djvu | e5d1067f803ffebbca20c29d6be72c150ffbc23a2ba5c017a68bbd70ba6eb451

General

Target

20240906b44a4cb8600e10c1c9fc218f1af0abdbstop.exe
Size

1.1MB
MD5

b44a4cb8600e10c1c9fc218f1af0abdb
SHA1

64a3c362ab62d76dc9e589ec0d728592b830c71f
SHA256

e5d1067f803ffebbca20c29d6be72c150ffbc23a2ba5c017a68bbd70ba6eb451
SHA512

8e78aee3d63d461f1fb77f2a9ac2aaa96f967d2f54d7077175007446362c21244a63e17571847c1681538f7c507df71b5e27bea3889c1ce8436f5b1096b5fe8e
SSDEEP

24576:ZBUIKn/vwOXGUXAjCymYZiVtElVIBT2roqnTSSxWeT/dRPOO8bWQHUq7:F0dwAYZt6C31WeTVRPOhb7Uq7

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

C2

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

Attributes

extension
.sspq
offline_id
ppmn5q6DzrybvhIkCuuqaearFxJ8Rc3difSaWft1
payload_url
http://vrta.top/files/penelop/updatewin1.exe

http://vrta.top/files/penelop/updatewin2.exe

http://vrta.top/files/penelop/updatewin.exe

http://vrta.top/files/penelop/3.exe

http://vrta.top/files/penelop/4.exe

http://vrta.top/files/penelop/5.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-eglcxvZv1s 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: 0304ewgfDd

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 1 IoCs

resource	yara_rule
behavioral2/files/0x0009000000023407-9.dat	family_djvu

Djvu Ransomware
Ransomware which is a variant of the STOP family.
ransomware djvu
Renames multiple (158) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
ransomware

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-355097885-2402257403-2971294179-1000\Control Panel\International\Geo\Nation	20240906b44a4cb8600e10c1c9fc218f1af0abdbstop.exe

Executes dropped EXE 1 IoCs

pid	Process
1328	20240906b44a4cb8600e10c1c9fc218f1af0abdbstop.exe

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
3760	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-1-5-21-355097885-2402257403-2971294179-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\cb6f942e-2750-4806-99a4-c1042d665ce1\\20240906b44a4cb8600e10c1c9fc218f1af0abdbstop.exe\" --AutoStart"	20240906b44a4cb8600e10c1c9fc218f1af0abdbstop.exe

Looks up external IP address via web service 4 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
1	api.2ip.ua
2	api.2ip.ua
13	api.2ip.ua
57	api.2ip.ua

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 4 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	20240906b44a4cb8600e10c1c9fc218f1af0abdbstop.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	icacls.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	20240906b44a4cb8600e10c1c9fc218f1af0abdbstop.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	20240906b44a4cb8600e10c1c9fc218f1af0abdbstop.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
1976	20240906b44a4cb8600e10c1c9fc218f1af0abdbstop.exe
1976	20240906b44a4cb8600e10c1c9fc218f1af0abdbstop.exe
4416	20240906b44a4cb8600e10c1c9fc218f1af0abdbstop.exe
4416	20240906b44a4cb8600e10c1c9fc218f1af0abdbstop.exe
1328	20240906b44a4cb8600e10c1c9fc218f1af0abdbstop.exe
1328	20240906b44a4cb8600e10c1c9fc218f1af0abdbstop.exe
4416	20240906b44a4cb8600e10c1c9fc218f1af0abdbstop.exe
4416	20240906b44a4cb8600e10c1c9fc218f1af0abdbstop.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 1976 wrote to memory of 3760	1976	20240906b44a4cb8600e10c1c9fc218f1af0abdbstop.exe	88
PID 1976 wrote to memory of 3760	1976	20240906b44a4cb8600e10c1c9fc218f1af0abdbstop.exe	88
PID 1976 wrote to memory of 3760	1976	20240906b44a4cb8600e10c1c9fc218f1af0abdbstop.exe	88
PID 1976 wrote to memory of 4416	1976	20240906b44a4cb8600e10c1c9fc218f1af0abdbstop.exe	89
PID 1976 wrote to memory of 4416	1976	20240906b44a4cb8600e10c1c9fc218f1af0abdbstop.exe	89
PID 1976 wrote to memory of 4416	1976	20240906b44a4cb8600e10c1c9fc218f1af0abdbstop.exe	89

C:\Users\Admin\AppData\Local\Temp\20240906b44a4cb8600e10c1c9fc218f1af0abdbstop.exe
"C:\Users\Admin\AppData\Local\Temp\20240906b44a4cb8600e10c1c9fc218f1af0abdbstop.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:1976
- C:\Windows\SysWOW64\icacls.exe
  icacls "C:\Users\Admin\AppData\Local\cb6f942e-2750-4806-99a4-c1042d665ce1" /deny *S-1-1-0:(OI)(CI)(DE,DC)
  2⤵
  - Modifies file permissions
  - System Location Discovery: System Language Discovery
  PID:3760
- C:\Users\Admin\AppData\Local\Temp\20240906b44a4cb8600e10c1c9fc218f1af0abdbstop.exe
  "C:\Users\Admin\AppData\Local\Temp\20240906b44a4cb8600e10c1c9fc218f1af0abdbstop.exe" --Admin IsNotAutoStart IsNotTask
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  PID:4416

C:\Users\Admin\AppData\Local\cb6f942e-2750-4806-99a4-c1042d665ce1\20240906b44a4cb8600e10c1c9fc218f1af0abdbstop.exe
C:\Users\Admin\AppData\Local\cb6f942e-2750-4806-99a4-c1042d665ce1\20240906b44a4cb8600e10c1c9fc218f1af0abdbstop.exe --Task
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
PID:1328

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

File and Directory Permissions Modification

Modify Registry

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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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
b20eaf0267ed0c79f1c18482d7e149db

SHA1
bee569d84ecf7af2e6d5655f0d4683a9bc710aeb

SHA256
61b84f3619e663dee51b3d386323b972f4d8217ee5490c487a5fab2782037d03

SHA512
839c8edf5e98c0f21df0b686f6935f88a6c0fbc41c19a1f4a80328999c88b487b7d52f196791c603ddeb85da32da61469c006c51a4425e40bfe78317fb5d81c3

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

Filesize
170B

MD5
c16de3bc5701c9e02aa827c2b8502bae

SHA1
8c216c3660e067ddc628e967cf9233c9818b815e

SHA256
e7c38d193cafaef94bc2ac8493e11acfc5cd4955960e6082eef933c791266f17

SHA512
4ade9efd8991d2aca42c0375565b1546f7478dea31b04cb0c4e789cd3fdeb9211feca46205ce33b506eab2e745e36112c7ccf820d4f15842f025216682f4bc71

Download Submit
C:\Users\Admin\AppData\Local\cb6f942e-2750-4806-99a4-c1042d665ce1\20240906b44a4cb8600e10c1c9fc218f1af0abdbstop.exe

Filesize
1.1MB

MD5
b44a4cb8600e10c1c9fc218f1af0abdb

SHA1
64a3c362ab62d76dc9e589ec0d728592b830c71f

SHA256
e5d1067f803ffebbca20c29d6be72c150ffbc23a2ba5c017a68bbd70ba6eb451

SHA512
8e78aee3d63d461f1fb77f2a9ac2aaa96f967d2f54d7077175007446362c21244a63e17571847c1681538f7c507df71b5e27bea3889c1ce8436f5b1096b5fe8e

Download Submit

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads