djvu | 1775ad37586327ca8ed067f898056f7a6aa5d6037d2a319dd372e54547024872

General

Target

2024-09-06_d347d2311e222e500c2c57177da3401b_stop.exe
Size

1.1MB
MD5

d347d2311e222e500c2c57177da3401b
SHA1

4286cbc13cd3c98390cd64f29d02589697b39390
SHA256

1775ad37586327ca8ed067f898056f7a6aa5d6037d2a319dd372e54547024872
SHA512

3335eba799b54cc76c23862d2c41c55fe91d15163ca937a7e937ff93ca1e7d2ab283cc36bac5ac7bcdfb41d861aa851bd6b624303f718727574a54671812ed37
SSDEEP

24576:ZBUIKn/vwOXGUXAjCymYZiVtElVIBT2roqnTSSxWeT/dRPOO8TWQHUq7:F0dwAYZt6C31WeTVRPOhT7Uq7

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
behavioral1/files/0x0007000000019220-16.dat	family_djvu

Djvu Ransomware
Ransomware which is a variant of the STOP family.
ransomware djvu

Executes dropped EXE 1 IoCs

pid	Process
1472	2024-09-06_d347d2311e222e500c2c57177da3401b_stop.exe

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
2656	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-1-5-21-312935884-697965778-3955649944-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\b723769d-2447-4c9d-bebc-e8e08a2d6d9c\\2024-09-06_d347d2311e222e500c2c57177da3401b_stop.exe\" --AutoStart"	2024-09-06_d347d2311e222e500c2c57177da3401b_stop.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
3	api.2ip.ua
4	api.2ip.ua
9	api.2ip.ua
19	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	2024-09-06_d347d2311e222e500c2c57177da3401b_stop.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	icacls.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2024-09-06_d347d2311e222e500c2c57177da3401b_stop.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2024-09-06_d347d2311e222e500c2c57177da3401b_stop.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
2672	2024-09-06_d347d2311e222e500c2c57177da3401b_stop.exe
2672	2024-09-06_d347d2311e222e500c2c57177da3401b_stop.exe
3060	2024-09-06_d347d2311e222e500c2c57177da3401b_stop.exe
3060	2024-09-06_d347d2311e222e500c2c57177da3401b_stop.exe
1472	2024-09-06_d347d2311e222e500c2c57177da3401b_stop.exe
1472	2024-09-06_d347d2311e222e500c2c57177da3401b_stop.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 2672 wrote to memory of 2656	2672	2024-09-06_d347d2311e222e500c2c57177da3401b_stop.exe	30
PID 2672 wrote to memory of 2656	2672	2024-09-06_d347d2311e222e500c2c57177da3401b_stop.exe	30
PID 2672 wrote to memory of 2656	2672	2024-09-06_d347d2311e222e500c2c57177da3401b_stop.exe	30
PID 2672 wrote to memory of 2656	2672	2024-09-06_d347d2311e222e500c2c57177da3401b_stop.exe	30
PID 2672 wrote to memory of 3060	2672	2024-09-06_d347d2311e222e500c2c57177da3401b_stop.exe	31
PID 2672 wrote to memory of 3060	2672	2024-09-06_d347d2311e222e500c2c57177da3401b_stop.exe	31
PID 2672 wrote to memory of 3060	2672	2024-09-06_d347d2311e222e500c2c57177da3401b_stop.exe	31
PID 2672 wrote to memory of 3060	2672	2024-09-06_d347d2311e222e500c2c57177da3401b_stop.exe	31
PID 1700 wrote to memory of 1472	1700	taskeng.exe	38
PID 1700 wrote to memory of 1472	1700	taskeng.exe	38
PID 1700 wrote to memory of 1472	1700	taskeng.exe	38
PID 1700 wrote to memory of 1472	1700	taskeng.exe	38

C:\Users\Admin\AppData\Local\Temp\2024-09-06_d347d2311e222e500c2c57177da3401b_stop.exe
"C:\Users\Admin\AppData\Local\Temp\2024-09-06_d347d2311e222e500c2c57177da3401b_stop.exe"
1⤵
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2672
- C:\Windows\SysWOW64\icacls.exe
  icacls "C:\Users\Admin\AppData\Local\b723769d-2447-4c9d-bebc-e8e08a2d6d9c" /deny *S-1-1-0:(OI)(CI)(DE,DC)
  2⤵
  - Modifies file permissions
  - System Location Discovery: System Language Discovery
  PID:2656
- C:\Users\Admin\AppData\Local\Temp\2024-09-06_d347d2311e222e500c2c57177da3401b_stop.exe
  "C:\Users\Admin\AppData\Local\Temp\2024-09-06_d347d2311e222e500c2c57177da3401b_stop.exe" --Admin IsNotAutoStart IsNotTask
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  PID:3060

C:\Windows\system32\taskeng.exe
taskeng.exe {55D6A4FB-0A7C-416B-804C-CC0A06A5B43A} S-1-5-21-312935884-697965778-3955649944-1000:MXQFNXLT\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:1700
- C:\Users\Admin\AppData\Local\b723769d-2447-4c9d-bebc-e8e08a2d6d9c\2024-09-06_d347d2311e222e500c2c57177da3401b_stop.exe
  C:\Users\Admin\AppData\Local\b723769d-2447-4c9d-bebc-e8e08a2d6d9c\2024-09-06_d347d2311e222e500c2c57177da3401b_stop.exe --Task
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  PID:1472

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

System Information Discovery

1

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
725ea86443181c57e7caf77cfcc76930

SHA1
5eb79dbcec1299503de56832db8776a4178c96ea

SHA256
f0d2232d78b6d52db21589b103bbd65ecd8952f54546c949d6a7bf14da8d24cf

SHA512
0a7e0044de49ea5c2053456d30084b827510cdb05c5cdfb108e76847321ea347e7ed02e96606b5bd628bc5b7600b6cf149ba0700e27a7ebaebc534fde0e80ba7

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015

Filesize
342B

MD5
92f8d817d3a7f2a386030252032a0c1e

SHA1
17d88d807970f45143400ec24b0d4b92ca240b63

SHA256
38f7216fa7009f587d30cce2d6b783b44daeeaee9c9a8b1c45a55b90bc96dd5d

SHA512
9d159e2a0680d8f7a3e44792c8f8a2a7aed6dad2caee72a44b2d9d8e9bace8e766b22faa7ea3fc69809a3f587fe856169f19d8b8e66bc84b45ebd2babfef4385

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

Filesize
170B

MD5
cd22f10632498f9ead77850664ca4649

SHA1
7034a858238ac7efdb1cb5cafa538ad8b0b97540

SHA256
e6671d8131f87400fd5a22fcf5691e32528547201f6d4a8a01ed0bddfa7385ba

SHA512
ce15c240c4b9e0c3ccd59f386faf63c949a130a969d1fec2b731e496545710c3ecfa71ac18faf4c773b02dca0779e0bd43eaa54dd202843f647336bd949268e4

Download Submit
C:\Users\Admin\AppData\Local\Temp\Cab4A2.tmp

Filesize
70KB

MD5
49aebf8cbd62d92ac215b2923fb1b9f5

SHA1
1723be06719828dda65ad804298d0431f6aff976

SHA256
b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

SHA512
bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

Download Submit
C:\Users\Admin\AppData\Local\Temp\Tar2E90.tmp

Filesize
181KB

MD5
4ea6026cf93ec6338144661bf1202cd1

SHA1
a1dec9044f750ad887935a01430bf49322fbdcb7

SHA256
8efbc21559ef8b1bcf526800d8070baad42474ce7198e26fa771dbb41a76b1d8

SHA512
6c7e0980e39aacf4c3689802353f464a08cd17753bd210ee997e5f2a455deb4f287a9ef74d84579dbde49bc96213cd2b8b247723919c412ea980aa6e6bfe218b

Download Submit
C:\Users\Admin\AppData\Local\b723769d-2447-4c9d-bebc-e8e08a2d6d9c\2024-09-06_d347d2311e222e500c2c57177da3401b_stop.exe

Filesize
1.1MB

MD5
d347d2311e222e500c2c57177da3401b

SHA1
4286cbc13cd3c98390cd64f29d02589697b39390

SHA256
1775ad37586327ca8ed067f898056f7a6aa5d6037d2a319dd372e54547024872

SHA512
3335eba799b54cc76c23862d2c41c55fe91d15163ca937a7e937ff93ca1e7d2ab283cc36bac5ac7bcdfb41d861aa851bd6b624303f718727574a54671812ed37

Download Submit

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads