djvu | 6450c7904185c1ca0cbab2b68e01480a88d66f12932dfec1cd38f78732c84b94

Analysis

max time kernel
142s
max time network
131s
platform
windows7_x64
resource
win7-20240708-en
resource tags

arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
submitted
21/12/2024, 23:06

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General

Target

40b580b821bd77cfaf9a5631fd0db4dcda03c20c14b67f89ac830fa44e3b91d8.exe
Size

814KB
MD5

ec49d0d6584ba79f72dbffdad790070c
SHA1

d8d381cd759aa1cf97a4c7c04d2a21896c8d9a98
SHA256

40b580b821bd77cfaf9a5631fd0db4dcda03c20c14b67f89ac830fa44e3b91d8
SHA512

091f8989be60fe709f44316c22a5407da953a86c0baa2d34249fa137bc2d9eb1907b7ec5278d76ee79c4581344a6c74842c8b8363bf81161f0a60d3d26d22dd5
SSDEEP

12288:Dbxu/HPMXlGrLpNfrRfmYugJomnyqNiv+4kNuJktHlELWVUYEvUw4tVcp4b:gHok911mYTo9+VvVlP1vtVP

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

http://acacaca.org/fhsgtsspen6/get.php

Attributes

extension
.vveo
offline_id
rE5LpDv2ftYRXAo7bC18EpzfRMTHSGjgfyIMfZt1
payload_url
http://rgyui.top/dl/build2.exe

http://acacaca.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-QsoSRIeAK6 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: 0533Jhyjd

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 15 IoCs

resource	yara_rule
behavioral1/memory/1900-2-0x0000000001DD0000-0x0000000001EEB000-memory.dmp	family_djvu
behavioral1/memory/2164-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2164-8-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2164-9-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2164-31-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2568-40-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2568-39-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2568-55-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2568-56-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2568-57-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2568-61-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2568-73-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2568-72-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2568-70-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2568-74-0x0000000000400000-0x0000000000537000-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
2576	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-1-5-21-3551809350-4263495960-1443967649-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\c6e5233a-3e56-4590-9e39-8b65f6344dc5\\40b580b821bd77cfaf9a5631fd0db4dcda03c20c14b67f89ac830fa44e3b91d8.exe\" --AutoStart"	40b580b821bd77cfaf9a5631fd0db4dcda03c20c14b67f89ac830fa44e3b91d8.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
9	api.2ip.ua
3	api.2ip.ua
4	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 1900 set thread context of 2164	1900	40b580b821bd77cfaf9a5631fd0db4dcda03c20c14b67f89ac830fa44e3b91d8.exe	30
PID 2716 set thread context of 2568	2716	40b580b821bd77cfaf9a5631fd0db4dcda03c20c14b67f89ac830fa44e3b91d8.exe	33

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	40b580b821bd77cfaf9a5631fd0db4dcda03c20c14b67f89ac830fa44e3b91d8.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	40b580b821bd77cfaf9a5631fd0db4dcda03c20c14b67f89ac830fa44e3b91d8.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	40b580b821bd77cfaf9a5631fd0db4dcda03c20c14b67f89ac830fa44e3b91d8.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	icacls.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	40b580b821bd77cfaf9a5631fd0db4dcda03c20c14b67f89ac830fa44e3b91d8.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2164	40b580b821bd77cfaf9a5631fd0db4dcda03c20c14b67f89ac830fa44e3b91d8.exe
2164	40b580b821bd77cfaf9a5631fd0db4dcda03c20c14b67f89ac830fa44e3b91d8.exe
2568	40b580b821bd77cfaf9a5631fd0db4dcda03c20c14b67f89ac830fa44e3b91d8.exe
2568	40b580b821bd77cfaf9a5631fd0db4dcda03c20c14b67f89ac830fa44e3b91d8.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 1900 wrote to memory of 2164	1900	40b580b821bd77cfaf9a5631fd0db4dcda03c20c14b67f89ac830fa44e3b91d8.exe	30
PID 1900 wrote to memory of 2164	1900	40b580b821bd77cfaf9a5631fd0db4dcda03c20c14b67f89ac830fa44e3b91d8.exe	30
PID 1900 wrote to memory of 2164	1900	40b580b821bd77cfaf9a5631fd0db4dcda03c20c14b67f89ac830fa44e3b91d8.exe	30
PID 1900 wrote to memory of 2164	1900	40b580b821bd77cfaf9a5631fd0db4dcda03c20c14b67f89ac830fa44e3b91d8.exe	30
PID 1900 wrote to memory of 2164	1900	40b580b821bd77cfaf9a5631fd0db4dcda03c20c14b67f89ac830fa44e3b91d8.exe	30
PID 1900 wrote to memory of 2164	1900	40b580b821bd77cfaf9a5631fd0db4dcda03c20c14b67f89ac830fa44e3b91d8.exe	30
PID 1900 wrote to memory of 2164	1900	40b580b821bd77cfaf9a5631fd0db4dcda03c20c14b67f89ac830fa44e3b91d8.exe	30
PID 1900 wrote to memory of 2164	1900	40b580b821bd77cfaf9a5631fd0db4dcda03c20c14b67f89ac830fa44e3b91d8.exe	30
PID 1900 wrote to memory of 2164	1900	40b580b821bd77cfaf9a5631fd0db4dcda03c20c14b67f89ac830fa44e3b91d8.exe	30
PID 1900 wrote to memory of 2164	1900	40b580b821bd77cfaf9a5631fd0db4dcda03c20c14b67f89ac830fa44e3b91d8.exe	30
PID 1900 wrote to memory of 2164	1900	40b580b821bd77cfaf9a5631fd0db4dcda03c20c14b67f89ac830fa44e3b91d8.exe	30
PID 2164 wrote to memory of 2576	2164	40b580b821bd77cfaf9a5631fd0db4dcda03c20c14b67f89ac830fa44e3b91d8.exe	31
PID 2164 wrote to memory of 2576	2164	40b580b821bd77cfaf9a5631fd0db4dcda03c20c14b67f89ac830fa44e3b91d8.exe	31
PID 2164 wrote to memory of 2576	2164	40b580b821bd77cfaf9a5631fd0db4dcda03c20c14b67f89ac830fa44e3b91d8.exe	31
PID 2164 wrote to memory of 2576	2164	40b580b821bd77cfaf9a5631fd0db4dcda03c20c14b67f89ac830fa44e3b91d8.exe	31
PID 2164 wrote to memory of 2716	2164	40b580b821bd77cfaf9a5631fd0db4dcda03c20c14b67f89ac830fa44e3b91d8.exe	32
PID 2164 wrote to memory of 2716	2164	40b580b821bd77cfaf9a5631fd0db4dcda03c20c14b67f89ac830fa44e3b91d8.exe	32
PID 2164 wrote to memory of 2716	2164	40b580b821bd77cfaf9a5631fd0db4dcda03c20c14b67f89ac830fa44e3b91d8.exe	32
PID 2164 wrote to memory of 2716	2164	40b580b821bd77cfaf9a5631fd0db4dcda03c20c14b67f89ac830fa44e3b91d8.exe	32
PID 2716 wrote to memory of 2568	2716	40b580b821bd77cfaf9a5631fd0db4dcda03c20c14b67f89ac830fa44e3b91d8.exe	33
PID 2716 wrote to memory of 2568	2716	40b580b821bd77cfaf9a5631fd0db4dcda03c20c14b67f89ac830fa44e3b91d8.exe	33
PID 2716 wrote to memory of 2568	2716	40b580b821bd77cfaf9a5631fd0db4dcda03c20c14b67f89ac830fa44e3b91d8.exe	33
PID 2716 wrote to memory of 2568	2716	40b580b821bd77cfaf9a5631fd0db4dcda03c20c14b67f89ac830fa44e3b91d8.exe	33
PID 2716 wrote to memory of 2568	2716	40b580b821bd77cfaf9a5631fd0db4dcda03c20c14b67f89ac830fa44e3b91d8.exe	33
PID 2716 wrote to memory of 2568	2716	40b580b821bd77cfaf9a5631fd0db4dcda03c20c14b67f89ac830fa44e3b91d8.exe	33
PID 2716 wrote to memory of 2568	2716	40b580b821bd77cfaf9a5631fd0db4dcda03c20c14b67f89ac830fa44e3b91d8.exe	33
PID 2716 wrote to memory of 2568	2716	40b580b821bd77cfaf9a5631fd0db4dcda03c20c14b67f89ac830fa44e3b91d8.exe	33
PID 2716 wrote to memory of 2568	2716	40b580b821bd77cfaf9a5631fd0db4dcda03c20c14b67f89ac830fa44e3b91d8.exe	33
PID 2716 wrote to memory of 2568	2716	40b580b821bd77cfaf9a5631fd0db4dcda03c20c14b67f89ac830fa44e3b91d8.exe	33
PID 2716 wrote to memory of 2568	2716	40b580b821bd77cfaf9a5631fd0db4dcda03c20c14b67f89ac830fa44e3b91d8.exe	33

C:\Users\Admin\AppData\Local\Temp\40b580b821bd77cfaf9a5631fd0db4dcda03c20c14b67f89ac830fa44e3b91d8.exe
"C:\Users\Admin\AppData\Local\Temp\40b580b821bd77cfaf9a5631fd0db4dcda03c20c14b67f89ac830fa44e3b91d8.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1900
- C:\Users\Admin\AppData\Local\Temp\40b580b821bd77cfaf9a5631fd0db4dcda03c20c14b67f89ac830fa44e3b91d8.exe
  "C:\Users\Admin\AppData\Local\Temp\40b580b821bd77cfaf9a5631fd0db4dcda03c20c14b67f89ac830fa44e3b91d8.exe"
  2⤵
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:2164
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\c6e5233a-3e56-4590-9e39-8b65f6344dc5" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    - System Location Discovery: System Language Discovery
    PID:2576
- - C:\Users\Admin\AppData\Local\Temp\40b580b821bd77cfaf9a5631fd0db4dcda03c20c14b67f89ac830fa44e3b91d8.exe
    "C:\Users\Admin\AppData\Local\Temp\40b580b821bd77cfaf9a5631fd0db4dcda03c20c14b67f89ac830fa44e3b91d8.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2716
  - - C:\Users\Admin\AppData\Local\Temp\40b580b821bd77cfaf9a5631fd0db4dcda03c20c14b67f89ac830fa44e3b91d8.exe
      "C:\Users\Admin\AppData\Local\Temp\40b580b821bd77cfaf9a5631fd0db4dcda03c20c14b67f89ac830fa44e3b91d8.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      PID:2568

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
d9c09a7644550da7bbe93c3b3f86e373

SHA1
4762f9aa53fe36149f836a2281632f843b122387

SHA256
868feb96217158a633e69bdaa7ee957f958f9f368684f20bf6b1830b5fd04cca

SHA512
4de89d9766358323c05312d3bd513b92f97a4bf6d40c33caad6141a5373944733f3b64762be1cf3d511aae15947233d74b9923c116b5fb70d33081a2f77b9e28

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

Filesize
342B

MD5
ba2dc240700d5c97f3a7811713353a6a

SHA1
cc2151c66263426442539534a5c98d2ba51f24eb

SHA256
093cc4fec9c5d877ad82d58927b60c4b815786c0863520ea15d40cd424c939a4

SHA512
23c37d8836c67719bf1c643f1ffc9e1e46d9fb92cfa3153ceefc55db0be06214b5e101c3b5f31443e4478ae8b9f5359253dc7baf9d088118776de843d555fb50

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

Filesize
170B

MD5
fb0ba80df75c53e95f92e844e807f77b

SHA1
a78ba1d94791a8dacae56b53a4e7da577b4faa82

SHA256
869fea8c2024bf6decd167157eb8f0d994c89e665ce9d88e1ac0023b497a5334

SHA512
84bc70df4fcdd720e461579ba666f2001a3873a7272534b73fb713181c9da897638a7bfeb9556875f85f6e2d74200503126789336b0b74598956b732c8101907

Download Submit
C:\Users\Admin\AppData\Local\Temp\Cab6374.tmp

Filesize
70KB

MD5
49aebf8cbd62d92ac215b2923fb1b9f5

SHA1
1723be06719828dda65ad804298d0431f6aff976

SHA256
b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

SHA512
bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

Download Submit
C:\Users\Admin\AppData\Local\c6e5233a-3e56-4590-9e39-8b65f6344dc5\40b580b821bd77cfaf9a5631fd0db4dcda03c20c14b67f89ac830fa44e3b91d8.exe

Filesize
814KB

MD5
ec49d0d6584ba79f72dbffdad790070c

SHA1
d8d381cd759aa1cf97a4c7c04d2a21896c8d9a98

SHA256
40b580b821bd77cfaf9a5631fd0db4dcda03c20c14b67f89ac830fa44e3b91d8

SHA512
091f8989be60fe709f44316c22a5407da953a86c0baa2d34249fa137bc2d9eb1907b7ec5278d76ee79c4581344a6c74842c8b8363bf81161f0a60d3d26d22dd5

Download Submit
memory/1900-6-0x0000000001C60000-0x0000000001CF1000-memory.dmp

Filesize
580KB

Download
memory/1900-2-0x0000000001DD0000-0x0000000001EEB000-memory.dmp

Filesize
1.1MB

Download
memory/1900-0-0x0000000001C60000-0x0000000001CF1000-memory.dmp

Filesize
580KB

Download
memory/1900-1-0x0000000001C60000-0x0000000001CF1000-memory.dmp

Filesize
580KB

Download
memory/2164-9-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2164-8-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2164-31-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2164-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2164-3-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2568-39-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2568-40-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2568-55-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2568-56-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2568-57-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2568-61-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2568-73-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2568-72-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2568-70-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2568-74-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2716-38-0x0000000000400000-0x00000000004D9000-memory.dmp

Filesize
868KB

Download
memory/2716-33-0x0000000000400000-0x00000000004D9000-memory.dmp

Filesize
868KB

Download
memory/2716-32-0x0000000000330000-0x00000000003C1000-memory.dmp

Filesize
580KB

Download