djvu | 43684bb4a9de7f90f1faab9fd2183891eb8a3a4ee635fd9a72995abae47b90fa

Analysis

max time kernel
145s
max time network
134s
platform
windows7_x64
resource
win7-20240708-en
resource tags

arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
submitted
29/12/2024, 08:57

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General

Target

299a64d47dbc636d81fc76f4c6837c5c0faf4e0a8aa8460dfb8877c2d7fa41d0.exe
Size

814KB
MD5

8db858c113bf9da58fa9a7524c7023e9
SHA1

d2a8dad63d4c66d3ac446c64f7c682584ab8b069
SHA256

299a64d47dbc636d81fc76f4c6837c5c0faf4e0a8aa8460dfb8877c2d7fa41d0
SHA512

6336cd7afa29d5b8e36fb2279af3aa3e2da9f657a1769bf7dc6b6d60cff2e785f092fba3434af39abffe45cb9215bf7b852ced79d612f53c1b819f037042606f
SSDEEP

24576:QEDLISgyeNv0em9UBCV44ecLfN2LiktuUcrwwN:QQeaeE44BULikBi3

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

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

Attributes

extension
.vvew
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: 0530Jhyjd

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 15 IoCs

resource	yara_rule
behavioral1/memory/784-2-0x00000000004E0000-0x00000000005FB000-memory.dmp	family_djvu
behavioral1/memory/2096-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2096-8-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2096-9-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2096-27-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2888-34-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2888-36-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2888-48-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2888-49-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2888-50-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2888-54-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2888-63-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2888-66-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2888-65-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2888-67-0x0000000000400000-0x0000000000537000-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
2700	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\\4ad6388c-ea18-43de-8a5e-d85d4abda12a\\299a64d47dbc636d81fc76f4c6837c5c0faf4e0a8aa8460dfb8877c2d7fa41d0.exe\" --AutoStart"	299a64d47dbc636d81fc76f4c6837c5c0faf4e0a8aa8460dfb8877c2d7fa41d0.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 784 set thread context of 2096	784	299a64d47dbc636d81fc76f4c6837c5c0faf4e0a8aa8460dfb8877c2d7fa41d0.exe	31
PID 2748 set thread context of 2888	2748	299a64d47dbc636d81fc76f4c6837c5c0faf4e0a8aa8460dfb8877c2d7fa41d0.exe	35

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	299a64d47dbc636d81fc76f4c6837c5c0faf4e0a8aa8460dfb8877c2d7fa41d0.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	299a64d47dbc636d81fc76f4c6837c5c0faf4e0a8aa8460dfb8877c2d7fa41d0.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	icacls.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	299a64d47dbc636d81fc76f4c6837c5c0faf4e0a8aa8460dfb8877c2d7fa41d0.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	299a64d47dbc636d81fc76f4c6837c5c0faf4e0a8aa8460dfb8877c2d7fa41d0.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2096	299a64d47dbc636d81fc76f4c6837c5c0faf4e0a8aa8460dfb8877c2d7fa41d0.exe
2096	299a64d47dbc636d81fc76f4c6837c5c0faf4e0a8aa8460dfb8877c2d7fa41d0.exe
2888	299a64d47dbc636d81fc76f4c6837c5c0faf4e0a8aa8460dfb8877c2d7fa41d0.exe
2888	299a64d47dbc636d81fc76f4c6837c5c0faf4e0a8aa8460dfb8877c2d7fa41d0.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 784 wrote to memory of 2096	784	299a64d47dbc636d81fc76f4c6837c5c0faf4e0a8aa8460dfb8877c2d7fa41d0.exe	31
PID 784 wrote to memory of 2096	784	299a64d47dbc636d81fc76f4c6837c5c0faf4e0a8aa8460dfb8877c2d7fa41d0.exe	31
PID 784 wrote to memory of 2096	784	299a64d47dbc636d81fc76f4c6837c5c0faf4e0a8aa8460dfb8877c2d7fa41d0.exe	31
PID 784 wrote to memory of 2096	784	299a64d47dbc636d81fc76f4c6837c5c0faf4e0a8aa8460dfb8877c2d7fa41d0.exe	31
PID 784 wrote to memory of 2096	784	299a64d47dbc636d81fc76f4c6837c5c0faf4e0a8aa8460dfb8877c2d7fa41d0.exe	31
PID 784 wrote to memory of 2096	784	299a64d47dbc636d81fc76f4c6837c5c0faf4e0a8aa8460dfb8877c2d7fa41d0.exe	31
PID 784 wrote to memory of 2096	784	299a64d47dbc636d81fc76f4c6837c5c0faf4e0a8aa8460dfb8877c2d7fa41d0.exe	31
PID 784 wrote to memory of 2096	784	299a64d47dbc636d81fc76f4c6837c5c0faf4e0a8aa8460dfb8877c2d7fa41d0.exe	31
PID 784 wrote to memory of 2096	784	299a64d47dbc636d81fc76f4c6837c5c0faf4e0a8aa8460dfb8877c2d7fa41d0.exe	31
PID 784 wrote to memory of 2096	784	299a64d47dbc636d81fc76f4c6837c5c0faf4e0a8aa8460dfb8877c2d7fa41d0.exe	31
PID 784 wrote to memory of 2096	784	299a64d47dbc636d81fc76f4c6837c5c0faf4e0a8aa8460dfb8877c2d7fa41d0.exe	31
PID 2096 wrote to memory of 2700	2096	299a64d47dbc636d81fc76f4c6837c5c0faf4e0a8aa8460dfb8877c2d7fa41d0.exe	33
PID 2096 wrote to memory of 2700	2096	299a64d47dbc636d81fc76f4c6837c5c0faf4e0a8aa8460dfb8877c2d7fa41d0.exe	33
PID 2096 wrote to memory of 2700	2096	299a64d47dbc636d81fc76f4c6837c5c0faf4e0a8aa8460dfb8877c2d7fa41d0.exe	33
PID 2096 wrote to memory of 2700	2096	299a64d47dbc636d81fc76f4c6837c5c0faf4e0a8aa8460dfb8877c2d7fa41d0.exe	33
PID 2096 wrote to memory of 2748	2096	299a64d47dbc636d81fc76f4c6837c5c0faf4e0a8aa8460dfb8877c2d7fa41d0.exe	34
PID 2096 wrote to memory of 2748	2096	299a64d47dbc636d81fc76f4c6837c5c0faf4e0a8aa8460dfb8877c2d7fa41d0.exe	34
PID 2096 wrote to memory of 2748	2096	299a64d47dbc636d81fc76f4c6837c5c0faf4e0a8aa8460dfb8877c2d7fa41d0.exe	34
PID 2096 wrote to memory of 2748	2096	299a64d47dbc636d81fc76f4c6837c5c0faf4e0a8aa8460dfb8877c2d7fa41d0.exe	34
PID 2748 wrote to memory of 2888	2748	299a64d47dbc636d81fc76f4c6837c5c0faf4e0a8aa8460dfb8877c2d7fa41d0.exe	35
PID 2748 wrote to memory of 2888	2748	299a64d47dbc636d81fc76f4c6837c5c0faf4e0a8aa8460dfb8877c2d7fa41d0.exe	35
PID 2748 wrote to memory of 2888	2748	299a64d47dbc636d81fc76f4c6837c5c0faf4e0a8aa8460dfb8877c2d7fa41d0.exe	35
PID 2748 wrote to memory of 2888	2748	299a64d47dbc636d81fc76f4c6837c5c0faf4e0a8aa8460dfb8877c2d7fa41d0.exe	35
PID 2748 wrote to memory of 2888	2748	299a64d47dbc636d81fc76f4c6837c5c0faf4e0a8aa8460dfb8877c2d7fa41d0.exe	35
PID 2748 wrote to memory of 2888	2748	299a64d47dbc636d81fc76f4c6837c5c0faf4e0a8aa8460dfb8877c2d7fa41d0.exe	35
PID 2748 wrote to memory of 2888	2748	299a64d47dbc636d81fc76f4c6837c5c0faf4e0a8aa8460dfb8877c2d7fa41d0.exe	35
PID 2748 wrote to memory of 2888	2748	299a64d47dbc636d81fc76f4c6837c5c0faf4e0a8aa8460dfb8877c2d7fa41d0.exe	35
PID 2748 wrote to memory of 2888	2748	299a64d47dbc636d81fc76f4c6837c5c0faf4e0a8aa8460dfb8877c2d7fa41d0.exe	35
PID 2748 wrote to memory of 2888	2748	299a64d47dbc636d81fc76f4c6837c5c0faf4e0a8aa8460dfb8877c2d7fa41d0.exe	35
PID 2748 wrote to memory of 2888	2748	299a64d47dbc636d81fc76f4c6837c5c0faf4e0a8aa8460dfb8877c2d7fa41d0.exe	35

C:\Users\Admin\AppData\Local\Temp\299a64d47dbc636d81fc76f4c6837c5c0faf4e0a8aa8460dfb8877c2d7fa41d0.exe
"C:\Users\Admin\AppData\Local\Temp\299a64d47dbc636d81fc76f4c6837c5c0faf4e0a8aa8460dfb8877c2d7fa41d0.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:784
- C:\Users\Admin\AppData\Local\Temp\299a64d47dbc636d81fc76f4c6837c5c0faf4e0a8aa8460dfb8877c2d7fa41d0.exe
  "C:\Users\Admin\AppData\Local\Temp\299a64d47dbc636d81fc76f4c6837c5c0faf4e0a8aa8460dfb8877c2d7fa41d0.exe"
  2⤵
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:2096
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\4ad6388c-ea18-43de-8a5e-d85d4abda12a" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    - System Location Discovery: System Language Discovery
    PID:2700
- - C:\Users\Admin\AppData\Local\Temp\299a64d47dbc636d81fc76f4c6837c5c0faf4e0a8aa8460dfb8877c2d7fa41d0.exe
    "C:\Users\Admin\AppData\Local\Temp\299a64d47dbc636d81fc76f4c6837c5c0faf4e0a8aa8460dfb8877c2d7fa41d0.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2748
  - - C:\Users\Admin\AppData\Local\Temp\299a64d47dbc636d81fc76f4c6837c5c0faf4e0a8aa8460dfb8877c2d7fa41d0.exe
      "C:\Users\Admin\AppData\Local\Temp\299a64d47dbc636d81fc76f4c6837c5c0faf4e0a8aa8460dfb8877c2d7fa41d0.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      PID:2888

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
eafc3a8f47cfb8ea52072e96296f128b

SHA1
37d82f44029c58befad2d1056839b4dba2ec27ac

SHA256
e78a16f4aed2b5faf925559929539e1ef9c6730bd06bf1fa9de35fe2576e6740

SHA512
b317e8e94dd457c6c62d95d1dd0fb03da76f4584cbfe83188c63c429aa8dfbc642715f7ff4bb86b2198af343cc20b41db036a5a458a902052764010a2ce6eff7

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

Filesize
170B

MD5
7781bf187a457f67c27e06acdec78e1c

SHA1
345b5712028bf9c262cb0e03a9540d72c4515031

SHA256
18de3322ecc791e3e4156a1a274d16a06b68d34a62372c5b8abe41ad9d573699

SHA512
ce5a83f8565eeac4295c65f999fd5e7462362940c60a53acdc665f30f5b29c2928b42b9a65efc038af0df251a1261806b67ef58baf3ec9738872c9d9cb77d63f

Download Submit
C:\Users\Admin\AppData\Local\4ad6388c-ea18-43de-8a5e-d85d4abda12a\299a64d47dbc636d81fc76f4c6837c5c0faf4e0a8aa8460dfb8877c2d7fa41d0.exe

Filesize
814KB

MD5
8db858c113bf9da58fa9a7524c7023e9

SHA1
d2a8dad63d4c66d3ac446c64f7c682584ab8b069

SHA256
299a64d47dbc636d81fc76f4c6837c5c0faf4e0a8aa8460dfb8877c2d7fa41d0

SHA512
6336cd7afa29d5b8e36fb2279af3aa3e2da9f657a1769bf7dc6b6d60cff2e785f092fba3434af39abffe45cb9215bf7b852ced79d612f53c1b819f037042606f

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

Filesize
70KB

MD5
49aebf8cbd62d92ac215b2923fb1b9f5

SHA1
1723be06719828dda65ad804298d0431f6aff976

SHA256
b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

SHA512
bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

Download Submit
memory/784-1-0x0000000000240000-0x00000000002D2000-memory.dmp

Filesize
584KB

Download
memory/784-2-0x00000000004E0000-0x00000000005FB000-memory.dmp

Filesize
1.1MB

Download
memory/784-7-0x0000000000240000-0x00000000002D2000-memory.dmp

Filesize
584KB

Download
memory/784-0-0x0000000000240000-0x00000000002D2000-memory.dmp

Filesize
584KB

Download
memory/2096-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2096-27-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2096-9-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2096-8-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2096-3-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2748-29-0x0000000000400000-0x00000000004D9000-memory.dmp

Filesize
868KB

Download
memory/2748-35-0x0000000000400000-0x00000000004D9000-memory.dmp

Filesize
868KB

Download
memory/2748-28-0x0000000000220000-0x00000000002B2000-memory.dmp

Filesize
584KB

Download
memory/2888-36-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2888-34-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2888-48-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2888-49-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2888-50-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2888-54-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2888-63-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2888-66-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2888-65-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2888-67-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download