djvu | 1dbc06d0bd544c3b5a1e49a8c416f6a1d29a7a6eda5031894df7bf5f49430656

General

Target

20240906850d0bc37d1f77efa73bb55eba7bfab4stop.exe
Size

1.1MB
MD5

850d0bc37d1f77efa73bb55eba7bfab4
SHA1

69075099a120d7c62f282251b49ae5c9a38a4781
SHA256

1dbc06d0bd544c3b5a1e49a8c416f6a1d29a7a6eda5031894df7bf5f49430656
SHA512

b9f439a742033b0951d5212d48cedcf46b34b903ee05ba7f0ba98c6b4d236d9b74acb953f41e6dda56fd2a4c4e5ac6d15900f9cb9b2620978f6d893f64e4f2b1
SSDEEP

24576:ZBUIKn/vwOXGUXAjCymYZiVtElVIBT2roqnTSSxWeT/dRPOO8GWQHUq7:F0dwAYZt6C31WeTVRPOhG7Uq7

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

C2

http://tbpws.top/fhsgtsspen6/get.php

Attributes

extension
.wiot
offline_id
sZ9rF572Y03XTlUZsBUVlV9YksFOEsyIfGx58yt1
payload_url
http://securebiz.org/dl/build2.exe

http://tbpws.top/files/1/build3.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-CtDpAM1g5f 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: 0333gSd743d

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 1 IoCs

resource	yara_rule
behavioral1/files/0x00080000000164b4-14.dat	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
2820	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-1-5-21-3533259084-2542256011-65585152-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\c8557054-de95-4c72-b31a-21faa61584eb\\20240906850d0bc37d1f77efa73bb55eba7bfab4stop.exe\" --AutoStart"	20240906850d0bc37d1f77efa73bb55eba7bfab4stop.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
4	api.2ip.ua
5	api.2ip.ua
9	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 3 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	20240906850d0bc37d1f77efa73bb55eba7bfab4stop.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	icacls.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	20240906850d0bc37d1f77efa73bb55eba7bfab4stop.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
1968	20240906850d0bc37d1f77efa73bb55eba7bfab4stop.exe
1968	20240906850d0bc37d1f77efa73bb55eba7bfab4stop.exe
2868	20240906850d0bc37d1f77efa73bb55eba7bfab4stop.exe
2868	20240906850d0bc37d1f77efa73bb55eba7bfab4stop.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 1968 wrote to memory of 2820	1968	20240906850d0bc37d1f77efa73bb55eba7bfab4stop.exe	31
PID 1968 wrote to memory of 2820	1968	20240906850d0bc37d1f77efa73bb55eba7bfab4stop.exe	31
PID 1968 wrote to memory of 2820	1968	20240906850d0bc37d1f77efa73bb55eba7bfab4stop.exe	31
PID 1968 wrote to memory of 2820	1968	20240906850d0bc37d1f77efa73bb55eba7bfab4stop.exe	31
PID 1968 wrote to memory of 2868	1968	20240906850d0bc37d1f77efa73bb55eba7bfab4stop.exe	32
PID 1968 wrote to memory of 2868	1968	20240906850d0bc37d1f77efa73bb55eba7bfab4stop.exe	32
PID 1968 wrote to memory of 2868	1968	20240906850d0bc37d1f77efa73bb55eba7bfab4stop.exe	32
PID 1968 wrote to memory of 2868	1968	20240906850d0bc37d1f77efa73bb55eba7bfab4stop.exe	32

C:\Users\Admin\AppData\Local\Temp\20240906850d0bc37d1f77efa73bb55eba7bfab4stop.exe
"C:\Users\Admin\AppData\Local\Temp\20240906850d0bc37d1f77efa73bb55eba7bfab4stop.exe"
1⤵
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:1968
- C:\Windows\SysWOW64\icacls.exe
  icacls "C:\Users\Admin\AppData\Local\c8557054-de95-4c72-b31a-21faa61584eb" /deny *S-1-1-0:(OI)(CI)(DE,DC)
  2⤵
  - Modifies file permissions
  - System Location Discovery: System Language Discovery
  PID:2820
- C:\Users\Admin\AppData\Local\Temp\20240906850d0bc37d1f77efa73bb55eba7bfab4stop.exe
  "C:\Users\Admin\AppData\Local\Temp\20240906850d0bc37d1f77efa73bb55eba7bfab4stop.exe" --Admin IsNotAutoStart IsNotTask
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  PID:2868

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
6d70827d2baeb17d9f71561d479ec327

SHA1
8a51b8a7c589a52ac7c801feb43ea2b570360795

SHA256
7b1f1d29deb18a128d53fd528c59682681202ef34e70d16c4205d0f22882f387

SHA512
80dbaa83dc7a169aa436c169f03dc682fcaecd5cb7f18549e015633c7444f143308c5adcb2b652c2ab5949125afd5d5ea4e625372a9b7f488685e399360f977a

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

Filesize
170B

MD5
b231307c3b9abd4fa022281c9c5031b7

SHA1
b49c0275e58aa9ecc5e7986cd849235ca1a71f16

SHA256
69d293b458f324ceca5b1fe3d03eafef8a660aa651ee4f5360a131c5f1be21af

SHA512
0511be0718354ba72f77ee0ac2d3f2fb0b9394503c65f956d22d51ed84cf29f08c3ff252c2324a7cc5a6ea608bdadf81db8c86903ea4789220eb6dbe797b5cf7

Download Submit
C:\Users\Admin\AppData\Local\Temp\CabB4BF.tmp

Filesize
70KB

MD5
49aebf8cbd62d92ac215b2923fb1b9f5

SHA1
1723be06719828dda65ad804298d0431f6aff976

SHA256
b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

SHA512
bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

Download Submit
C:\Users\Admin\AppData\Local\c8557054-de95-4c72-b31a-21faa61584eb\20240906850d0bc37d1f77efa73bb55eba7bfab4stop.exe

Filesize
1.1MB

MD5
850d0bc37d1f77efa73bb55eba7bfab4

SHA1
69075099a120d7c62f282251b49ae5c9a38a4781

SHA256
1dbc06d0bd544c3b5a1e49a8c416f6a1d29a7a6eda5031894df7bf5f49430656

SHA512
b9f439a742033b0951d5212d48cedcf46b34b903ee05ba7f0ba98c6b4d236d9b74acb953f41e6dda56fd2a4c4e5ac6d15900f9cb9b2620978f6d893f64e4f2b1

Download Submit

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads