djvu | 851fc4f6765ad4015d96a5952098b255c720ec8d88a974d6dfc498bec91910f3

Analysis

max time kernel
145s
max time network
134s
platform
windows7_x64
resource
win7-20241023-en
resource tags

arch:x64arch:x86image:win7-20241023-enlocale:en-usos:windows7-x64system
submitted
22/12/2024, 18:46

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General

Target

55e76df782e2a76e93ae1cc632942a169794a544b9c472e1043ea5a5eb70bd68.exe
Size

814KB
MD5

960c9dad66df9d52c73f149540b6f7b3
SHA1

11920d07db2635587e2bb198d7c209d2e1be65ad
SHA256

55e76df782e2a76e93ae1cc632942a169794a544b9c472e1043ea5a5eb70bd68
SHA512

f1a64cf32418b1c932a0dc93521895eed60a87abdebba5f0c3bac4e3345655285038077e15f44014b6e840a07e5d9d1e944ed422148b62bc5059cf70537d0a14
SSDEEP

24576:2sX+/5uah35/BV2fHEPPtgjS0f6cCWdcPub:2JwHgCjS0FCY

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/2656-2-0x0000000001E50000-0x0000000001F6B000-memory.dmp	family_djvu
behavioral1/memory/1668-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1668-8-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1668-9-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1668-27-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2820-35-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2820-36-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2820-48-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2820-49-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2820-50-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2820-54-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2820-63-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2820-65-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2820-66-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2820-67-0x0000000000400000-0x0000000000537000-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
2932	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\\47abd743-ff6f-4db9-a45b-428c13b56cb2\\55e76df782e2a76e93ae1cc632942a169794a544b9c472e1043ea5a5eb70bd68.exe\" --AutoStart"	55e76df782e2a76e93ae1cc632942a169794a544b9c472e1043ea5a5eb70bd68.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 2656 set thread context of 1668	2656	55e76df782e2a76e93ae1cc632942a169794a544b9c472e1043ea5a5eb70bd68.exe	30
PID 2904 set thread context of 2820	2904	55e76df782e2a76e93ae1cc632942a169794a544b9c472e1043ea5a5eb70bd68.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	55e76df782e2a76e93ae1cc632942a169794a544b9c472e1043ea5a5eb70bd68.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	55e76df782e2a76e93ae1cc632942a169794a544b9c472e1043ea5a5eb70bd68.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	55e76df782e2a76e93ae1cc632942a169794a544b9c472e1043ea5a5eb70bd68.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	55e76df782e2a76e93ae1cc632942a169794a544b9c472e1043ea5a5eb70bd68.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	icacls.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
1668	55e76df782e2a76e93ae1cc632942a169794a544b9c472e1043ea5a5eb70bd68.exe
1668	55e76df782e2a76e93ae1cc632942a169794a544b9c472e1043ea5a5eb70bd68.exe
2820	55e76df782e2a76e93ae1cc632942a169794a544b9c472e1043ea5a5eb70bd68.exe
2820	55e76df782e2a76e93ae1cc632942a169794a544b9c472e1043ea5a5eb70bd68.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2656 wrote to memory of 1668	2656	55e76df782e2a76e93ae1cc632942a169794a544b9c472e1043ea5a5eb70bd68.exe	30
PID 2656 wrote to memory of 1668	2656	55e76df782e2a76e93ae1cc632942a169794a544b9c472e1043ea5a5eb70bd68.exe	30
PID 2656 wrote to memory of 1668	2656	55e76df782e2a76e93ae1cc632942a169794a544b9c472e1043ea5a5eb70bd68.exe	30
PID 2656 wrote to memory of 1668	2656	55e76df782e2a76e93ae1cc632942a169794a544b9c472e1043ea5a5eb70bd68.exe	30
PID 2656 wrote to memory of 1668	2656	55e76df782e2a76e93ae1cc632942a169794a544b9c472e1043ea5a5eb70bd68.exe	30
PID 2656 wrote to memory of 1668	2656	55e76df782e2a76e93ae1cc632942a169794a544b9c472e1043ea5a5eb70bd68.exe	30
PID 2656 wrote to memory of 1668	2656	55e76df782e2a76e93ae1cc632942a169794a544b9c472e1043ea5a5eb70bd68.exe	30
PID 2656 wrote to memory of 1668	2656	55e76df782e2a76e93ae1cc632942a169794a544b9c472e1043ea5a5eb70bd68.exe	30
PID 2656 wrote to memory of 1668	2656	55e76df782e2a76e93ae1cc632942a169794a544b9c472e1043ea5a5eb70bd68.exe	30
PID 2656 wrote to memory of 1668	2656	55e76df782e2a76e93ae1cc632942a169794a544b9c472e1043ea5a5eb70bd68.exe	30
PID 2656 wrote to memory of 1668	2656	55e76df782e2a76e93ae1cc632942a169794a544b9c472e1043ea5a5eb70bd68.exe	30
PID 1668 wrote to memory of 2932	1668	55e76df782e2a76e93ae1cc632942a169794a544b9c472e1043ea5a5eb70bd68.exe	32
PID 1668 wrote to memory of 2932	1668	55e76df782e2a76e93ae1cc632942a169794a544b9c472e1043ea5a5eb70bd68.exe	32
PID 1668 wrote to memory of 2932	1668	55e76df782e2a76e93ae1cc632942a169794a544b9c472e1043ea5a5eb70bd68.exe	32
PID 1668 wrote to memory of 2932	1668	55e76df782e2a76e93ae1cc632942a169794a544b9c472e1043ea5a5eb70bd68.exe	32
PID 1668 wrote to memory of 2904	1668	55e76df782e2a76e93ae1cc632942a169794a544b9c472e1043ea5a5eb70bd68.exe	33
PID 1668 wrote to memory of 2904	1668	55e76df782e2a76e93ae1cc632942a169794a544b9c472e1043ea5a5eb70bd68.exe	33
PID 1668 wrote to memory of 2904	1668	55e76df782e2a76e93ae1cc632942a169794a544b9c472e1043ea5a5eb70bd68.exe	33
PID 1668 wrote to memory of 2904	1668	55e76df782e2a76e93ae1cc632942a169794a544b9c472e1043ea5a5eb70bd68.exe	33
PID 2904 wrote to memory of 2820	2904	55e76df782e2a76e93ae1cc632942a169794a544b9c472e1043ea5a5eb70bd68.exe	34
PID 2904 wrote to memory of 2820	2904	55e76df782e2a76e93ae1cc632942a169794a544b9c472e1043ea5a5eb70bd68.exe	34
PID 2904 wrote to memory of 2820	2904	55e76df782e2a76e93ae1cc632942a169794a544b9c472e1043ea5a5eb70bd68.exe	34
PID 2904 wrote to memory of 2820	2904	55e76df782e2a76e93ae1cc632942a169794a544b9c472e1043ea5a5eb70bd68.exe	34
PID 2904 wrote to memory of 2820	2904	55e76df782e2a76e93ae1cc632942a169794a544b9c472e1043ea5a5eb70bd68.exe	34
PID 2904 wrote to memory of 2820	2904	55e76df782e2a76e93ae1cc632942a169794a544b9c472e1043ea5a5eb70bd68.exe	34
PID 2904 wrote to memory of 2820	2904	55e76df782e2a76e93ae1cc632942a169794a544b9c472e1043ea5a5eb70bd68.exe	34
PID 2904 wrote to memory of 2820	2904	55e76df782e2a76e93ae1cc632942a169794a544b9c472e1043ea5a5eb70bd68.exe	34
PID 2904 wrote to memory of 2820	2904	55e76df782e2a76e93ae1cc632942a169794a544b9c472e1043ea5a5eb70bd68.exe	34
PID 2904 wrote to memory of 2820	2904	55e76df782e2a76e93ae1cc632942a169794a544b9c472e1043ea5a5eb70bd68.exe	34
PID 2904 wrote to memory of 2820	2904	55e76df782e2a76e93ae1cc632942a169794a544b9c472e1043ea5a5eb70bd68.exe	34

C:\Users\Admin\AppData\Local\Temp\55e76df782e2a76e93ae1cc632942a169794a544b9c472e1043ea5a5eb70bd68.exe
"C:\Users\Admin\AppData\Local\Temp\55e76df782e2a76e93ae1cc632942a169794a544b9c472e1043ea5a5eb70bd68.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2656
- C:\Users\Admin\AppData\Local\Temp\55e76df782e2a76e93ae1cc632942a169794a544b9c472e1043ea5a5eb70bd68.exe
  "C:\Users\Admin\AppData\Local\Temp\55e76df782e2a76e93ae1cc632942a169794a544b9c472e1043ea5a5eb70bd68.exe"
  2⤵
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:1668
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\47abd743-ff6f-4db9-a45b-428c13b56cb2" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    - System Location Discovery: System Language Discovery
    PID:2932
- - C:\Users\Admin\AppData\Local\Temp\55e76df782e2a76e93ae1cc632942a169794a544b9c472e1043ea5a5eb70bd68.exe
    "C:\Users\Admin\AppData\Local\Temp\55e76df782e2a76e93ae1cc632942a169794a544b9c472e1043ea5a5eb70bd68.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2904
  - - C:\Users\Admin\AppData\Local\Temp\55e76df782e2a76e93ae1cc632942a169794a544b9c472e1043ea5a5eb70bd68.exe
      "C:\Users\Admin\AppData\Local\Temp\55e76df782e2a76e93ae1cc632942a169794a544b9c472e1043ea5a5eb70bd68.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      PID:2820

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
efbc397b52d6ec2b20998c4544de93b3

SHA1
c29740a18ec5430269a055fa313f3a468775baa2

SHA256
d7a24b3bdfac6776671c52e2f924a668e4e814fcb202186379f23525b339f057

SHA512
8c508d6f8f26d369c5fb4f7cc7ac78e5246cb2dcd2753c094713eba1a7f63f688e5b1a7e25defa9ebf560b85b46b83e62e616877b209566b9a058a26515cbdb2

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

Filesize
170B

MD5
103ad1227651538b2340a0685635d579

SHA1
b8c30d937ba03044df1b0386735bbdff8183e64f

SHA256
be7fc119d6e17ea2c34b2c7d63710c8986ba2594c2ccbc83e53ebfefa3e7ceff

SHA512
1294752270ad1d31da80e45ef1d1ef300cd841106180071c4c19fc266849c6b43decbae37ddc1e0ab4e53cc0f973e4aa1bf7db0daa35439a1f071813f9a7a10d

Download Submit
C:\Users\Admin\AppData\Local\47abd743-ff6f-4db9-a45b-428c13b56cb2\55e76df782e2a76e93ae1cc632942a169794a544b9c472e1043ea5a5eb70bd68.exe

Filesize
814KB

MD5
960c9dad66df9d52c73f149540b6f7b3

SHA1
11920d07db2635587e2bb198d7c209d2e1be65ad

SHA256
55e76df782e2a76e93ae1cc632942a169794a544b9c472e1043ea5a5eb70bd68

SHA512
f1a64cf32418b1c932a0dc93521895eed60a87abdebba5f0c3bac4e3345655285038077e15f44014b6e840a07e5d9d1e944ed422148b62bc5059cf70537d0a14

Download Submit
C:\Users\Admin\AppData\Local\Temp\CabBCF9.tmp

Filesize
70KB

MD5
49aebf8cbd62d92ac215b2923fb1b9f5

SHA1
1723be06719828dda65ad804298d0431f6aff976

SHA256
b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

SHA512
bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

Download Submit
memory/1668-27-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1668-9-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1668-8-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1668-3-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/1668-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2656-7-0x0000000000250000-0x00000000002E1000-memory.dmp

Filesize
580KB

Download
memory/2656-2-0x0000000001E50000-0x0000000001F6B000-memory.dmp

Filesize
1.1MB

Download
memory/2656-1-0x0000000000250000-0x00000000002E1000-memory.dmp

Filesize
580KB

Download
memory/2656-0-0x0000000000250000-0x00000000002E1000-memory.dmp

Filesize
580KB

Download
memory/2820-36-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2820-35-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2820-48-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2820-49-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2820-50-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2820-54-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2820-63-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2820-65-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2820-66-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2820-67-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2904-33-0x0000000000400000-0x00000000004D9000-memory.dmp

Filesize
868KB

Download
memory/2904-29-0x0000000000400000-0x00000000004D9000-memory.dmp

Filesize
868KB

Download
memory/2904-28-0x0000000000220000-0x00000000002B1000-memory.dmp

Filesize
580KB

Download