djvu | 0e06e9585cc9db33ee999ca4de668ab64ef6e9fa928ae6541b2f1ec68ff09da8

max time kernel
147s
max time network
124s
platform
windows7_x64
resource
win7-20240705-en
resource tags

arch:x64arch:x86image:win7-20240705-enlocale:en-usos:windows7-x64system
submitted
03-08-2024 15:52

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General

Target

4bf2dace8a23551a3cd374a14b68cef6185aa18f9148dac8bf77f19f734d3ad7.exe
Size

787KB
MD5

0b862b9c889d4bdc6f0bac7d702d8753
SHA1

fdc030df123e6e6a712cbc960a2e7c63266bf040
SHA256

4bf2dace8a23551a3cd374a14b68cef6185aa18f9148dac8bf77f19f734d3ad7
SHA512

4f7284a625b4909f9a0d80023c1dbfe3ed2de8a14fdf9a5bd3687d7e2fb21e265ee6cca613e4e6c8cab35f806501b155e6ed70a11530eb1cc78dbc38b22d3e8b
SSDEEP

24576:reKt4RjnJ+wWEr55fRue+cfxiskJM0BPA:rORdGA55fkcJinM0BI

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

http://astdg.top/nddddhsspen6/get.php

Attributes

extension
.moqs
offline_id
CatwRkqdYh2Jomn6DqwFoGgcSbDsle1xlE1NPtt1
payload_url
http://securebiz.org/dl/build2.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-N3p42CffoV 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: 0318ewgfDd

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 15 IoCs

resource	yara_rule
behavioral17/memory/1048-6-0x00000000022C0000-0x00000000023DB000-memory.dmp	family_djvu
behavioral17/memory/2240-7-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral17/memory/2240-8-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral17/memory/2240-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral17/memory/2240-29-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral17/memory/2980-34-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral17/memory/2980-36-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral17/memory/2980-50-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral17/memory/2980-51-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral17/memory/2980-52-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral17/memory/2980-57-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral17/memory/2980-58-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral17/memory/2980-55-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral17/memory/2980-59-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral17/memory/2980-60-0x0000000000400000-0x0000000000537000-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
2772	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-1-5-21-2172136094-3310281978-782691160-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\6a52255f-45a0-4ffb-a6b6-da0ca86141f8\\4bf2dace8a23551a3cd374a14b68cef6185aa18f9148dac8bf77f19f734d3ad7.exe\" --AutoStart"	4bf2dace8a23551a3cd374a14b68cef6185aa18f9148dac8bf77f19f734d3ad7.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 1048 set thread context of 2240	1048	4bf2dace8a23551a3cd374a14b68cef6185aa18f9148dac8bf77f19f734d3ad7.exe	30
PID 2256 set thread context of 2980	2256	4bf2dace8a23551a3cd374a14b68cef6185aa18f9148dac8bf77f19f734d3ad7.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	icacls.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	4bf2dace8a23551a3cd374a14b68cef6185aa18f9148dac8bf77f19f734d3ad7.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	4bf2dace8a23551a3cd374a14b68cef6185aa18f9148dac8bf77f19f734d3ad7.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	4bf2dace8a23551a3cd374a14b68cef6185aa18f9148dac8bf77f19f734d3ad7.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	4bf2dace8a23551a3cd374a14b68cef6185aa18f9148dac8bf77f19f734d3ad7.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2240	4bf2dace8a23551a3cd374a14b68cef6185aa18f9148dac8bf77f19f734d3ad7.exe
2240	4bf2dace8a23551a3cd374a14b68cef6185aa18f9148dac8bf77f19f734d3ad7.exe
2980	4bf2dace8a23551a3cd374a14b68cef6185aa18f9148dac8bf77f19f734d3ad7.exe
2980	4bf2dace8a23551a3cd374a14b68cef6185aa18f9148dac8bf77f19f734d3ad7.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 1048 wrote to memory of 2240	1048	4bf2dace8a23551a3cd374a14b68cef6185aa18f9148dac8bf77f19f734d3ad7.exe	30
PID 1048 wrote to memory of 2240	1048	4bf2dace8a23551a3cd374a14b68cef6185aa18f9148dac8bf77f19f734d3ad7.exe	30
PID 1048 wrote to memory of 2240	1048	4bf2dace8a23551a3cd374a14b68cef6185aa18f9148dac8bf77f19f734d3ad7.exe	30
PID 1048 wrote to memory of 2240	1048	4bf2dace8a23551a3cd374a14b68cef6185aa18f9148dac8bf77f19f734d3ad7.exe	30
PID 1048 wrote to memory of 2240	1048	4bf2dace8a23551a3cd374a14b68cef6185aa18f9148dac8bf77f19f734d3ad7.exe	30
PID 1048 wrote to memory of 2240	1048	4bf2dace8a23551a3cd374a14b68cef6185aa18f9148dac8bf77f19f734d3ad7.exe	30
PID 1048 wrote to memory of 2240	1048	4bf2dace8a23551a3cd374a14b68cef6185aa18f9148dac8bf77f19f734d3ad7.exe	30
PID 1048 wrote to memory of 2240	1048	4bf2dace8a23551a3cd374a14b68cef6185aa18f9148dac8bf77f19f734d3ad7.exe	30
PID 1048 wrote to memory of 2240	1048	4bf2dace8a23551a3cd374a14b68cef6185aa18f9148dac8bf77f19f734d3ad7.exe	30
PID 1048 wrote to memory of 2240	1048	4bf2dace8a23551a3cd374a14b68cef6185aa18f9148dac8bf77f19f734d3ad7.exe	30
PID 1048 wrote to memory of 2240	1048	4bf2dace8a23551a3cd374a14b68cef6185aa18f9148dac8bf77f19f734d3ad7.exe	30
PID 2240 wrote to memory of 2772	2240	4bf2dace8a23551a3cd374a14b68cef6185aa18f9148dac8bf77f19f734d3ad7.exe	33
PID 2240 wrote to memory of 2772	2240	4bf2dace8a23551a3cd374a14b68cef6185aa18f9148dac8bf77f19f734d3ad7.exe	33
PID 2240 wrote to memory of 2772	2240	4bf2dace8a23551a3cd374a14b68cef6185aa18f9148dac8bf77f19f734d3ad7.exe	33
PID 2240 wrote to memory of 2772	2240	4bf2dace8a23551a3cd374a14b68cef6185aa18f9148dac8bf77f19f734d3ad7.exe	33
PID 2240 wrote to memory of 2256	2240	4bf2dace8a23551a3cd374a14b68cef6185aa18f9148dac8bf77f19f734d3ad7.exe	34
PID 2240 wrote to memory of 2256	2240	4bf2dace8a23551a3cd374a14b68cef6185aa18f9148dac8bf77f19f734d3ad7.exe	34
PID 2240 wrote to memory of 2256	2240	4bf2dace8a23551a3cd374a14b68cef6185aa18f9148dac8bf77f19f734d3ad7.exe	34
PID 2240 wrote to memory of 2256	2240	4bf2dace8a23551a3cd374a14b68cef6185aa18f9148dac8bf77f19f734d3ad7.exe	34
PID 2256 wrote to memory of 2980	2256	4bf2dace8a23551a3cd374a14b68cef6185aa18f9148dac8bf77f19f734d3ad7.exe	35
PID 2256 wrote to memory of 2980	2256	4bf2dace8a23551a3cd374a14b68cef6185aa18f9148dac8bf77f19f734d3ad7.exe	35
PID 2256 wrote to memory of 2980	2256	4bf2dace8a23551a3cd374a14b68cef6185aa18f9148dac8bf77f19f734d3ad7.exe	35
PID 2256 wrote to memory of 2980	2256	4bf2dace8a23551a3cd374a14b68cef6185aa18f9148dac8bf77f19f734d3ad7.exe	35
PID 2256 wrote to memory of 2980	2256	4bf2dace8a23551a3cd374a14b68cef6185aa18f9148dac8bf77f19f734d3ad7.exe	35
PID 2256 wrote to memory of 2980	2256	4bf2dace8a23551a3cd374a14b68cef6185aa18f9148dac8bf77f19f734d3ad7.exe	35
PID 2256 wrote to memory of 2980	2256	4bf2dace8a23551a3cd374a14b68cef6185aa18f9148dac8bf77f19f734d3ad7.exe	35
PID 2256 wrote to memory of 2980	2256	4bf2dace8a23551a3cd374a14b68cef6185aa18f9148dac8bf77f19f734d3ad7.exe	35
PID 2256 wrote to memory of 2980	2256	4bf2dace8a23551a3cd374a14b68cef6185aa18f9148dac8bf77f19f734d3ad7.exe	35
PID 2256 wrote to memory of 2980	2256	4bf2dace8a23551a3cd374a14b68cef6185aa18f9148dac8bf77f19f734d3ad7.exe	35
PID 2256 wrote to memory of 2980	2256	4bf2dace8a23551a3cd374a14b68cef6185aa18f9148dac8bf77f19f734d3ad7.exe	35

C:\Users\Admin\AppData\Local\Temp\4bf2dace8a23551a3cd374a14b68cef6185aa18f9148dac8bf77f19f734d3ad7.exe
"C:\Users\Admin\AppData\Local\Temp\4bf2dace8a23551a3cd374a14b68cef6185aa18f9148dac8bf77f19f734d3ad7.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1048
- C:\Users\Admin\AppData\Local\Temp\4bf2dace8a23551a3cd374a14b68cef6185aa18f9148dac8bf77f19f734d3ad7.exe
  "C:\Users\Admin\AppData\Local\Temp\4bf2dace8a23551a3cd374a14b68cef6185aa18f9148dac8bf77f19f734d3ad7.exe"
  2⤵
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:2240
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\6a52255f-45a0-4ffb-a6b6-da0ca86141f8" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    - System Location Discovery: System Language Discovery
    PID:2772
- - C:\Users\Admin\AppData\Local\Temp\4bf2dace8a23551a3cd374a14b68cef6185aa18f9148dac8bf77f19f734d3ad7.exe
    "C:\Users\Admin\AppData\Local\Temp\4bf2dace8a23551a3cd374a14b68cef6185aa18f9148dac8bf77f19f734d3ad7.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2256
  - - C:\Users\Admin\AppData\Local\Temp\4bf2dace8a23551a3cd374a14b68cef6185aa18f9148dac8bf77f19f734d3ad7.exe
      "C:\Users\Admin\AppData\Local\Temp\4bf2dace8a23551a3cd374a14b68cef6185aa18f9148dac8bf77f19f734d3ad7.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      PID:2980

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
7fb5fa1534dcf77f2125b2403b30a0ee

SHA1
365d96812a69ac0a4611ea4b70a3f306576cc3ea

SHA256
33a39e9ec2133230533a686ec43760026e014a3828c703707acbc150fe40fd6f

SHA512
a9279fd60505a1bfeef6fb07834cad0fd5be02fd405573fc1a5f59b991e9f88f5e81c32fe910f69bdc6585e71f02559895149eaf49c25b8ff955459fd60c0d2e

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
08bf086109500af152687737bdd8ed0d

SHA1
422b61515b43f5ff7fda1e6dab1bc321188a6aa7

SHA256
30a5f5325759490ebfd75ffb00241f04ab1dc065f97cefa164f56064ae8e9e90

SHA512
e19e214801f27cf8b07bcd613b125d0c068ccb7110c0ec556252afbb40fa7c97ab9fcc845687cfb1d70f89fae7928c679b93180a9dd26607017ac61a988533c5

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

Filesize
170B

MD5
b78119e73939b0f8ad4c10a87d023612

SHA1
0c2b3d1a19c3fd2c3edc1f3b72a41127adeb7db6

SHA256
de8705f4fd8e4dee5dc0856b019e1385a1610655c1c52f0477c32d689e7a99b8

SHA512
5a453bcb1aff616771fcb2dd85aaa6ce4e935af5f96fd76d882e3e3455db036dad3c7ab6c9656a11729fedfa5401ec65976384ee4d0f42ac8e0851c0fde8f8b1

Download Submit
C:\Users\Admin\AppData\Local\6a52255f-45a0-4ffb-a6b6-da0ca86141f8\4bf2dace8a23551a3cd374a14b68cef6185aa18f9148dac8bf77f19f734d3ad7.exe

Filesize
787KB

MD5
0b862b9c889d4bdc6f0bac7d702d8753

SHA1
fdc030df123e6e6a712cbc960a2e7c63266bf040

SHA256
4bf2dace8a23551a3cd374a14b68cef6185aa18f9148dac8bf77f19f734d3ad7

SHA512
4f7284a625b4909f9a0d80023c1dbfe3ed2de8a14fdf9a5bd3687d7e2fb21e265ee6cca613e4e6c8cab35f806501b155e6ed70a11530eb1cc78dbc38b22d3e8b

Download Submit
C:\Users\Admin\AppData\Local\Temp\CabE198.tmp

Filesize
70KB

MD5
49aebf8cbd62d92ac215b2923fb1b9f5

SHA1
1723be06719828dda65ad804298d0431f6aff976

SHA256
b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

SHA512
bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

Download Submit
memory/1048-5-0x0000000000220000-0x00000000002B2000-memory.dmp

Filesize
584KB

Download
memory/1048-6-0x00000000022C0000-0x00000000023DB000-memory.dmp

Filesize
1.1MB

Download
memory/1048-0-0x0000000000220000-0x00000000002B2000-memory.dmp

Filesize
584KB

Download
memory/2240-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2240-29-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2240-8-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2240-7-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2240-1-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2256-35-0x0000000000400000-0x000000000092E000-memory.dmp

Filesize
5.2MB

Download
memory/2256-28-0x00000000002A0000-0x0000000000332000-memory.dmp

Filesize
584KB

Download
memory/2980-36-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2980-34-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2980-50-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2980-51-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2980-52-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2980-57-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2980-58-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2980-55-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2980-59-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2980-60-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download