djvu | f4b168df46a98222fa6947ec58734d624a2c90818c5eff3877ceb2e475d2adca

Analysis

max time kernel
294s
max time network
154s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
15/04/2024, 05:04

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General

Target

f4b168df46a98222fa6947ec58734d624a2c90818c5eff3877ceb2e475d2adca.exe
Size

792KB
MD5

4e5854fc7e8d37a95f3a520c817bdab0
SHA1

29028c91f5846f0fd8f9a6d6273cc23b02026319
SHA256

f4b168df46a98222fa6947ec58734d624a2c90818c5eff3877ceb2e475d2adca
SHA512

5dd07d623b89a025e139bc40a6701ea0f97e6ea71fc7f1df9e824b5f3231fc5eb1f07087597dc4c85a3539e0ade9043aefc138973007f6ad3b74833ff287414e
SSDEEP

24576:Qj9oyGEw0Kje+1tqX+F6u2QE4z5qESTxC4:Q98jD6X+v2qqEOC

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

http://sajdfue.com/test2/get.php

Attributes

extension
.uazq
offline_id
Jx0i3k2ogR5cKxX1evmz0Ex7TUxOUlnbh2dvnIt1
payload_url
http://sdfjhuz.com/dl/build2.exe

http://sajdfue.com/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. Do not ask assistants from youtube and recovery data sites for help in recovering your data. They can use your free decryption quota and scam you. Our contact is emails in this text document only. You can get and look video overview decrypt tool: https://wetransfer.com/downloads/df01994dd8d37c2c33469922f8e7155a20240402134014/fd95b0 Price of private key and decrypt software is $999. Discount 50% available if you contact us first 72 hours, that's price for you is $499. 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: 0860PsawqS

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 14 IoCs

resource	yara_rule
behavioral1/memory/1712-3-0x00000000046F0000-0x000000000480B000-memory.dmp	family_djvu
behavioral1/memory/1928-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1928-8-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1928-9-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1928-27-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2104-36-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2104-37-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2104-50-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2104-51-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2104-52-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2104-55-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2104-57-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2104-58-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2104-59-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu

Djvu Ransomware
Ransomware which is a variant of the STOP family.
ransomware djvu

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
2408	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-1-5-21-3452737119-3959686427-228443150-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\fc455f3d-3e04-43c0-bb00-88eb2bc7d961\\f4b168df46a98222fa6947ec58734d624a2c90818c5eff3877ceb2e475d2adca.exe\" --AutoStart"	f4b168df46a98222fa6947ec58734d624a2c90818c5eff3877ceb2e475d2adca.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 1712 set thread context of 1928	1712	f4b168df46a98222fa6947ec58734d624a2c90818c5eff3877ceb2e475d2adca.exe	28
PID 2736 set thread context of 2104	2736	f4b168df46a98222fa6947ec58734d624a2c90818c5eff3877ceb2e475d2adca.exe	32

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
1928	f4b168df46a98222fa6947ec58734d624a2c90818c5eff3877ceb2e475d2adca.exe
1928	f4b168df46a98222fa6947ec58734d624a2c90818c5eff3877ceb2e475d2adca.exe
2104	f4b168df46a98222fa6947ec58734d624a2c90818c5eff3877ceb2e475d2adca.exe
2104	f4b168df46a98222fa6947ec58734d624a2c90818c5eff3877ceb2e475d2adca.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 1712 wrote to memory of 1928	1712	f4b168df46a98222fa6947ec58734d624a2c90818c5eff3877ceb2e475d2adca.exe	28
PID 1712 wrote to memory of 1928	1712	f4b168df46a98222fa6947ec58734d624a2c90818c5eff3877ceb2e475d2adca.exe	28
PID 1712 wrote to memory of 1928	1712	f4b168df46a98222fa6947ec58734d624a2c90818c5eff3877ceb2e475d2adca.exe	28
PID 1712 wrote to memory of 1928	1712	f4b168df46a98222fa6947ec58734d624a2c90818c5eff3877ceb2e475d2adca.exe	28
PID 1712 wrote to memory of 1928	1712	f4b168df46a98222fa6947ec58734d624a2c90818c5eff3877ceb2e475d2adca.exe	28
PID 1712 wrote to memory of 1928	1712	f4b168df46a98222fa6947ec58734d624a2c90818c5eff3877ceb2e475d2adca.exe	28
PID 1712 wrote to memory of 1928	1712	f4b168df46a98222fa6947ec58734d624a2c90818c5eff3877ceb2e475d2adca.exe	28
PID 1712 wrote to memory of 1928	1712	f4b168df46a98222fa6947ec58734d624a2c90818c5eff3877ceb2e475d2adca.exe	28
PID 1712 wrote to memory of 1928	1712	f4b168df46a98222fa6947ec58734d624a2c90818c5eff3877ceb2e475d2adca.exe	28
PID 1712 wrote to memory of 1928	1712	f4b168df46a98222fa6947ec58734d624a2c90818c5eff3877ceb2e475d2adca.exe	28
PID 1712 wrote to memory of 1928	1712	f4b168df46a98222fa6947ec58734d624a2c90818c5eff3877ceb2e475d2adca.exe	28
PID 1928 wrote to memory of 2408	1928	f4b168df46a98222fa6947ec58734d624a2c90818c5eff3877ceb2e475d2adca.exe	30
PID 1928 wrote to memory of 2408	1928	f4b168df46a98222fa6947ec58734d624a2c90818c5eff3877ceb2e475d2adca.exe	30
PID 1928 wrote to memory of 2408	1928	f4b168df46a98222fa6947ec58734d624a2c90818c5eff3877ceb2e475d2adca.exe	30
PID 1928 wrote to memory of 2408	1928	f4b168df46a98222fa6947ec58734d624a2c90818c5eff3877ceb2e475d2adca.exe	30
PID 1928 wrote to memory of 2736	1928	f4b168df46a98222fa6947ec58734d624a2c90818c5eff3877ceb2e475d2adca.exe	31
PID 1928 wrote to memory of 2736	1928	f4b168df46a98222fa6947ec58734d624a2c90818c5eff3877ceb2e475d2adca.exe	31
PID 1928 wrote to memory of 2736	1928	f4b168df46a98222fa6947ec58734d624a2c90818c5eff3877ceb2e475d2adca.exe	31
PID 1928 wrote to memory of 2736	1928	f4b168df46a98222fa6947ec58734d624a2c90818c5eff3877ceb2e475d2adca.exe	31
PID 2736 wrote to memory of 2104	2736	f4b168df46a98222fa6947ec58734d624a2c90818c5eff3877ceb2e475d2adca.exe	32
PID 2736 wrote to memory of 2104	2736	f4b168df46a98222fa6947ec58734d624a2c90818c5eff3877ceb2e475d2adca.exe	32
PID 2736 wrote to memory of 2104	2736	f4b168df46a98222fa6947ec58734d624a2c90818c5eff3877ceb2e475d2adca.exe	32
PID 2736 wrote to memory of 2104	2736	f4b168df46a98222fa6947ec58734d624a2c90818c5eff3877ceb2e475d2adca.exe	32
PID 2736 wrote to memory of 2104	2736	f4b168df46a98222fa6947ec58734d624a2c90818c5eff3877ceb2e475d2adca.exe	32
PID 2736 wrote to memory of 2104	2736	f4b168df46a98222fa6947ec58734d624a2c90818c5eff3877ceb2e475d2adca.exe	32
PID 2736 wrote to memory of 2104	2736	f4b168df46a98222fa6947ec58734d624a2c90818c5eff3877ceb2e475d2adca.exe	32
PID 2736 wrote to memory of 2104	2736	f4b168df46a98222fa6947ec58734d624a2c90818c5eff3877ceb2e475d2adca.exe	32
PID 2736 wrote to memory of 2104	2736	f4b168df46a98222fa6947ec58734d624a2c90818c5eff3877ceb2e475d2adca.exe	32
PID 2736 wrote to memory of 2104	2736	f4b168df46a98222fa6947ec58734d624a2c90818c5eff3877ceb2e475d2adca.exe	32
PID 2736 wrote to memory of 2104	2736	f4b168df46a98222fa6947ec58734d624a2c90818c5eff3877ceb2e475d2adca.exe	32

C:\Users\Admin\AppData\Local\Temp\f4b168df46a98222fa6947ec58734d624a2c90818c5eff3877ceb2e475d2adca.exe
"C:\Users\Admin\AppData\Local\Temp\f4b168df46a98222fa6947ec58734d624a2c90818c5eff3877ceb2e475d2adca.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1712
- C:\Users\Admin\AppData\Local\Temp\f4b168df46a98222fa6947ec58734d624a2c90818c5eff3877ceb2e475d2adca.exe
  "C:\Users\Admin\AppData\Local\Temp\f4b168df46a98222fa6947ec58734d624a2c90818c5eff3877ceb2e475d2adca.exe"
  2⤵
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:1928
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\fc455f3d-3e04-43c0-bb00-88eb2bc7d961" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    PID:2408
- - C:\Users\Admin\AppData\Local\Temp\f4b168df46a98222fa6947ec58734d624a2c90818c5eff3877ceb2e475d2adca.exe
    "C:\Users\Admin\AppData\Local\Temp\f4b168df46a98222fa6947ec58734d624a2c90818c5eff3877ceb2e475d2adca.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:2736
  - - C:\Users\Admin\AppData\Local\Temp\f4b168df46a98222fa6947ec58734d624a2c90818c5eff3877ceb2e475d2adca.exe
      "C:\Users\Admin\AppData\Local\Temp\f4b168df46a98222fa6947ec58734d624a2c90818c5eff3877ceb2e475d2adca.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      Suspicious behavior: EnumeratesProcesses
      PID:2104

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

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA

Filesize
1KB

MD5
d1dd7a00ce73518932c811f701be1f45

SHA1
6ed624589a811394e17535336ff8fea311ce10cf

SHA256
8e9e392dc9b61b203b94259919869e3384fe634a6c76da3b817ecb1e5566c669

SHA512
885e1bdea6ac9f0823c13a7c5e0a5fca1e3b51d1fbdb049ca74e900ebb73ed536554db013055eb9404bc769b1b26bc14c4e96080c2fe588b234d3aab86547ea7

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464

Filesize
724B

MD5
8202a1cd02e7d69597995cabbe881a12

SHA1
8858d9d934b7aa9330ee73de6c476acf19929ff6

SHA256
58f381c3a0a0ace6321da22e40bd44a597bd98b9c9390ab9258426b5cf75a7a5

SHA512
97ba9fceab995d4bef706f8deef99e06862999734ebe6a05832c710104479c6337cbf0a76e1c1e0f91566a61334dc100d837dfd049e20da765fe49def684f9c9

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA

Filesize
410B

MD5
6f991343a936cf5a26603af16212a9d3

SHA1
abd290ae5f95bdbc81715381aacd97e3fec3f098

SHA256
6990776f0914ea493aa5a5ed89ac61817031b6d9075e17af8975c16a88493634

SHA512
cc52e85c486aa7ceebb13cd68567e0a4ef7e2dde2f4bba6e20101f417e602a68c51b837f877c68eb233f5df950692de9aaddd7ec3bdcd72ad16ade345562fd13

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

Filesize
344B

MD5
da1e24369340185d879c3e9af4c451e5

SHA1
48240ca0c17d7a2fbb80819dd18161370c61696b

SHA256
0d4eb04db1448c25ebcb9b5aa9ba557fa679c652ec0e46ef714f2e7ac2c55db1

SHA512
ed50a27c858eb5bd6a60d39c71de79152fdc8f888563dcfc47870f9b59ea421166950f93cf2e11097a8586776e3f1dfc9e3fbf75fbc2e03e7cce8788c23ef501

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464

Filesize
392B

MD5
ef3d5bfa225f981ac85b2d8385ff9db8

SHA1
e7951355f6c8bdd25bb09074a8b8ee759a6eb9e8

SHA256
1ce48b623e994a7622ff0ef2b424b44e02eef649ede7627b3f419bcb327b4619

SHA512
c25a09093222058770f8fac67bdbd508358ec5cf377d3f4d3a1b6e4737595102a969dd1c7f51e0c5f97b57c86d3a3f90b58f74076f5f5d5b649a5f3c9d1dcbfd

Download Submit
C:\Users\Admin\AppData\Local\Temp\Cab1EA8.tmp

Filesize
65KB

MD5
ac05d27423a85adc1622c714f2cb6184

SHA1
b0fe2b1abddb97837ea0195be70ab2ff14d43198

SHA256
c6456e12e5e53287a547af4103e0397cb9697e466cf75844312dc296d43d144d

SHA512
6d0ef9050e41fbae680e0e59dd0f90b6ac7fea5579ef5708b69d5da33a0ece7e8b16574b58b17b64a34cc34a4ffc22b4a62c1ece61f36c4a11a0665e0536b90d

Download Submit
C:\Users\Admin\AppData\Local\fc455f3d-3e04-43c0-bb00-88eb2bc7d961\f4b168df46a98222fa6947ec58734d624a2c90818c5eff3877ceb2e475d2adca.exe

Filesize
792KB

MD5
4e5854fc7e8d37a95f3a520c817bdab0

SHA1
29028c91f5846f0fd8f9a6d6273cc23b02026319

SHA256
f4b168df46a98222fa6947ec58734d624a2c90818c5eff3877ceb2e475d2adca

SHA512
5dd07d623b89a025e139bc40a6701ea0f97e6ea71fc7f1df9e824b5f3231fc5eb1f07087597dc4c85a3539e0ade9043aefc138973007f6ad3b74833ff287414e

Download Submit
memory/1712-7-0x00000000002C0000-0x0000000000351000-memory.dmp

Filesize
580KB

Download
memory/1712-3-0x00000000046F0000-0x000000000480B000-memory.dmp

Filesize
1.1MB

Download
memory/1712-0-0x00000000002C0000-0x0000000000351000-memory.dmp

Filesize
580KB

Download
memory/1712-1-0x00000000002C0000-0x0000000000351000-memory.dmp

Filesize
580KB

Download
memory/1928-9-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1928-8-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1928-27-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1928-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1928-2-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2104-37-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2104-36-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2104-50-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2104-51-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2104-52-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2104-55-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2104-57-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2104-58-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2104-59-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2736-35-0x00000000002A0000-0x0000000000331000-memory.dmp

Filesize
580KB

Download
memory/2736-30-0x00000000002A0000-0x0000000000331000-memory.dmp

Filesize
580KB

Download
memory/2736-29-0x00000000002A0000-0x0000000000331000-memory.dmp

Filesize
580KB

Download