-3533259084-2542256011-65585152-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\14cff295-8e0d-4802-a9fb-6504ca6311e5\\JaffaCakes118_61a8fe867b1161f06fbdb841f61224e5b9971a6dcdf500a0eb8adaaf6723b975.exe\" --AutoStart"	JaffaCakes118_61a8fe867b1161f06fbdb841f61224e5b9971a6dcdf500a0eb8adaaf6723b975.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 2388 set thread context of 2336	2388	JaffaCakes118_61a8fe867b1161f06fbdb841f61224e5b9971a6dcdf500a0eb8adaaf6723b975.exe	30
PID 2900 set thread context of 2768	2900	JaffaCakes118_61a8fe867b1161f06fbdb841f61224e5b9971a6dcdf500a0eb8adaaf6723b975.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_61a8fe867b1161f06fbdb841f61224e5b9971a6dcdf500a0eb8adaaf6723b975.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_61a8fe867b1161f06fbdb841f61224e5b9971a6dcdf500a0eb8adaaf6723b975.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	icacls.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_61a8fe867b1161f06fbdb841f61224e5b9971a6dcdf500a0eb8adaaf6723b975.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_61a8fe867b1161f06fbdb841f61224e5b9971a6dcdf500a0eb8adaaf6723b975.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2336	JaffaCakes118_61a8fe867b1161f06fbdb841f61224e5b9971a6dcdf500a0eb8adaaf6723b975.exe
2336	JaffaCakes118_61a8fe867b1161f06fbdb841f61224e5b9971a6dcdf500a0eb8adaaf6723b975.exe
2768	JaffaCakes118_61a8fe867b1161f06fbdb841f61224e5b9971a6dcdf500a0eb8adaaf6723b975.exe
2768	JaffaCakes118_61a8fe867b1161f06fbdb841f61224e5b9971a6dcdf500a0eb8adaaf6723b975.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2388 wrote to memory of 2336	2388	JaffaCakes118_61a8fe867b1161f06fbdb841f61224e5b9971a6dcdf500a0eb8adaaf6723b975.exe	30
PID 2388 wrote to memory of 2336	2388	JaffaCakes118_61a8fe867b1161f06fbdb841f61224e5b9971a6dcdf500a0eb8adaaf6723b975.exe	30
PID 2388 wrote to memory of 2336	2388	JaffaCakes118_61a8fe867b1161f06fbdb841f61224e5b9971a6dcdf500a0eb8adaaf6723b975.exe	30
PID 2388 wrote to memory of 2336	2388	JaffaCakes118_61a8fe867b1161f06fbdb841f61224e5b9971a6dcdf500a0eb8adaaf6723b975.exe	30
PID 2388 wrote to memory of 2336	2388	JaffaCakes118_61a8fe867b1161f06fbdb841f61224e5b9971a6dcdf500a0eb8adaaf6723b975.exe	30
PID 2388 wrote to memory of 2336	2388	JaffaCakes118_61a8fe867b1161f06fbdb841f61224e5b9971a6dcdf500a0eb8adaaf6723b975.exe	30
PID 2388 wrote to memory of 2336	2388	JaffaCakes118_61a8fe867b1161f06fbdb841f61224e5b9971a6dcdf500a0eb8adaaf6723b975.exe	30
PID 2388 wrote to memory of 2336	2388	JaffaCakes118_61a8fe867b1161f06fbdb841f61224e5b9971a6dcdf500a0eb8adaaf6723b975.exe	30
PID 2388 wrote to memory of 2336	2388	JaffaCakes118_61a8fe867b1161f06fbdb841f61224e5b9971a6dcdf500a0eb8adaaf6723b975.exe	30
PID 2388 wrote to memory of 2336	2388	JaffaCakes118_61a8fe867b1161f06fbdb841f61224e5b9971a6dcdf500a0eb8adaaf6723b975.exe	30
PID 2388 wrote to memory of 2336	2388	JaffaCakes118_61a8fe867b1161f06fbdb841f61224e5b9971a6dcdf500a0eb8adaaf6723b975.exe	30
PID 2336 wrote to memory of 2720	2336	JaffaCakes118_61a8fe867b1161f06fbdb841f61224e5b9971a6dcdf500a0eb8adaaf6723b975.exe	32
PID 2336 wrote to memory of 2720	2336	JaffaCakes118_61a8fe867b1161f06fbdb841f61224e5b9971a6dcdf500a0eb8adaaf6723b975.exe	32
PID 2336 wrote to memory of 2720	2336	JaffaCakes118_61a8fe867b1161f06fbdb841f61224e5b9971a6dcdf500a0eb8adaaf6723b975.exe	32
PID 2336 wrote to memory of 2720	2336	JaffaCakes118_61a8fe867b1161f06fbdb841f61224e5b9971a6dcdf500a0eb8adaaf6723b975.exe	32
PID 2336 wrote to memory of 2900	2336	JaffaCakes118_61a8fe867b1161f06fbdb841f61224e5b9971a6dcdf500a0eb8adaaf6723b975.exe	33
PID 2336 wrote to memory of 2900	2336	JaffaCakes118_61a8fe867b1161f06fbdb841f61224e5b9971a6dcdf500a0eb8adaaf6723b975.exe	33
PID 2336 wrote to memory of 2900	2336	JaffaCakes118_61a8fe867b1161f06fbdb841f61224e5b9971a6dcdf500a0eb8adaaf6723b975.exe	33
PID 2336 wrote to memory of 2900	2336	JaffaCakes118_61a8fe867b1161f06fbdb841f61224e5b9971a6dcdf500a0eb8adaaf6723b975.exe	33
PID 2900 wrote to memory of 2768	2900	JaffaCakes118_61a8fe867b1161f06fbdb841f61224e5b9971a6dcdf500a0eb8adaaf6723b975.exe	34
PID 2900 wrote to memory of 2768	2900	JaffaCakes118_61a8fe867b1161f06fbdb841f61224e5b9971a6dcdf500a0eb8adaaf6723b975.exe	34
PID 2900 wrote to memory of 2768	2900	JaffaCakes118_61a8fe867b1161f06fbdb841f61224e5b9971a6dcdf500a0eb8adaaf6723b975.exe	34
PID 2900 wrote to memory of 2768	2900	JaffaCakes118_61a8fe867b1161f06fbdb841f61224e5b9971a6dcdf500a0eb8adaaf6723b975.exe	34
PID 2900 wrote to memory of 2768	2900	JaffaCakes118_61a8fe867b1161f06fbdb841f61224e5b9971a6dcdf500a0eb8adaaf6723b975.exe	34
PID 2900 wrote to memory of 2768	2900	JaffaCakes118_61a8fe867b1161f06fbdb841f61224e5b9971a6dcdf500a0eb8adaaf6723b975.exe	34
PID 2900 wrote to memory of 2768	2900	JaffaCakes118_61a8fe867b1161f06fbdb841f61224e5b9971a6dcdf500a0eb8adaaf6723b975.exe	34
PID 2900 wrote to memory of 2768	2900	JaffaCakes118_61a8fe867b1161f06fbdb841f61224e5b9971a6dcdf500a0eb8adaaf6723b975.exe	34
PID 2900 wrote to memory of 2768	2900	JaffaCakes118_61a8fe867b1161f06fbdb841f61224e5b9971a6dcdf500a0eb8adaaf6723b975.exe	34
PID 2900 wrote to memory of 2768	2900	JaffaCakes118_61a8fe867b1161f06fbdb841f61224e5b9971a6dcdf500a0eb8adaaf6723b975.exe	34
PID 2900 wrote to memory of 2768	2900	JaffaCakes118_61a8fe867b1161f06fbdb841f61224e5b9971a6dcdf500a0eb8adaaf6723b975.exe	34

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_61a8fe867b1161f06fbdb841f61224e5b9971a6dcdf500a0eb8adaaf6723b975.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_61a8fe867b1161f06fbdb841f61224e5b9971a6dcdf500a0eb8adaaf6723b975.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2388
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_61a8fe867b1161f06fbdb841f61224e5b9971a6dcdf500a0eb8adaaf6723b975.exe
  "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_61a8fe867b1161f06fbdb841f61224e5b9971a6dcdf500a0eb8adaaf6723b975.exe"
  2⤵
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:2336
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\14cff295-8e0d-4802-a9fb-6504ca6311e5" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    - System Location Discovery: System Language Discovery
    PID:2720
- - C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_61a8fe867b1161f06fbdb841f61224e5b9971a6dcdf500a0eb8adaaf6723b975.exe
    "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_61a8fe867b1161f06fbdb841f61224e5b9971a6dcdf500a0eb8adaaf6723b975.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2900
  - - C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_61a8fe867b1161f06fbdb841f61224e5b9971a6dcdf500a0eb8adaaf6723b975.exe
      "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_61a8fe867b1161f06fbdb841f61224e5b9971a6dcdf500a0eb8adaaf6723b975.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      PID:2768

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
79c9620193f7052aea301924d3c944e2

SHA1
de30a620a64718ed2812ab2e8c0466c5f8f44720

SHA256
84715f0e7413d2e95444250f948a63376da24cc4b59f1656c09b75e00a8aafc8

SHA512
8044c6d7b101d0cc148a26e5fffb2bb7dd960dcba1809d633c79f005fc6ef9cb30744ef502bf056bbb666b3bded410b89a1024f927a575b06b7a41c98ce39ad7

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

Filesize
170B

MD5
32137fd8da3a808e9682459ae1489a27

SHA1
1668657565c60e29343984b309f32ed88a6fd5e5

SHA256
b24764933cf315d53416d651cdf0df677d16961007b638a0b92586f8fdc54e87

SHA512
4e4cc955178887f1ec36cdc2f5e367acb02eab5356ae1d9c9674fa1a07828c89734cf732364e54fbc637adb454384e27a424dd309b8b0127641f784f3effe3e0

Download Submit
C:\Users\Admin\AppData\Local\14cff295-8e0d-4802-a9fb-6504ca6311e5\JaffaCakes118_61a8fe867b1161f06fbdb841f61224e5b9971a6dcdf500a0eb8adaaf6723b975.exe

Filesize
762KB

MD5
60bf758f7aa7fdc16626f46870ce3fc2

SHA1
93e73126d1e6f2a3bf2b735f32ec38d03d14ca21

SHA256
61a8fe867b1161f06fbdb841f61224e5b9971a6dcdf500a0eb8adaaf6723b975

SHA512
0aa2f21a58395cc77633f233a14060e9623bd80a1d83de9734df98c1b0891cbf641316df3164b5a71e6b16b1e38fdbe278c17d7e5fac5c56e212d8c90c92e5f4

Download Submit
C:\Users\Admin\AppData\Local\Temp\Cab9F2C.tmp

Filesize
70KB

MD5
49aebf8cbd62d92ac215b2923fb1b9f5

SHA1
1723be06719828dda65ad804298d0431f6aff976

SHA256
b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

SHA512
bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

Download Submit
memory/2336-8-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2336-9-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2336-25-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2336-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2336-3-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2388-7-0x0000000000520000-0x00000000005B2000-memory.dmp

Filesize
584KB

Download
memory/2388-2-0x0000000001D20000-0x0000000001E3B000-memory.dmp

Filesize
1.1MB

Download
memory/2388-1-0x0000000000520000-0x00000000005B2000-memory.dmp

Filesize
584KB

Download
memory/2388-0-0x0000000000520000-0x00000000005B2000-memory.dmp

Filesize
584KB

Download
memory/2768-35-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2768-34-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2768-47-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2768-48-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2768-49-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2768-57-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2768-63-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2768-62-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2768-60-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2768-64-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2900-33-0x0000000000400000-0x00000000004C9000-memory.dmp

Filesize
804KB

Download
memory/2900-28-0x0000000000400000-0x00000000004C9000-memory.dmp

Filesize
804KB

Download
memory/2900-27-0x0000000000220000-0x00000000002B2000-memory.dmp

Filesize
584KB

Download