djvu | e5d1067f803ffebbca20c29d6be72c150ffbc23a2ba5c017a68bbd70ba6eb451

General

Target
20240906b44a4cb8600e10c1c9fc218f1af0abdbstop.exe
Size 1.1MB
Sample240906-hdvpds1fpr
SHA256 e5d1067f803ffebbca20c29d6be72c150ffbc23a2ba5c017a68bbd70ba6eb451
MD5 b44a4cb8600e10c1c9fc218f1af0abdb
SHA1 64a3c362ab62d76dc9e589ec0d728592b830c71f
SHA512 8e78aee3d63d461f1fb77f2a9ac2aaa96f967d2f54d7077175007446362c21244a63e17571847c1681538f7c507df71b5e27bea3889c1ce8436f5b1096b5fe8e
SSDEEP 24576:ZBUIKn/vwOXGUXAjCymYZiVtElVIBT2roqnTSSxWeT/dRPOO8bWQHUq7:F0dwAYZt6C31WeTVRPOhb7Uq7
MD5 SHA1 SHA512 SSDEEP

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/0x0008000000016c9f-16.dat	family_djvu

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

Executes dropped EXE 1 IoCs

pid	Process
1888	20240906b44a4cb8600e10c1c9fc218f1af0abdbstop.exe

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
2860	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-1-5-21-1506706701-1246725540-2219210854-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\ce8722fa-6906-409d-9fad-7e8aadfa351f\\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
9	api.2ip.ua
23	api.2ip.ua
3	api.2ip.ua
4	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	20240906b44a4cb8600e10c1c9fc218f1af0abdbstop.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	20240906b44a4cb8600e10c1c9fc218f1af0abdbstop.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	icacls.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
2536	20240906b44a4cb8600e10c1c9fc218f1af0abdbstop.exe
2536	20240906b44a4cb8600e10c1c9fc218f1af0abdbstop.exe
2732	20240906b44a4cb8600e10c1c9fc218f1af0abdbstop.exe
2732	20240906b44a4cb8600e10c1c9fc218f1af0abdbstop.exe
1888	20240906b44a4cb8600e10c1c9fc218f1af0abdbstop.exe
1888	20240906b44a4cb8600e10c1c9fc218f1af0abdbstop.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 2536 wrote to memory of 2860	2536	20240906b44a4cb8600e10c1c9fc218f1af0abdbstop.exe	29
PID 2536 wrote to memory of 2860	2536	20240906b44a4cb8600e10c1c9fc218f1af0abdbstop.exe	29
PID 2536 wrote to memory of 2860	2536	20240906b44a4cb8600e10c1c9fc218f1af0abdbstop.exe	29
PID 2536 wrote to memory of 2860	2536	20240906b44a4cb8600e10c1c9fc218f1af0abdbstop.exe	29
PID 2536 wrote to memory of 2732	2536	20240906b44a4cb8600e10c1c9fc218f1af0abdbstop.exe	30
PID 2536 wrote to memory of 2732	2536	20240906b44a4cb8600e10c1c9fc218f1af0abdbstop.exe	30
PID 2536 wrote to memory of 2732	2536	20240906b44a4cb8600e10c1c9fc218f1af0abdbstop.exe	30
PID 2536 wrote to memory of 2732	2536	20240906b44a4cb8600e10c1c9fc218f1af0abdbstop.exe	30
PID 2220 wrote to memory of 1888	2220	taskeng.exe	36
PID 2220 wrote to memory of 1888	2220	taskeng.exe	36
PID 2220 wrote to memory of 1888	2220	taskeng.exe	36
PID 2220 wrote to memory of 1888	2220	taskeng.exe	36

C:\Users\Admin\AppData\Local\Temp\20240906b44a4cb8600e10c1c9fc218f1af0abdbstop.exe
"C:\Users\Admin\AppData\Local\Temp\20240906b44a4cb8600e10c1c9fc218f1af0abdbstop.exe"
1⤵
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2536
- C:\Windows\SysWOW64\icacls.exe
  icacls "C:\Users\Admin\AppData\Local\ce8722fa-6906-409d-9fad-7e8aadfa351f" /deny *S-1-1-0:(OI)(CI)(DE,DC)
  2⤵
  - Modifies file permissions
  - System Location Discovery: System Language Discovery
  PID:2860
- 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:2732

C:\Windows\system32\taskeng.exe
taskeng.exe {91701F1B-A1AD-4911-98D4-5355D5B0E311} S-1-5-21-1506706701-1246725540-2219210854-1000:MUYDDIIS\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:2220
- C:\Users\Admin\AppData\Local\ce8722fa-6906-409d-9fad-7e8aadfa351f\20240906b44a4cb8600e10c1c9fc218f1af0abdbstop.exe
  C:\Users\Admin\AppData\Local\ce8722fa-6906-409d-9fad-7e8aadfa351f\20240906b44a4cb8600e10c1c9fc218f1af0abdbstop.exe --Task
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  PID:1888

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

8B2B9A00839EED1DFDCCC3BFC2F5DF12

Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\8B2B9A00839EED1DFDCCC3BFC2F5DF12
Size 1KB
SHA256 33a39e9ec2133230533a686ec43760026e014a3828c703707acbc150fe40fd6f
MD5 7fb5fa1534dcf77f2125b2403b30a0ee
SHA1 365d96812a69ac0a4611ea4b70a3f306576cc3ea
SHA512 a9279fd60505a1bfeef6fb07834cad0fd5be02fd405573fc1a5f59b991e9f88f5e81c32fe910f69bdc6585e71f02559895149eaf49c25b8ff955459fd60c0d2e
MD5 SHA1 SHA512

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B46811C17859FFB409CF0E904A4AA8F8

Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\B46811C17859FFB409CF0E904A4AA8F8
Size 436B
SHA256 f157ed17fcaf8837fa82f8b69973848c9b10a02636848f995698212a08f31895
MD5 971c514f84bba0785f80aa1c23edfd79
SHA1 732acea710a87530c6b08ecdf32a110d254a54c8
SHA512 43dc1425d80e170c645a3e3bb56da8c3acd31bd637329e9e37094ac346ac85434df4edcdbefc05ae00aea33a80a88e2af695997a495611217fe6706075a63c58
MD5 SHA1 SHA512

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8B2B9A00839EED1DFDCCC3BFC2F5DF12

Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\8B2B9A00839EED1DFDCCC3BFC2F5DF12
Size 174B
SHA256 5fa83a3660ed915c9edbc8f6b49f3667fab4a0a16118b25760653d8d86a12ec8
MD5 3e306f708c43ab989368e9b4a89b64d3
SHA1 14d625a4a2b9f89e8e14276d4a7bf08aed5a505a
SHA512 275818cdb6df0dcae1b11b270c9cdd72a56e325446b89dfdc3f203f2352a78d3e8a0d7e3d822c9412d21e1e4a54e1f9aca8e07e7a6b43f7b1da437f5c3b9c818
MD5 SHA1 SHA512

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94308059B57B3142E455B38A6EB92015

Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
Size 342B
SHA256 a9e738761a21f1003dd1f5480a675cb4230755e35ae9190be1fb3111ebc76451
MD5 286ef26a8d1d8ff11a5e1e3bfc9d818b
SHA1 9ddf8334ab7014a6ecb4663e4e4e7b84acd36621
SHA512 e4c5c27de5ee779ef875481c48157dedf613fa63383ead4ac3a06a924973eec8a756714b949923354b2b430bb6d34738bbb0022c39def84233cb6f6c28601729
MD5 SHA1 SHA512

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B46811C17859FFB409CF0E904A4AA8F8

Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\B46811C17859FFB409CF0E904A4AA8F8
Size 170B
SHA256 0227b5cf79a96a214c82fe70cc8d37eb77e4d32ba72e56e409961646c239e7da
MD5 5df16b0d8b9b4d14af06c0fc49c635c6
SHA1 2e1c56f9f7443cf6ce3692e220a3ffd83f14f9f4
SHA512 b5d6fb511ac2471582524f93defd2353e5bfeb0992db2cc0c23e928ed58977b2d4fa376fef9dabb526a47eeef69715c31f3f95632bc56b3115ad2a0679587128
MD5 SHA1 SHA512

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Cab46B1.tmp

Path C:\Users\Admin\AppData\Local\Temp\Cab46B1.tmp
Size 70KB
SHA256 b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f
MD5 49aebf8cbd62d92ac215b2923fb1b9f5
SHA1 1723be06719828dda65ad804298d0431f6aff976
SHA512 bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b
SSDEEP 1536:gc257bHnClJ3v5mnAQEBP+bfnW8Ctl8G1G4eu76NWDdB34w18R5cBWcJAm68+Q:gp2ld5jPqW8LgeulxB3fgcEfDQ
MD5 SHA1 SHA512 SSDEEP

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Tar1A84.tmp

Path C:\Users\Admin\AppData\Local\Temp\Tar1A84.tmp
Size 181KB
SHA256 8efbc21559ef8b1bcf526800d8070baad42474ce7198e26fa771dbb41a76b1d8
MD5 4ea6026cf93ec6338144661bf1202cd1
SHA1 a1dec9044f750ad887935a01430bf49322fbdcb7
SHA512 6c7e0980e39aacf4c3689802353f464a08cd17753bd210ee997e5f2a455deb4f287a9ef74d84579dbde49bc96213cd2b8b247723919c412ea980aa6e6bfe218b
SSDEEP 1536:aAZw/J+lCUsTRvsqgCyqWlUDNWdm1wpSru2A0XwjY/z02DTr3rmt6mZ:as2J+qTR0XCy/dmASru2AijbdG
MD5 SHA1 SHA512 SSDEEP

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20240906b44a4cb8600e10c1c9fc218f1af0abdbstop.exe

Path C:\Users\Admin\AppData\Local\ce8722fa-6906-409d-9fad-7e8aadfa351f\20240906b44a4cb8600e10c1c9fc218f1af0abdbstop.exe
Size 1.1MB
SHA256 e5d1067f803ffebbca20c29d6be72c150ffbc23a2ba5c017a68bbd70ba6eb451
MD5 b44a4cb8600e10c1c9fc218f1af0abdb
SHA1 64a3c362ab62d76dc9e589ec0d728592b830c71f
SHA512 8e78aee3d63d461f1fb77f2a9ac2aaa96f967d2f54d7077175007446362c21244a63e17571847c1681538f7c507df71b5e27bea3889c1ce8436f5b1096b5fe8e
SSDEEP 24576:ZBUIKn/vwOXGUXAjCymYZiVtElVIBT2roqnTSSxWeT/dRPOO8bWQHUq7:F0dwAYZt6C31WeTVRPOhb7Uq7
MD5 SHA1 SHA512 SSDEEP

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads