djvu | 54ae5f8e7f48ef0add9403ced9dbed4419f642e474278dc215cdd140077c1545

Analysis

max time kernel
147s
max time network
126s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
29/12/2024, 00:22

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General

Target

28ab91ea2d0e18a098cf8d26e786a7a477a98d6b0a6dcc1ec9e6e54395534b5d.exe
Size

793KB
MD5

bb3a78f059d635fa48ffc3d7b5ee4a55
SHA1

3ee29a432ab0d44404429e33d4380f5ee940c2a1
SHA256

28ab91ea2d0e18a098cf8d26e786a7a477a98d6b0a6dcc1ec9e6e54395534b5d
SHA512

2b9d2e359e6a8e7e7aa35593fabe7be4d4ab186ac214dd4e9a677b33856aec39c71340bfb6dcbfe6f5beacd251d1baa0b29e41706b75fd86dde50063fe649229
SSDEEP

12288:RM3xe1DtJUb9qNY4U4+em5Dn4MKC3tzmYroG+jhssJUzS0uL0pR6NubkVGgmto1:R0QDTQ0ixeMbtzmYMhN2zkgpR6hGg7

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

http://fuyt.org/test1/get.php

Attributes

extension
.udla
offline_id
qwVQoIsE2xLety0oNWloOilSDuIBXJGK86LM3ot1
payload_url
http://zerit.top/dl/build2.exe

http://fuyt.org/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-fnn5kv33Vv 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: 0435JIjdm

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 15 IoCs

resource	yara_rule
behavioral1/memory/2180-2-0x00000000006A0000-0x00000000007BB000-memory.dmp	family_djvu
behavioral1/memory/804-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/804-8-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/804-9-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/804-25-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2988-34-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2988-35-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2988-47-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2988-48-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2988-49-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2988-57-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2988-60-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2988-63-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2988-62-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2988-64-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu

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

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
2224	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-1-5-21-1846800975-3917212583-2893086201-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\7731311b-55f5-4f27-a79e-5f9a8e84eb80\\28ab91ea2d0e18a098cf8d26e786a7a477a98d6b0a6dcc1ec9e6e54395534b5d.exe\" --AutoStart"	28ab91ea2d0e18a098cf8d26e786a7a477a98d6b0a6dcc1ec9e6e54395534b5d.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 2180 set thread context of 804	2180	28ab91ea2d0e18a098cf8d26e786a7a477a98d6b0a6dcc1ec9e6e54395534b5d.exe	30
PID 2108 set thread context of 2988	2108	28ab91ea2d0e18a098cf8d26e786a7a477a98d6b0a6dcc1ec9e6e54395534b5d.exe	34

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	28ab91ea2d0e18a098cf8d26e786a7a477a98d6b0a6dcc1ec9e6e54395534b5d.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	28ab91ea2d0e18a098cf8d26e786a7a477a98d6b0a6dcc1ec9e6e54395534b5d.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	28ab91ea2d0e18a098cf8d26e786a7a477a98d6b0a6dcc1ec9e6e54395534b5d.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	28ab91ea2d0e18a098cf8d26e786a7a477a98d6b0a6dcc1ec9e6e54395534b5d.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	icacls.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
804	28ab91ea2d0e18a098cf8d26e786a7a477a98d6b0a6dcc1ec9e6e54395534b5d.exe
804	28ab91ea2d0e18a098cf8d26e786a7a477a98d6b0a6dcc1ec9e6e54395534b5d.exe
2988	28ab91ea2d0e18a098cf8d26e786a7a477a98d6b0a6dcc1ec9e6e54395534b5d.exe
2988	28ab91ea2d0e18a098cf8d26e786a7a477a98d6b0a6dcc1ec9e6e54395534b5d.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2180 wrote to memory of 804	2180	28ab91ea2d0e18a098cf8d26e786a7a477a98d6b0a6dcc1ec9e6e54395534b5d.exe	30
PID 2180 wrote to memory of 804	2180	28ab91ea2d0e18a098cf8d26e786a7a477a98d6b0a6dcc1ec9e6e54395534b5d.exe	30
PID 2180 wrote to memory of 804	2180	28ab91ea2d0e18a098cf8d26e786a7a477a98d6b0a6dcc1ec9e6e54395534b5d.exe	30
PID 2180 wrote to memory of 804	2180	28ab91ea2d0e18a098cf8d26e786a7a477a98d6b0a6dcc1ec9e6e54395534b5d.exe	30
PID 2180 wrote to memory of 804	2180	28ab91ea2d0e18a098cf8d26e786a7a477a98d6b0a6dcc1ec9e6e54395534b5d.exe	30
PID 2180 wrote to memory of 804	2180	28ab91ea2d0e18a098cf8d26e786a7a477a98d6b0a6dcc1ec9e6e54395534b5d.exe	30
PID 2180 wrote to memory of 804	2180	28ab91ea2d0e18a098cf8d26e786a7a477a98d6b0a6dcc1ec9e6e54395534b5d.exe	30
PID 2180 wrote to memory of 804	2180	28ab91ea2d0e18a098cf8d26e786a7a477a98d6b0a6dcc1ec9e6e54395534b5d.exe	30
PID 2180 wrote to memory of 804	2180	28ab91ea2d0e18a098cf8d26e786a7a477a98d6b0a6dcc1ec9e6e54395534b5d.exe	30
PID 2180 wrote to memory of 804	2180	28ab91ea2d0e18a098cf8d26e786a7a477a98d6b0a6dcc1ec9e6e54395534b5d.exe	30
PID 2180 wrote to memory of 804	2180	28ab91ea2d0e18a098cf8d26e786a7a477a98d6b0a6dcc1ec9e6e54395534b5d.exe	30
PID 804 wrote to memory of 2224	804	28ab91ea2d0e18a098cf8d26e786a7a477a98d6b0a6dcc1ec9e6e54395534b5d.exe	32
PID 804 wrote to memory of 2224	804	28ab91ea2d0e18a098cf8d26e786a7a477a98d6b0a6dcc1ec9e6e54395534b5d.exe	32
PID 804 wrote to memory of 2224	804	28ab91ea2d0e18a098cf8d26e786a7a477a98d6b0a6dcc1ec9e6e54395534b5d.exe	32
PID 804 wrote to memory of 2224	804	28ab91ea2d0e18a098cf8d26e786a7a477a98d6b0a6dcc1ec9e6e54395534b5d.exe	32
PID 804 wrote to memory of 2108	804	28ab91ea2d0e18a098cf8d26e786a7a477a98d6b0a6dcc1ec9e6e54395534b5d.exe	33
PID 804 wrote to memory of 2108	804	28ab91ea2d0e18a098cf8d26e786a7a477a98d6b0a6dcc1ec9e6e54395534b5d.exe	33
PID 804 wrote to memory of 2108	804	28ab91ea2d0e18a098cf8d26e786a7a477a98d6b0a6dcc1ec9e6e54395534b5d.exe	33
PID 804 wrote to memory of 2108	804	28ab91ea2d0e18a098cf8d26e786a7a477a98d6b0a6dcc1ec9e6e54395534b5d.exe	33
PID 2108 wrote to memory of 2988	2108	28ab91ea2d0e18a098cf8d26e786a7a477a98d6b0a6dcc1ec9e6e54395534b5d.exe	34
PID 2108 wrote to memory of 2988	2108	28ab91ea2d0e18a098cf8d26e786a7a477a98d6b0a6dcc1ec9e6e54395534b5d.exe	34
PID 2108 wrote to memory of 2988	2108	28ab91ea2d0e18a098cf8d26e786a7a477a98d6b0a6dcc1ec9e6e54395534b5d.exe	34
PID 2108 wrote to memory of 2988	2108	28ab91ea2d0e18a098cf8d26e786a7a477a98d6b0a6dcc1ec9e6e54395534b5d.exe	34
PID 2108 wrote to memory of 2988	2108	28ab91ea2d0e18a098cf8d26e786a7a477a98d6b0a6dcc1ec9e6e54395534b5d.exe	34
PID 2108 wrote to memory of 2988	2108	28ab91ea2d0e18a098cf8d26e786a7a477a98d6b0a6dcc1ec9e6e54395534b5d.exe	34
PID 2108 wrote to memory of 2988	2108	28ab91ea2d0e18a098cf8d26e786a7a477a98d6b0a6dcc1ec9e6e54395534b5d.exe	34
PID 2108 wrote to memory of 2988	2108	28ab91ea2d0e18a098cf8d26e786a7a477a98d6b0a6dcc1ec9e6e54395534b5d.exe	34
PID 2108 wrote to memory of 2988	2108	28ab91ea2d0e18a098cf8d26e786a7a477a98d6b0a6dcc1ec9e6e54395534b5d.exe	34
PID 2108 wrote to memory of 2988	2108	28ab91ea2d0e18a098cf8d26e786a7a477a98d6b0a6dcc1ec9e6e54395534b5d.exe	34
PID 2108 wrote to memory of 2988	2108	28ab91ea2d0e18a098cf8d26e786a7a477a98d6b0a6dcc1ec9e6e54395534b5d.exe	34

C:\Users\Admin\AppData\Local\Temp\28ab91ea2d0e18a098cf8d26e786a7a477a98d6b0a6dcc1ec9e6e54395534b5d.exe
"C:\Users\Admin\AppData\Local\Temp\28ab91ea2d0e18a098cf8d26e786a7a477a98d6b0a6dcc1ec9e6e54395534b5d.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2180
- C:\Users\Admin\AppData\Local\Temp\28ab91ea2d0e18a098cf8d26e786a7a477a98d6b0a6dcc1ec9e6e54395534b5d.exe
  "C:\Users\Admin\AppData\Local\Temp\28ab91ea2d0e18a098cf8d26e786a7a477a98d6b0a6dcc1ec9e6e54395534b5d.exe"
  2⤵
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:804
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\7731311b-55f5-4f27-a79e-5f9a8e84eb80" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    - System Location Discovery: System Language Discovery
    PID:2224
- - C:\Users\Admin\AppData\Local\Temp\28ab91ea2d0e18a098cf8d26e786a7a477a98d6b0a6dcc1ec9e6e54395534b5d.exe
    "C:\Users\Admin\AppData\Local\Temp\28ab91ea2d0e18a098cf8d26e786a7a477a98d6b0a6dcc1ec9e6e54395534b5d.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2108
  - - C:\Users\Admin\AppData\Local\Temp\28ab91ea2d0e18a098cf8d26e786a7a477a98d6b0a6dcc1ec9e6e54395534b5d.exe
      "C:\Users\Admin\AppData\Local\Temp\28ab91ea2d0e18a098cf8d26e786a7a477a98d6b0a6dcc1ec9e6e54395534b5d.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      PID:2988

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
67e486b2f148a3fca863728242b6273e

SHA1
452a84c183d7ea5b7c015b597e94af8eef66d44a

SHA256
facaf1c3a4bf232abce19a2d534e495b0d3adc7dbe3797d336249aa6f70adcfb

SHA512
d3a37da3bb10a9736dc03e8b2b49baceef5d73c026e2077b8ebc1b786f2c9b2f807e0aa13a5866cf3b3cafd2bc506242ef139c423eaffb050bbb87773e53881e

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
7f3899c7e9fa9c0a2ce136d716aa83a2

SHA1
7e523f05167052c8fa3f8efec58ce86491c4e6a2

SHA256
ec4fd3486b1ed988a64c9faaa5cc2a6bd78ba591b1518e8a73aa0e8e1719a2e8

SHA512
87bb75822eab4677c1c8e49b4199513288e34c5016c4d310e7125f1d265201748ab832a00fa89ff34c575642d709a3d86de7aa10b4777fde03532c6026b89102

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

Filesize
170B

MD5
5af396b010015c78b3998b09c55dd177

SHA1
3384826c8bd8a66d57bb2712480f39989d18919d

SHA256
cf12461d72aa118e933e18875e422b171756aaf93c4dd3fbd58494edd1cf9b2f

SHA512
7906d3c9174b0099854307173211c3e79e4dc1972440fabc9c340fb92f5aad13c1807cdb6b601949d5cfa0634677b85e0f0a768b3787ce1fddfb86e42bc4cf0b

Download Submit
C:\Users\Admin\AppData\Local\7731311b-55f5-4f27-a79e-5f9a8e84eb80\28ab91ea2d0e18a098cf8d26e786a7a477a98d6b0a6dcc1ec9e6e54395534b5d.exe

Filesize
793KB

MD5
bb3a78f059d635fa48ffc3d7b5ee4a55

SHA1
3ee29a432ab0d44404429e33d4380f5ee940c2a1

SHA256
28ab91ea2d0e18a098cf8d26e786a7a477a98d6b0a6dcc1ec9e6e54395534b5d

SHA512
2b9d2e359e6a8e7e7aa35593fabe7be4d4ab186ac214dd4e9a677b33856aec39c71340bfb6dcbfe6f5beacd251d1baa0b29e41706b75fd86dde50063fe649229

Download Submit
C:\Users\Admin\AppData\Local\Temp\CabCB3B.tmp

Filesize
70KB

MD5
49aebf8cbd62d92ac215b2923fb1b9f5

SHA1
1723be06719828dda65ad804298d0431f6aff976

SHA256
b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

SHA512
bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

Download Submit
memory/804-3-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/804-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/804-8-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/804-9-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/804-25-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2108-32-0x0000000000400000-0x000000000050B000-memory.dmp

Filesize
1.0MB

Download
memory/2108-28-0x0000000000400000-0x000000000050B000-memory.dmp

Filesize
1.0MB

Download
memory/2108-27-0x0000000000260000-0x00000000002F1000-memory.dmp

Filesize
580KB

Download
memory/2180-0-0x00000000002C0000-0x0000000000351000-memory.dmp

Filesize
580KB

Download
memory/2180-6-0x00000000002C0000-0x0000000000351000-memory.dmp

Filesize
580KB

Download
memory/2180-2-0x00000000006A0000-0x00000000007BB000-memory.dmp

Filesize
1.1MB

Download
memory/2180-1-0x00000000002C0000-0x0000000000351000-memory.dmp

Filesize
580KB

Download
memory/2988-35-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2988-34-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2988-47-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2988-48-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2988-49-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2988-57-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2988-60-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2988-63-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2988-62-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2988-64-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download