djvu | 6f017ce5d640d80fd0d66e73ebcfac88f60cb463813be6a96417040598f731a5

Analysis

max time kernel
118s
max time network
119s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
26-12-2024 03:31

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General

Target

6f017ce5d640d80fd0d66e73ebcfac88f60cb463813be6a96417040598f731a5.exe
Size

695KB
MD5

55003980eb9dd9febae3b655f9ecfab2
SHA1

0c3c46840f5cc4e8267ee121797a56eedefd12eb
SHA256

6f017ce5d640d80fd0d66e73ebcfac88f60cb463813be6a96417040598f731a5
SHA512

a89bb0fe852590f1600786799e55fd2ecaa47ad62d40e569ff23f5b1c185edab58acfafd9b0dff319d2cb2e88d9901fc86a039f36fd3f028565750cabc1cbd5a
SSDEEP

12288:38ffVfT7CXB5JOJRH0LflFV0jXtYLYL7fhImKBZmjSLiA3DtrFFk3I:381ve5Je0zlFctZ/fVKBIjDATRk3I

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

http://cajgtus.com/test1/get.php

Attributes

extension
.held
offline_id
vyhLHcV0DMKjS0CgDoJGF0yJ299laBK7lZQM9Tt1
payload_url
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. 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: 0879held

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 15 IoCs

resource	yara_rule
behavioral1/memory/2024-1-0x0000000000640000-0x000000000075B000-memory.dmp	family_djvu
behavioral1/memory/2336-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2336-7-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2336-8-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2336-28-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2656-34-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2656-36-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2656-48-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2656-50-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2656-49-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2656-51-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2656-56-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2656-53-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2656-55-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2656-57-0x0000000000400000-0x0000000000537000-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
2692	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-1-5-21-3290804112-2823094203-3137964600-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\0bc8cbb3-612b-4f2e-8b2a-b48727b75b31\\6f017ce5d640d80fd0d66e73ebcfac88f60cb463813be6a96417040598f731a5.exe\" --AutoStart"	6f017ce5d640d80fd0d66e73ebcfac88f60cb463813be6a96417040598f731a5.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
4	api.2ip.ua
5	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 2024 set thread context of 2336	2024	6f017ce5d640d80fd0d66e73ebcfac88f60cb463813be6a96417040598f731a5.exe	31
PID 2672 set thread context of 2656	2672	6f017ce5d640d80fd0d66e73ebcfac88f60cb463813be6a96417040598f731a5.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	6f017ce5d640d80fd0d66e73ebcfac88f60cb463813be6a96417040598f731a5.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	6f017ce5d640d80fd0d66e73ebcfac88f60cb463813be6a96417040598f731a5.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	icacls.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	6f017ce5d640d80fd0d66e73ebcfac88f60cb463813be6a96417040598f731a5.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	6f017ce5d640d80fd0d66e73ebcfac88f60cb463813be6a96417040598f731a5.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2336	6f017ce5d640d80fd0d66e73ebcfac88f60cb463813be6a96417040598f731a5.exe
2336	6f017ce5d640d80fd0d66e73ebcfac88f60cb463813be6a96417040598f731a5.exe
2656	6f017ce5d640d80fd0d66e73ebcfac88f60cb463813be6a96417040598f731a5.exe
2656	6f017ce5d640d80fd0d66e73ebcfac88f60cb463813be6a96417040598f731a5.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2024 wrote to memory of 2336	2024	6f017ce5d640d80fd0d66e73ebcfac88f60cb463813be6a96417040598f731a5.exe	31
PID 2024 wrote to memory of 2336	2024	6f017ce5d640d80fd0d66e73ebcfac88f60cb463813be6a96417040598f731a5.exe	31
PID 2024 wrote to memory of 2336	2024	6f017ce5d640d80fd0d66e73ebcfac88f60cb463813be6a96417040598f731a5.exe	31
PID 2024 wrote to memory of 2336	2024	6f017ce5d640d80fd0d66e73ebcfac88f60cb463813be6a96417040598f731a5.exe	31
PID 2024 wrote to memory of 2336	2024	6f017ce5d640d80fd0d66e73ebcfac88f60cb463813be6a96417040598f731a5.exe	31
PID 2024 wrote to memory of 2336	2024	6f017ce5d640d80fd0d66e73ebcfac88f60cb463813be6a96417040598f731a5.exe	31
PID 2024 wrote to memory of 2336	2024	6f017ce5d640d80fd0d66e73ebcfac88f60cb463813be6a96417040598f731a5.exe	31
PID 2024 wrote to memory of 2336	2024	6f017ce5d640d80fd0d66e73ebcfac88f60cb463813be6a96417040598f731a5.exe	31
PID 2024 wrote to memory of 2336	2024	6f017ce5d640d80fd0d66e73ebcfac88f60cb463813be6a96417040598f731a5.exe	31
PID 2024 wrote to memory of 2336	2024	6f017ce5d640d80fd0d66e73ebcfac88f60cb463813be6a96417040598f731a5.exe	31
PID 2024 wrote to memory of 2336	2024	6f017ce5d640d80fd0d66e73ebcfac88f60cb463813be6a96417040598f731a5.exe	31
PID 2336 wrote to memory of 2692	2336	6f017ce5d640d80fd0d66e73ebcfac88f60cb463813be6a96417040598f731a5.exe	33
PID 2336 wrote to memory of 2692	2336	6f017ce5d640d80fd0d66e73ebcfac88f60cb463813be6a96417040598f731a5.exe	33
PID 2336 wrote to memory of 2692	2336	6f017ce5d640d80fd0d66e73ebcfac88f60cb463813be6a96417040598f731a5.exe	33
PID 2336 wrote to memory of 2692	2336	6f017ce5d640d80fd0d66e73ebcfac88f60cb463813be6a96417040598f731a5.exe	33
PID 2336 wrote to memory of 2672	2336	6f017ce5d640d80fd0d66e73ebcfac88f60cb463813be6a96417040598f731a5.exe	34
PID 2336 wrote to memory of 2672	2336	6f017ce5d640d80fd0d66e73ebcfac88f60cb463813be6a96417040598f731a5.exe	34
PID 2336 wrote to memory of 2672	2336	6f017ce5d640d80fd0d66e73ebcfac88f60cb463813be6a96417040598f731a5.exe	34
PID 2336 wrote to memory of 2672	2336	6f017ce5d640d80fd0d66e73ebcfac88f60cb463813be6a96417040598f731a5.exe	34
PID 2672 wrote to memory of 2656	2672	6f017ce5d640d80fd0d66e73ebcfac88f60cb463813be6a96417040598f731a5.exe	35
PID 2672 wrote to memory of 2656	2672	6f017ce5d640d80fd0d66e73ebcfac88f60cb463813be6a96417040598f731a5.exe	35
PID 2672 wrote to memory of 2656	2672	6f017ce5d640d80fd0d66e73ebcfac88f60cb463813be6a96417040598f731a5.exe	35
PID 2672 wrote to memory of 2656	2672	6f017ce5d640d80fd0d66e73ebcfac88f60cb463813be6a96417040598f731a5.exe	35
PID 2672 wrote to memory of 2656	2672	6f017ce5d640d80fd0d66e73ebcfac88f60cb463813be6a96417040598f731a5.exe	35
PID 2672 wrote to memory of 2656	2672	6f017ce5d640d80fd0d66e73ebcfac88f60cb463813be6a96417040598f731a5.exe	35
PID 2672 wrote to memory of 2656	2672	6f017ce5d640d80fd0d66e73ebcfac88f60cb463813be6a96417040598f731a5.exe	35
PID 2672 wrote to memory of 2656	2672	6f017ce5d640d80fd0d66e73ebcfac88f60cb463813be6a96417040598f731a5.exe	35
PID 2672 wrote to memory of 2656	2672	6f017ce5d640d80fd0d66e73ebcfac88f60cb463813be6a96417040598f731a5.exe	35
PID 2672 wrote to memory of 2656	2672	6f017ce5d640d80fd0d66e73ebcfac88f60cb463813be6a96417040598f731a5.exe	35
PID 2672 wrote to memory of 2656	2672	6f017ce5d640d80fd0d66e73ebcfac88f60cb463813be6a96417040598f731a5.exe	35

C:\Users\Admin\AppData\Local\Temp\6f017ce5d640d80fd0d66e73ebcfac88f60cb463813be6a96417040598f731a5.exe
"C:\Users\Admin\AppData\Local\Temp\6f017ce5d640d80fd0d66e73ebcfac88f60cb463813be6a96417040598f731a5.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2024
- C:\Users\Admin\AppData\Local\Temp\6f017ce5d640d80fd0d66e73ebcfac88f60cb463813be6a96417040598f731a5.exe
  "C:\Users\Admin\AppData\Local\Temp\6f017ce5d640d80fd0d66e73ebcfac88f60cb463813be6a96417040598f731a5.exe"
  2⤵
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:2336
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\0bc8cbb3-612b-4f2e-8b2a-b48727b75b31" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    - System Location Discovery: System Language Discovery
    PID:2692
- - C:\Users\Admin\AppData\Local\Temp\6f017ce5d640d80fd0d66e73ebcfac88f60cb463813be6a96417040598f731a5.exe
    "C:\Users\Admin\AppData\Local\Temp\6f017ce5d640d80fd0d66e73ebcfac88f60cb463813be6a96417040598f731a5.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2672
  - - C:\Users\Admin\AppData\Local\Temp\6f017ce5d640d80fd0d66e73ebcfac88f60cb463813be6a96417040598f731a5.exe
      "C:\Users\Admin\AppData\Local\Temp\6f017ce5d640d80fd0d66e73ebcfac88f60cb463813be6a96417040598f731a5.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      PID:2656

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
44b2ab781ea32113effb5ac8582f95c3

SHA1
4faaf698ee147f76810907c53f3f782e59d64061

SHA256
47b7bd0275a8f2106f38db1e6a0902246df3a0d610df2f390343f8b7af934271

SHA512
d645b57c8edb5da88ef1a88c5c18e491f9f51e25f595b70e586115f420bb56d0b3b722e05a9faf20692543b9d38245b59b3b18090272d1c7fe60f201314497da

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

Filesize
170B

MD5
89a519fe0c2155452e9c934ea4c9573b

SHA1
7ca106ecf558eebb2b2eeb5a1e6bf7676c56bd4a

SHA256
954a03d0abfdcd707c750cd37ec3db488d49018e22b3cb3d3c9e424250dac56c

SHA512
dc5237c74601f0a20c5cec3a111c3043c845da3293b812e42fbc3cf9b86f5f37f23ddb513896dfd2811c808f5e89717224c0eb5ae7f890170935ba31b653cf83

Download Submit
C:\Users\Admin\AppData\Local\0bc8cbb3-612b-4f2e-8b2a-b48727b75b31\6f017ce5d640d80fd0d66e73ebcfac88f60cb463813be6a96417040598f731a5.exe

Filesize
695KB

MD5
55003980eb9dd9febae3b655f9ecfab2

SHA1
0c3c46840f5cc4e8267ee121797a56eedefd12eb

SHA256
6f017ce5d640d80fd0d66e73ebcfac88f60cb463813be6a96417040598f731a5

SHA512
a89bb0fe852590f1600786799e55fd2ecaa47ad62d40e569ff23f5b1c185edab58acfafd9b0dff319d2cb2e88d9901fc86a039f36fd3f028565750cabc1cbd5a

Download Submit
C:\Users\Admin\AppData\Local\Temp\CabEE64.tmp

Filesize
70KB

MD5
49aebf8cbd62d92ac215b2923fb1b9f5

SHA1
1723be06719828dda65ad804298d0431f6aff976

SHA256
b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

SHA512
bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

Download Submit
memory/2024-0-0x00000000002B0000-0x0000000000342000-memory.dmp

Filesize
584KB

Download
memory/2024-1-0x0000000000640000-0x000000000075B000-memory.dmp

Filesize
1.1MB

Download
memory/2024-6-0x00000000002B0000-0x0000000000342000-memory.dmp

Filesize
584KB

Download
memory/2336-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2336-28-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2336-8-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2336-7-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2336-2-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2656-48-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2656-36-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2656-34-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2656-50-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2656-49-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2656-51-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2656-56-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2656-53-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2656-55-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2656-57-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2672-35-0x0000000000400000-0x00000000004B4000-memory.dmp

Filesize
720KB

Download
memory/2672-29-0x0000000000400000-0x00000000004B4000-memory.dmp

Filesize
720KB

Download