djvu | 451d380bb89f747dfcb24e342766037643e38f0dfea566099f2361af51a555ad

Analysis

max time kernel
148s
max time network
120s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
28-12-2024 23:10

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General

Target

bd1789026d6010f1849075e14a07f168349ac7e9bbe154358a0e96f0435e8d9a.exe
Size

793KB
MD5

9fcdf0cfe8478a37bcf45a7ccd97da47
SHA1

d164d00b0692b68574f12acde245f5e501b69628
SHA256

bd1789026d6010f1849075e14a07f168349ac7e9bbe154358a0e96f0435e8d9a
SHA512

9ed1ca3375634baa8f91700d4d6388423d61ad4cc274caca8a6a83d01051a54a1dae501534fb40eebca48b57511095eb5b95c5dfce90ea5ccfc248b6c85837b3
SSDEEP

12288:VxyQdjSLkWghFdms3TVGJbkwPnxZJKQTZyeFxIlKPHy9XuKaw6qypd+sSuRMH:VIwSWFdmsjOPn8yZ8mHeu4u8sSuc

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/2292-2-0x0000000001D90000-0x0000000001EAB000-memory.dmp	family_djvu
behavioral1/memory/2284-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2284-8-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2284-9-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2284-27-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2644-35-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2644-36-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2644-48-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2644-49-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2644-50-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2644-58-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2644-64-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2644-61-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2644-63-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2644-65-0x0000000000400000-0x0000000000537000-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
2896	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-1-5-21-2872745919-2748461613-2989606286-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\c10b6367-d2e5-4755-9b9d-a6fb576fb6db\\bd1789026d6010f1849075e14a07f168349ac7e9bbe154358a0e96f0435e8d9a.exe\" --AutoStart"	bd1789026d6010f1849075e14a07f168349ac7e9bbe154358a0e96f0435e8d9a.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

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 2292 set thread context of 2284	2292	bd1789026d6010f1849075e14a07f168349ac7e9bbe154358a0e96f0435e8d9a.exe	30
PID 2968 set thread context of 2644	2968	bd1789026d6010f1849075e14a07f168349ac7e9bbe154358a0e96f0435e8d9a.exe	35

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	bd1789026d6010f1849075e14a07f168349ac7e9bbe154358a0e96f0435e8d9a.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	icacls.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	bd1789026d6010f1849075e14a07f168349ac7e9bbe154358a0e96f0435e8d9a.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	bd1789026d6010f1849075e14a07f168349ac7e9bbe154358a0e96f0435e8d9a.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	bd1789026d6010f1849075e14a07f168349ac7e9bbe154358a0e96f0435e8d9a.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2284	bd1789026d6010f1849075e14a07f168349ac7e9bbe154358a0e96f0435e8d9a.exe
2284	bd1789026d6010f1849075e14a07f168349ac7e9bbe154358a0e96f0435e8d9a.exe
2644	bd1789026d6010f1849075e14a07f168349ac7e9bbe154358a0e96f0435e8d9a.exe
2644	bd1789026d6010f1849075e14a07f168349ac7e9bbe154358a0e96f0435e8d9a.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2292 wrote to memory of 2284	2292	bd1789026d6010f1849075e14a07f168349ac7e9bbe154358a0e96f0435e8d9a.exe	30
PID 2292 wrote to memory of 2284	2292	bd1789026d6010f1849075e14a07f168349ac7e9bbe154358a0e96f0435e8d9a.exe	30
PID 2292 wrote to memory of 2284	2292	bd1789026d6010f1849075e14a07f168349ac7e9bbe154358a0e96f0435e8d9a.exe	30
PID 2292 wrote to memory of 2284	2292	bd1789026d6010f1849075e14a07f168349ac7e9bbe154358a0e96f0435e8d9a.exe	30
PID 2292 wrote to memory of 2284	2292	bd1789026d6010f1849075e14a07f168349ac7e9bbe154358a0e96f0435e8d9a.exe	30
PID 2292 wrote to memory of 2284	2292	bd1789026d6010f1849075e14a07f168349ac7e9bbe154358a0e96f0435e8d9a.exe	30
PID 2292 wrote to memory of 2284	2292	bd1789026d6010f1849075e14a07f168349ac7e9bbe154358a0e96f0435e8d9a.exe	30
PID 2292 wrote to memory of 2284	2292	bd1789026d6010f1849075e14a07f168349ac7e9bbe154358a0e96f0435e8d9a.exe	30
PID 2292 wrote to memory of 2284	2292	bd1789026d6010f1849075e14a07f168349ac7e9bbe154358a0e96f0435e8d9a.exe	30
PID 2292 wrote to memory of 2284	2292	bd1789026d6010f1849075e14a07f168349ac7e9bbe154358a0e96f0435e8d9a.exe	30
PID 2292 wrote to memory of 2284	2292	bd1789026d6010f1849075e14a07f168349ac7e9bbe154358a0e96f0435e8d9a.exe	30
PID 2284 wrote to memory of 2896	2284	bd1789026d6010f1849075e14a07f168349ac7e9bbe154358a0e96f0435e8d9a.exe	33
PID 2284 wrote to memory of 2896	2284	bd1789026d6010f1849075e14a07f168349ac7e9bbe154358a0e96f0435e8d9a.exe	33
PID 2284 wrote to memory of 2896	2284	bd1789026d6010f1849075e14a07f168349ac7e9bbe154358a0e96f0435e8d9a.exe	33
PID 2284 wrote to memory of 2896	2284	bd1789026d6010f1849075e14a07f168349ac7e9bbe154358a0e96f0435e8d9a.exe	33
PID 2284 wrote to memory of 2968	2284	bd1789026d6010f1849075e14a07f168349ac7e9bbe154358a0e96f0435e8d9a.exe	34
PID 2284 wrote to memory of 2968	2284	bd1789026d6010f1849075e14a07f168349ac7e9bbe154358a0e96f0435e8d9a.exe	34
PID 2284 wrote to memory of 2968	2284	bd1789026d6010f1849075e14a07f168349ac7e9bbe154358a0e96f0435e8d9a.exe	34
PID 2284 wrote to memory of 2968	2284	bd1789026d6010f1849075e14a07f168349ac7e9bbe154358a0e96f0435e8d9a.exe	34
PID 2968 wrote to memory of 2644	2968	bd1789026d6010f1849075e14a07f168349ac7e9bbe154358a0e96f0435e8d9a.exe	35
PID 2968 wrote to memory of 2644	2968	bd1789026d6010f1849075e14a07f168349ac7e9bbe154358a0e96f0435e8d9a.exe	35
PID 2968 wrote to memory of 2644	2968	bd1789026d6010f1849075e14a07f168349ac7e9bbe154358a0e96f0435e8d9a.exe	35
PID 2968 wrote to memory of 2644	2968	bd1789026d6010f1849075e14a07f168349ac7e9bbe154358a0e96f0435e8d9a.exe	35
PID 2968 wrote to memory of 2644	2968	bd1789026d6010f1849075e14a07f168349ac7e9bbe154358a0e96f0435e8d9a.exe	35
PID 2968 wrote to memory of 2644	2968	bd1789026d6010f1849075e14a07f168349ac7e9bbe154358a0e96f0435e8d9a.exe	35
PID 2968 wrote to memory of 2644	2968	bd1789026d6010f1849075e14a07f168349ac7e9bbe154358a0e96f0435e8d9a.exe	35
PID 2968 wrote to memory of 2644	2968	bd1789026d6010f1849075e14a07f168349ac7e9bbe154358a0e96f0435e8d9a.exe	35
PID 2968 wrote to memory of 2644	2968	bd1789026d6010f1849075e14a07f168349ac7e9bbe154358a0e96f0435e8d9a.exe	35
PID 2968 wrote to memory of 2644	2968	bd1789026d6010f1849075e14a07f168349ac7e9bbe154358a0e96f0435e8d9a.exe	35
PID 2968 wrote to memory of 2644	2968	bd1789026d6010f1849075e14a07f168349ac7e9bbe154358a0e96f0435e8d9a.exe	35

C:\Users\Admin\AppData\Local\Temp\bd1789026d6010f1849075e14a07f168349ac7e9bbe154358a0e96f0435e8d9a.exe
"C:\Users\Admin\AppData\Local\Temp\bd1789026d6010f1849075e14a07f168349ac7e9bbe154358a0e96f0435e8d9a.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2292
- C:\Users\Admin\AppData\Local\Temp\bd1789026d6010f1849075e14a07f168349ac7e9bbe154358a0e96f0435e8d9a.exe
  "C:\Users\Admin\AppData\Local\Temp\bd1789026d6010f1849075e14a07f168349ac7e9bbe154358a0e96f0435e8d9a.exe"
  2⤵
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:2284
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\c10b6367-d2e5-4755-9b9d-a6fb576fb6db" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    - System Location Discovery: System Language Discovery
    PID:2896
- - C:\Users\Admin\AppData\Local\Temp\bd1789026d6010f1849075e14a07f168349ac7e9bbe154358a0e96f0435e8d9a.exe
    "C:\Users\Admin\AppData\Local\Temp\bd1789026d6010f1849075e14a07f168349ac7e9bbe154358a0e96f0435e8d9a.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2968
  - - C:\Users\Admin\AppData\Local\Temp\bd1789026d6010f1849075e14a07f168349ac7e9bbe154358a0e96f0435e8d9a.exe
      "C:\Users\Admin\AppData\Local\Temp\bd1789026d6010f1849075e14a07f168349ac7e9bbe154358a0e96f0435e8d9a.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      PID:2644

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
5d8f21f42d3af8ca31f8b9dbfe7c53f8

SHA1
867237d66433d1de5e6e0aa59a3246fd207292a2

SHA256
0da45c04325a33458cb11be555eb7ae5d9c8b0f5f5e6070c91d9e9d61b3a6a85

SHA512
51a5bd608c83a9420de6c82498d9e060443f5aeeccfc2de22327459fd2822840800eaa28468304d2bcb68306d6d42664ad371e54fecb0d6a3407d1c984624523

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

Filesize
170B

MD5
c49c26ca9001c6fd6f9b8b9eda5ddb89

SHA1
cd9ca9db44b13cabbfd19a3e28e95c74f4454139

SHA256
f8f3d3a0b9b94db073a703d8c5b0f8a8d5cdbdedd73aceb328ea07ca1841a6a9

SHA512
4d8dbc9855ceebceee7b7936101e830366e48b4dc9f9ef42ef4d6aa40d96dd9c3f66c788cbbd1ecaa7c4f1c86738f8033c21fddc00ea0c47ef0f36521e0588b5

Download Submit
C:\Users\Admin\AppData\Local\Temp\CabD8D2.tmp

Filesize
70KB

MD5
49aebf8cbd62d92ac215b2923fb1b9f5

SHA1
1723be06719828dda65ad804298d0431f6aff976

SHA256
b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

SHA512
bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

Download Submit
C:\Users\Admin\AppData\Local\c10b6367-d2e5-4755-9b9d-a6fb576fb6db\bd1789026d6010f1849075e14a07f168349ac7e9bbe154358a0e96f0435e8d9a.exe

Filesize
793KB

MD5
9fcdf0cfe8478a37bcf45a7ccd97da47

SHA1
d164d00b0692b68574f12acde245f5e501b69628

SHA256
bd1789026d6010f1849075e14a07f168349ac7e9bbe154358a0e96f0435e8d9a

SHA512
9ed1ca3375634baa8f91700d4d6388423d61ad4cc274caca8a6a83d01051a54a1dae501534fb40eebca48b57511095eb5b95c5dfce90ea5ccfc248b6c85837b3

Download Submit
memory/2284-8-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2284-9-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2284-27-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2284-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2284-3-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2292-6-0x0000000000580000-0x0000000000612000-memory.dmp

Filesize
584KB

Download
memory/2292-2-0x0000000001D90000-0x0000000001EAB000-memory.dmp

Filesize
1.1MB

Download
memory/2292-1-0x0000000000580000-0x0000000000612000-memory.dmp

Filesize
584KB

Download
memory/2292-0-0x0000000000580000-0x0000000000612000-memory.dmp

Filesize
584KB

Download
memory/2644-36-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2644-35-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2644-48-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2644-49-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2644-50-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2644-58-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2644-64-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2644-61-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2644-63-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2644-65-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2968-34-0x0000000000400000-0x000000000050B000-memory.dmp

Filesize
1.0MB

Download
memory/2968-29-0x0000000000400000-0x000000000050B000-memory.dmp

Filesize
1.0MB

Download
memory/2968-28-0x0000000000320000-0x00000000003B2000-memory.dmp

Filesize
584KB

Download