djvu | f0689cff028781477fb7e00cb27868980453ee4770b6b20dbf35d1d0e6de66fb

Analysis

max time kernel
145s
max time network
125s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
03-12-2024 23:26

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General

Target

f0689cff028781477fb7e00cb27868980453ee4770b6b20dbf35d1d0e6de66fb.exe
Size

713KB
MD5

e52172154ddb3ba654b6b91fdce8020e
SHA1

68278fec9526ef91c1d06e5a83bced2dc13e178f
SHA256

f0689cff028781477fb7e00cb27868980453ee4770b6b20dbf35d1d0e6de66fb
SHA512

38c9b20cc56468026ebf6088174cd644456ea1acd5dc6a3a9fdbe328b7cb9e2f2c7ecf6ae3d3e798002a4fde3b1bcc61e696ff777071fbdd1efad24c504a6c5c
SSDEEP

12288:QRr71FAmv1eFrc4JTs+OuLO2TB07mBnY4YxsOtnRt+htHI+djNFWMd7m9c0FqpHL:8PAkEFBr1O2uSi4YxsOhH+hRIrMd7I4r

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

http://zexeq.com/test1/get.php

Attributes

extension
.gaze
offline_id
jB2aJtVEWRwbJf76a6OKB8sn0BtTgNlHYUC5wLt1
payload_url
http://colisumy.com/dl/build2.exe

http://zexeq.com/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-sD0OUYo1Pd 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: 0710JOsie

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 17 IoCs

resource	yara_rule
behavioral1/memory/1640-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1640-9-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1640-10-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2348-3-0x0000000000930000-0x0000000000A4B000-memory.dmp	family_djvu
behavioral1/memory/1640-28-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2916-37-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2916-38-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2916-53-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2916-52-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2916-62-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2612-68-0x0000000000400000-0x0000000000730000-memory.dmp	family_djvu
behavioral1/memory/2916-69-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2916-80-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2916-83-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2916-81-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2916-84-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2916-85-0x0000000000400000-0x0000000000537000-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
2980	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-1-5-21-4177215427-74451935-3209572229-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\18845714-4791-4625-9d9d-b9e996bf2238\\f0689cff028781477fb7e00cb27868980453ee4770b6b20dbf35d1d0e6de66fb.exe\" --AutoStart"	f0689cff028781477fb7e00cb27868980453ee4770b6b20dbf35d1d0e6de66fb.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 2348 set thread context of 1640	2348	f0689cff028781477fb7e00cb27868980453ee4770b6b20dbf35d1d0e6de66fb.exe	30
PID 2612 set thread context of 2916	2612	f0689cff028781477fb7e00cb27868980453ee4770b6b20dbf35d1d0e6de66fb.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	icacls.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	f0689cff028781477fb7e00cb27868980453ee4770b6b20dbf35d1d0e6de66fb.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	f0689cff028781477fb7e00cb27868980453ee4770b6b20dbf35d1d0e6de66fb.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	f0689cff028781477fb7e00cb27868980453ee4770b6b20dbf35d1d0e6de66fb.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	f0689cff028781477fb7e00cb27868980453ee4770b6b20dbf35d1d0e6de66fb.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
1640	f0689cff028781477fb7e00cb27868980453ee4770b6b20dbf35d1d0e6de66fb.exe
1640	f0689cff028781477fb7e00cb27868980453ee4770b6b20dbf35d1d0e6de66fb.exe
2916	f0689cff028781477fb7e00cb27868980453ee4770b6b20dbf35d1d0e6de66fb.exe
2916	f0689cff028781477fb7e00cb27868980453ee4770b6b20dbf35d1d0e6de66fb.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2348 wrote to memory of 1640	2348	f0689cff028781477fb7e00cb27868980453ee4770b6b20dbf35d1d0e6de66fb.exe	30
PID 2348 wrote to memory of 1640	2348	f0689cff028781477fb7e00cb27868980453ee4770b6b20dbf35d1d0e6de66fb.exe	30
PID 2348 wrote to memory of 1640	2348	f0689cff028781477fb7e00cb27868980453ee4770b6b20dbf35d1d0e6de66fb.exe	30
PID 2348 wrote to memory of 1640	2348	f0689cff028781477fb7e00cb27868980453ee4770b6b20dbf35d1d0e6de66fb.exe	30
PID 2348 wrote to memory of 1640	2348	f0689cff028781477fb7e00cb27868980453ee4770b6b20dbf35d1d0e6de66fb.exe	30
PID 2348 wrote to memory of 1640	2348	f0689cff028781477fb7e00cb27868980453ee4770b6b20dbf35d1d0e6de66fb.exe	30
PID 2348 wrote to memory of 1640	2348	f0689cff028781477fb7e00cb27868980453ee4770b6b20dbf35d1d0e6de66fb.exe	30
PID 2348 wrote to memory of 1640	2348	f0689cff028781477fb7e00cb27868980453ee4770b6b20dbf35d1d0e6de66fb.exe	30
PID 2348 wrote to memory of 1640	2348	f0689cff028781477fb7e00cb27868980453ee4770b6b20dbf35d1d0e6de66fb.exe	30
PID 2348 wrote to memory of 1640	2348	f0689cff028781477fb7e00cb27868980453ee4770b6b20dbf35d1d0e6de66fb.exe	30
PID 2348 wrote to memory of 1640	2348	f0689cff028781477fb7e00cb27868980453ee4770b6b20dbf35d1d0e6de66fb.exe	30
PID 1640 wrote to memory of 2980	1640	f0689cff028781477fb7e00cb27868980453ee4770b6b20dbf35d1d0e6de66fb.exe	32
PID 1640 wrote to memory of 2980	1640	f0689cff028781477fb7e00cb27868980453ee4770b6b20dbf35d1d0e6de66fb.exe	32
PID 1640 wrote to memory of 2980	1640	f0689cff028781477fb7e00cb27868980453ee4770b6b20dbf35d1d0e6de66fb.exe	32
PID 1640 wrote to memory of 2980	1640	f0689cff028781477fb7e00cb27868980453ee4770b6b20dbf35d1d0e6de66fb.exe	32
PID 1640 wrote to memory of 2612	1640	f0689cff028781477fb7e00cb27868980453ee4770b6b20dbf35d1d0e6de66fb.exe	33
PID 1640 wrote to memory of 2612	1640	f0689cff028781477fb7e00cb27868980453ee4770b6b20dbf35d1d0e6de66fb.exe	33
PID 1640 wrote to memory of 2612	1640	f0689cff028781477fb7e00cb27868980453ee4770b6b20dbf35d1d0e6de66fb.exe	33
PID 1640 wrote to memory of 2612	1640	f0689cff028781477fb7e00cb27868980453ee4770b6b20dbf35d1d0e6de66fb.exe	33
PID 2612 wrote to memory of 2916	2612	f0689cff028781477fb7e00cb27868980453ee4770b6b20dbf35d1d0e6de66fb.exe	34
PID 2612 wrote to memory of 2916	2612	f0689cff028781477fb7e00cb27868980453ee4770b6b20dbf35d1d0e6de66fb.exe	34
PID 2612 wrote to memory of 2916	2612	f0689cff028781477fb7e00cb27868980453ee4770b6b20dbf35d1d0e6de66fb.exe	34
PID 2612 wrote to memory of 2916	2612	f0689cff028781477fb7e00cb27868980453ee4770b6b20dbf35d1d0e6de66fb.exe	34
PID 2612 wrote to memory of 2916	2612	f0689cff028781477fb7e00cb27868980453ee4770b6b20dbf35d1d0e6de66fb.exe	34
PID 2612 wrote to memory of 2916	2612	f0689cff028781477fb7e00cb27868980453ee4770b6b20dbf35d1d0e6de66fb.exe	34
PID 2612 wrote to memory of 2916	2612	f0689cff028781477fb7e00cb27868980453ee4770b6b20dbf35d1d0e6de66fb.exe	34
PID 2612 wrote to memory of 2916	2612	f0689cff028781477fb7e00cb27868980453ee4770b6b20dbf35d1d0e6de66fb.exe	34
PID 2612 wrote to memory of 2916	2612	f0689cff028781477fb7e00cb27868980453ee4770b6b20dbf35d1d0e6de66fb.exe	34
PID 2612 wrote to memory of 2916	2612	f0689cff028781477fb7e00cb27868980453ee4770b6b20dbf35d1d0e6de66fb.exe	34
PID 2612 wrote to memory of 2916	2612	f0689cff028781477fb7e00cb27868980453ee4770b6b20dbf35d1d0e6de66fb.exe	34

C:\Users\Admin\AppData\Local\Temp\f0689cff028781477fb7e00cb27868980453ee4770b6b20dbf35d1d0e6de66fb.exe
"C:\Users\Admin\AppData\Local\Temp\f0689cff028781477fb7e00cb27868980453ee4770b6b20dbf35d1d0e6de66fb.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2348
- C:\Users\Admin\AppData\Local\Temp\f0689cff028781477fb7e00cb27868980453ee4770b6b20dbf35d1d0e6de66fb.exe
  "C:\Users\Admin\AppData\Local\Temp\f0689cff028781477fb7e00cb27868980453ee4770b6b20dbf35d1d0e6de66fb.exe"
  2⤵
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:1640
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\18845714-4791-4625-9d9d-b9e996bf2238" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    - System Location Discovery: System Language Discovery
    PID:2980
- - C:\Users\Admin\AppData\Local\Temp\f0689cff028781477fb7e00cb27868980453ee4770b6b20dbf35d1d0e6de66fb.exe
    "C:\Users\Admin\AppData\Local\Temp\f0689cff028781477fb7e00cb27868980453ee4770b6b20dbf35d1d0e6de66fb.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2612
  - - C:\Users\Admin\AppData\Local\Temp\f0689cff028781477fb7e00cb27868980453ee4770b6b20dbf35d1d0e6de66fb.exe
      "C:\Users\Admin\AppData\Local\Temp\f0689cff028781477fb7e00cb27868980453ee4770b6b20dbf35d1d0e6de66fb.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      PID:2916

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
1884f687b385321d9af56ae460b13ad6

SHA1
b76a6e64439f854d2a86a22af363ae31e0caacfe

SHA256
6db0ad52e1156a335920257a92ec727b7c877eb08f4e3325b3ae4b88daae6f1d

SHA512
9ce9cde8a3455a0565541dc00d9b1e8cff1babcf2b0d80a7d539bafe518539582016886f0699896e6e0c8f8e69dfa343a0db767c1f8a27c61195b1f7050d4826

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

Filesize
170B

MD5
bda015b155fb871c253ad87ee605a4b8

SHA1
725efedd408a8c33572c12a4ee866b50595664b6

SHA256
6982bde6194b606055be2479ee927c64eb91f2ad2eb159717889061778518387

SHA512
61b784b2f9097c1628d859ce5256f7a7951aceec7331d69f2f2db9c78abafac55da8b3346c7553bd3a838015b313bcb4427448113b760bff90981e309ae04145

Download Submit
C:\Users\Admin\AppData\Local\18845714-4791-4625-9d9d-b9e996bf2238\f0689cff028781477fb7e00cb27868980453ee4770b6b20dbf35d1d0e6de66fb.exe

Filesize
713KB

MD5
e52172154ddb3ba654b6b91fdce8020e

SHA1
68278fec9526ef91c1d06e5a83bced2dc13e178f

SHA256
f0689cff028781477fb7e00cb27868980453ee4770b6b20dbf35d1d0e6de66fb

SHA512
38c9b20cc56468026ebf6088174cd644456ea1acd5dc6a3a9fdbe328b7cb9e2f2c7ecf6ae3d3e798002a4fde3b1bcc61e696ff777071fbdd1efad24c504a6c5c

Download Submit
C:\Users\Admin\AppData\Local\5b1007c8-e42e-4203-aff4-6df5470a2dc5\build3.exe

Filesize
437B

MD5
6910426a598bc0b07dd6ca7c2faf5c22

SHA1
4304d65a08652b167453997e1464cc6ef034be23

SHA256
ebfef207462c29030b8a06068c8cbf1cfeae1304813b9cdbfa2d705b314bf692

SHA512
5e96757fa5daa336968aa07d5fe5525040a081a547dd6bad55bed4539ad76b3f96aabd38f461efdafa4a427963b2a3187cc40dfa60c74e6c6ddf738176381952

Download Submit
C:\Users\Admin\AppData\Local\Temp\CabB403.tmp

Filesize
70KB

MD5
49aebf8cbd62d92ac215b2923fb1b9f5

SHA1
1723be06719828dda65ad804298d0431f6aff976

SHA256
b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

SHA512
bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

Download Submit
C:\Users\Admin\AppData\Local\bowsakkdestx.txt

Filesize
449B

MD5
caa078f0348cda98328127c142e3bfed

SHA1
e38274d642c806a3affcca8f7e37b61f591c47e6

SHA256
91faeb982f34313750a83d74c5464abe4e01357d1a7ea4253973509bc0e9d219

SHA512
2e6a5c482b5226079c6b4bd9a706537c372a3b43962f64be6bdd281e3217f963316ef0eba38164890bdf14af6558eb26605320487f0a0c841be9bb813c2ee5d6

Download Submit
memory/1640-9-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1640-4-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/1640-28-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1640-10-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1640-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2348-2-0x0000000000330000-0x00000000003C2000-memory.dmp

Filesize
584KB

Download
memory/2348-8-0x0000000000330000-0x00000000003C2000-memory.dmp

Filesize
584KB

Download
memory/2348-1-0x0000000000330000-0x00000000003C2000-memory.dmp

Filesize
584KB

Download
memory/2348-3-0x0000000000930000-0x0000000000A4B000-memory.dmp

Filesize
1.1MB

Download
memory/2348-0-0x0000000000400000-0x0000000000730000-memory.dmp

Filesize
3.2MB

Download
memory/2612-31-0x0000000000330000-0x00000000003C2000-memory.dmp

Filesize
584KB

Download
memory/2612-68-0x0000000000400000-0x0000000000730000-memory.dmp

Filesize
3.2MB

Download
memory/2612-35-0x0000000000400000-0x0000000000730000-memory.dmp

Filesize
3.2MB

Download
memory/2916-52-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2916-53-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2916-62-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2916-37-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2916-69-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2916-38-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2916-80-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2916-83-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2916-81-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2916-84-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2916-85-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download