djvu | 28991f0b0323363b19cea3184f8bfede6de600e61ae3763c05a55db2c6ae352d

Analysis

max time kernel
145s
max time network
132s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
29-12-2024 03:09

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General

Target

JaffaCakes118_28991f0b0323363b19cea3184f8bfede6de600e61ae3763c05a55db2c6ae352d.exe
Size

767KB
MD5

520a9e0aab30e7ba475eeaa7b8e51e1c
SHA1

cd735396941cec394eec00c8849a18fa6e10ade9
SHA256

28991f0b0323363b19cea3184f8bfede6de600e61ae3763c05a55db2c6ae352d
SHA512

6d01df7f6933b071f54dd93b3e83d59cbb6f8325a6a0448ebcef94bddc75d0468eb020dcf4a89eeb6974b2f9a30b5a893ee9711c63e1a2668936833ce21b9d95
SSDEEP

12288:wHh5UiA4FgFp7aFIGUlP3M7b5QYyWBqw+AjZ181tsu6XE2Ux4:w3Umg2GDlwTqw+ui1i5b

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 15 IoCs

resource	yara_rule
behavioral1/memory/1724-2-0x0000000001DC0000-0x0000000001EDB000-memory.dmp	family_djvu
behavioral1/memory/1876-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1876-8-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1876-9-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1876-27-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2776-35-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2776-36-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2776-49-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2776-48-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2776-50-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2776-54-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2776-63-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2776-65-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2776-66-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2776-67-0x0000000000400000-0x0000000000537000-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
2728	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-1-5-21-4177215427-74451935-3209572229-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\9173f3ce-c03c-4985-a3e7-e255b7fd9277\\JaffaCakes118_28991f0b0323363b19cea3184f8bfede6de600e61ae3763c05a55db2c6ae352d.exe\" --AutoStart"	JaffaCakes118_28991f0b0323363b19cea3184f8bfede6de600e61ae3763c05a55db2c6ae352d.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 1724 set thread context of 1876	1724	JaffaCakes118_28991f0b0323363b19cea3184f8bfede6de600e61ae3763c05a55db2c6ae352d.exe	30
PID 2832 set thread context of 2776	2832	JaffaCakes118_28991f0b0323363b19cea3184f8bfede6de600e61ae3763c05a55db2c6ae352d.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_28991f0b0323363b19cea3184f8bfede6de600e61ae3763c05a55db2c6ae352d.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_28991f0b0323363b19cea3184f8bfede6de600e61ae3763c05a55db2c6ae352d.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	icacls.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_28991f0b0323363b19cea3184f8bfede6de600e61ae3763c05a55db2c6ae352d.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_28991f0b0323363b19cea3184f8bfede6de600e61ae3763c05a55db2c6ae352d.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
1876	JaffaCakes118_28991f0b0323363b19cea3184f8bfede6de600e61ae3763c05a55db2c6ae352d.exe
1876	JaffaCakes118_28991f0b0323363b19cea3184f8bfede6de600e61ae3763c05a55db2c6ae352d.exe
2776	JaffaCakes118_28991f0b0323363b19cea3184f8bfede6de600e61ae3763c05a55db2c6ae352d.exe
2776	JaffaCakes118_28991f0b0323363b19cea3184f8bfede6de600e61ae3763c05a55db2c6ae352d.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 1724 wrote to memory of 1876	1724	JaffaCakes118_28991f0b0323363b19cea3184f8bfede6de600e61ae3763c05a55db2c6ae352d.exe	30
PID 1724 wrote to memory of 1876	1724	JaffaCakes118_28991f0b0323363b19cea3184f8bfede6de600e61ae3763c05a55db2c6ae352d.exe	30
PID 1724 wrote to memory of 1876	1724	JaffaCakes118_28991f0b0323363b19cea3184f8bfede6de600e61ae3763c05a55db2c6ae352d.exe	30
PID 1724 wrote to memory of 1876	1724	JaffaCakes118_28991f0b0323363b19cea3184f8bfede6de600e61ae3763c05a55db2c6ae352d.exe	30
PID 1724 wrote to memory of 1876	1724	JaffaCakes118_28991f0b0323363b19cea3184f8bfede6de600e61ae3763c05a55db2c6ae352d.exe	30
PID 1724 wrote to memory of 1876	1724	JaffaCakes118_28991f0b0323363b19cea3184f8bfede6de600e61ae3763c05a55db2c6ae352d.exe	30
PID 1724 wrote to memory of 1876	1724	JaffaCakes118_28991f0b0323363b19cea3184f8bfede6de600e61ae3763c05a55db2c6ae352d.exe	30
PID 1724 wrote to memory of 1876	1724	JaffaCakes118_28991f0b0323363b19cea3184f8bfede6de600e61ae3763c05a55db2c6ae352d.exe	30
PID 1724 wrote to memory of 1876	1724	JaffaCakes118_28991f0b0323363b19cea3184f8bfede6de600e61ae3763c05a55db2c6ae352d.exe	30
PID 1724 wrote to memory of 1876	1724	JaffaCakes118_28991f0b0323363b19cea3184f8bfede6de600e61ae3763c05a55db2c6ae352d.exe	30
PID 1724 wrote to memory of 1876	1724	JaffaCakes118_28991f0b0323363b19cea3184f8bfede6de600e61ae3763c05a55db2c6ae352d.exe	30
PID 1876 wrote to memory of 2728	1876	JaffaCakes118_28991f0b0323363b19cea3184f8bfede6de600e61ae3763c05a55db2c6ae352d.exe	32
PID 1876 wrote to memory of 2728	1876	JaffaCakes118_28991f0b0323363b19cea3184f8bfede6de600e61ae3763c05a55db2c6ae352d.exe	32
PID 1876 wrote to memory of 2728	1876	JaffaCakes118_28991f0b0323363b19cea3184f8bfede6de600e61ae3763c05a55db2c6ae352d.exe	32
PID 1876 wrote to memory of 2728	1876	JaffaCakes118_28991f0b0323363b19cea3184f8bfede6de600e61ae3763c05a55db2c6ae352d.exe	32
PID 1876 wrote to memory of 2832	1876	JaffaCakes118_28991f0b0323363b19cea3184f8bfede6de600e61ae3763c05a55db2c6ae352d.exe	33
PID 1876 wrote to memory of 2832	1876	JaffaCakes118_28991f0b0323363b19cea3184f8bfede6de600e61ae3763c05a55db2c6ae352d.exe	33
PID 1876 wrote to memory of 2832	1876	JaffaCakes118_28991f0b0323363b19cea3184f8bfede6de600e61ae3763c05a55db2c6ae352d.exe	33
PID 1876 wrote to memory of 2832	1876	JaffaCakes118_28991f0b0323363b19cea3184f8bfede6de600e61ae3763c05a55db2c6ae352d.exe	33
PID 2832 wrote to memory of 2776	2832	JaffaCakes118_28991f0b0323363b19cea3184f8bfede6de600e61ae3763c05a55db2c6ae352d.exe	34
PID 2832 wrote to memory of 2776	2832	JaffaCakes118_28991f0b0323363b19cea3184f8bfede6de600e61ae3763c05a55db2c6ae352d.exe	34
PID 2832 wrote to memory of 2776	2832	JaffaCakes118_28991f0b0323363b19cea3184f8bfede6de600e61ae3763c05a55db2c6ae352d.exe	34
PID 2832 wrote to memory of 2776	2832	JaffaCakes118_28991f0b0323363b19cea3184f8bfede6de600e61ae3763c05a55db2c6ae352d.exe	34
PID 2832 wrote to memory of 2776	2832	JaffaCakes118_28991f0b0323363b19cea3184f8bfede6de600e61ae3763c05a55db2c6ae352d.exe	34
PID 2832 wrote to memory of 2776	2832	JaffaCakes118_28991f0b0323363b19cea3184f8bfede6de600e61ae3763c05a55db2c6ae352d.exe	34
PID 2832 wrote to memory of 2776	2832	JaffaCakes118_28991f0b0323363b19cea3184f8bfede6de600e61ae3763c05a55db2c6ae352d.exe	34
PID 2832 wrote to memory of 2776	2832	JaffaCakes118_28991f0b0323363b19cea3184f8bfede6de600e61ae3763c05a55db2c6ae352d.exe	34
PID 2832 wrote to memory of 2776	2832	JaffaCakes118_28991f0b0323363b19cea3184f8bfede6de600e61ae3763c05a55db2c6ae352d.exe	34
PID 2832 wrote to memory of 2776	2832	JaffaCakes118_28991f0b0323363b19cea3184f8bfede6de600e61ae3763c05a55db2c6ae352d.exe	34
PID 2832 wrote to memory of 2776	2832	JaffaCakes118_28991f0b0323363b19cea3184f8bfede6de600e61ae3763c05a55db2c6ae352d.exe	34

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_28991f0b0323363b19cea3184f8bfede6de600e61ae3763c05a55db2c6ae352d.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_28991f0b0323363b19cea3184f8bfede6de600e61ae3763c05a55db2c6ae352d.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1724
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_28991f0b0323363b19cea3184f8bfede6de600e61ae3763c05a55db2c6ae352d.exe
  "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_28991f0b0323363b19cea3184f8bfede6de600e61ae3763c05a55db2c6ae352d.exe"
  2⤵
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:1876
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\9173f3ce-c03c-4985-a3e7-e255b7fd9277" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    - System Location Discovery: System Language Discovery
    PID:2728
- - C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_28991f0b0323363b19cea3184f8bfede6de600e61ae3763c05a55db2c6ae352d.exe
    "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_28991f0b0323363b19cea3184f8bfede6de600e61ae3763c05a55db2c6ae352d.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2832
  - - C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_28991f0b0323363b19cea3184f8bfede6de600e61ae3763c05a55db2c6ae352d.exe
      "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_28991f0b0323363b19cea3184f8bfede6de600e61ae3763c05a55db2c6ae352d.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      PID:2776

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
b7b525d9fdd3b3b67d6ee2c15ea59ec3

SHA1
a13886a51975725588240f47ae4b511ce42b8fd2

SHA256
77d93f1720fd5f46972cef52849e343f64afafa914235bbe2c7d3af42351e6a3

SHA512
3c63b72ad00890716db03eccaf68b088ec7fcc7b2c5b23ff49d9dff710530ecfeba4c44846e862f9c06327ad274f1df61e5955618515fcb40d76f100a732c6db

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

Filesize
170B

MD5
d5cadc56d48ae502b0baddb6abbdb055

SHA1
f2d5f5c05ca1cacd9877581eb818a976e4acac41

SHA256
424869f5d8ea31da0eb3793ffbfa82d9d839220ddf390b90fe5dbb19f3042ea3

SHA512
3ca452b6cc7c1f77dedd1a293cc142addd1be100c90c2abb83ae7e64816f023ec5e78f6b1cec5470e2dc5204e71e7ca1e61a3d696d9c7fd8f8538f5267e6c2bc

Download Submit
C:\Users\Admin\AppData\Local\9173f3ce-c03c-4985-a3e7-e255b7fd9277\JaffaCakes118_28991f0b0323363b19cea3184f8bfede6de600e61ae3763c05a55db2c6ae352d.exe

Filesize
767KB

MD5
520a9e0aab30e7ba475eeaa7b8e51e1c

SHA1
cd735396941cec394eec00c8849a18fa6e10ade9

SHA256
28991f0b0323363b19cea3184f8bfede6de600e61ae3763c05a55db2c6ae352d

SHA512
6d01df7f6933b071f54dd93b3e83d59cbb6f8325a6a0448ebcef94bddc75d0468eb020dcf4a89eeb6974b2f9a30b5a893ee9711c63e1a2668936833ce21b9d95

Download Submit
C:\Users\Admin\AppData\Local\Temp\CabCB0C.tmp

Filesize
70KB

MD5
49aebf8cbd62d92ac215b2923fb1b9f5

SHA1
1723be06719828dda65ad804298d0431f6aff976

SHA256
b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

SHA512
bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

Download Submit
memory/1724-1-0x00000000004F0000-0x0000000000582000-memory.dmp

Filesize
584KB

Download
memory/1724-2-0x0000000001DC0000-0x0000000001EDB000-memory.dmp

Filesize
1.1MB

Download
memory/1724-0-0x00000000004F0000-0x0000000000582000-memory.dmp

Filesize
584KB

Download
memory/1724-7-0x00000000004F0000-0x0000000000582000-memory.dmp

Filesize
584KB

Download
memory/1876-3-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/1876-27-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1876-9-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1876-8-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1876-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2776-36-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2776-35-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2776-49-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2776-48-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2776-50-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2776-54-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2776-63-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2776-65-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2776-66-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2776-67-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2832-33-0x0000000000400000-0x00000000004EB000-memory.dmp

Filesize
940KB

Download
memory/2832-29-0x0000000000400000-0x00000000004EB000-memory.dmp

Filesize
940KB

Download
memory/2832-28-0x00000000002B0000-0x0000000000342000-memory.dmp

Filesize
584KB

Download