djvu | 0eb97933b944dda15d90b7dd71fb707b994b5be58549d5663aae174a82238268

Analysis

max time kernel
146s
max time network
146s
platform
windows10-2004_x64
resource
win10v2004-20230220-en
resource tags

arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
submitted
18/05/2023, 13:41

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General

Target

0eb97933b944dda15d90b7dd71fb707b994b5be58549d5663aae174a82238268.exe
Size

768KB
MD5

5a8e2f2bdcc6be8d189e1badb8717ca0
SHA1

08d6fbe62d6bfbff71e9cb54d04bd995de47ea0d
SHA256

0eb97933b944dda15d90b7dd71fb707b994b5be58549d5663aae174a82238268
SHA512

a58c08f137bc73030de0105e67b8a42674b8e81f61cbd628fd636b789489ff55a27c5040fd92fce9c20e7eb29c61799ede1982e23e5a8a08b07d7bf6a555a7b5
SSDEEP

12288:iutQbkoDNdGIYqQ0T+RdE6unP25On9VBeyAreL1Yxc/+xTsfPnQaqdlYMZGHCYeF:iuCAoLMqQJRunP25WOyHLwi+xTGWdJ2E

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

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

Attributes

extension
.xash
offline_id
uK3VnHYy6oibGbO8t2PDOMcT40gQoh5oUUCe2Lt1
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-otP8Wlz4eh 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: 0707JOsie

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 17 IoCs

resource	yara_rule
behavioral2/memory/3372-134-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1740-135-0x0000000002780000-0x000000000289B000-memory.dmp	family_djvu
behavioral2/memory/3372-136-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3372-137-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3372-138-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3372-144-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3712-147-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3712-148-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3712-149-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3712-152-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3712-153-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3712-157-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3712-159-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3712-160-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3712-161-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3712-162-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3712-179-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu

Djvu Ransomware
Ransomware which is a variant of the STOP family.
ransomware djvu
Downloads MZ/PE file

Checks computer location settings 2 TTPs 2 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-1529757233-3489015626-3409890339-1000\Control Panel\International\Geo\Nation	0eb97933b944dda15d90b7dd71fb707b994b5be58549d5663aae174a82238268.exe
Key value queried	\REGISTRY\USER\S-1-5-21-1529757233-3489015626-3409890339-1000\Control Panel\International\Geo\Nation	0eb97933b944dda15d90b7dd71fb707b994b5be58549d5663aae174a82238268.exe

Executes dropped EXE 1 IoCs

pid	Process
1324	build3.exe

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
4504	icacls.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-1529757233-3489015626-3409890339-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\7ca517ef-12c7-47a9-ac36-27128e9b17d8\\0eb97933b944dda15d90b7dd71fb707b994b5be58549d5663aae174a82238268.exe\" --AutoStart"	0eb97933b944dda15d90b7dd71fb707b994b5be58549d5663aae174a82238268.exe

Looks up external IP address via web service 1 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
5	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 1740 set thread context of 3372	1740	0eb97933b944dda15d90b7dd71fb707b994b5be58549d5663aae174a82238268.exe	83
PID 1220 set thread context of 3712	1220	0eb97933b944dda15d90b7dd71fb707b994b5be58549d5663aae174a82238268.exe	87

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Creates scheduled task(s) 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence

Scheduled Task

T1053

pid	Process
3304	schtasks.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
3372	0eb97933b944dda15d90b7dd71fb707b994b5be58549d5663aae174a82238268.exe
3372	0eb97933b944dda15d90b7dd71fb707b994b5be58549d5663aae174a82238268.exe
3712	0eb97933b944dda15d90b7dd71fb707b994b5be58549d5663aae174a82238268.exe
3712	0eb97933b944dda15d90b7dd71fb707b994b5be58549d5663aae174a82238268.exe

Suspicious use of WriteProcessMemory 32 IoCs

description	pid	Process	procid_target
PID 1740 wrote to memory of 3372	1740	0eb97933b944dda15d90b7dd71fb707b994b5be58549d5663aae174a82238268.exe	83
PID 1740 wrote to memory of 3372	1740	0eb97933b944dda15d90b7dd71fb707b994b5be58549d5663aae174a82238268.exe	83
PID 1740 wrote to memory of 3372	1740	0eb97933b944dda15d90b7dd71fb707b994b5be58549d5663aae174a82238268.exe	83
PID 1740 wrote to memory of 3372	1740	0eb97933b944dda15d90b7dd71fb707b994b5be58549d5663aae174a82238268.exe	83
PID 1740 wrote to memory of 3372	1740	0eb97933b944dda15d90b7dd71fb707b994b5be58549d5663aae174a82238268.exe	83
PID 1740 wrote to memory of 3372	1740	0eb97933b944dda15d90b7dd71fb707b994b5be58549d5663aae174a82238268.exe	83
PID 1740 wrote to memory of 3372	1740	0eb97933b944dda15d90b7dd71fb707b994b5be58549d5663aae174a82238268.exe	83
PID 1740 wrote to memory of 3372	1740	0eb97933b944dda15d90b7dd71fb707b994b5be58549d5663aae174a82238268.exe	83
PID 1740 wrote to memory of 3372	1740	0eb97933b944dda15d90b7dd71fb707b994b5be58549d5663aae174a82238268.exe	83
PID 1740 wrote to memory of 3372	1740	0eb97933b944dda15d90b7dd71fb707b994b5be58549d5663aae174a82238268.exe	83
PID 3372 wrote to memory of 4504	3372	0eb97933b944dda15d90b7dd71fb707b994b5be58549d5663aae174a82238268.exe	84
PID 3372 wrote to memory of 4504	3372	0eb97933b944dda15d90b7dd71fb707b994b5be58549d5663aae174a82238268.exe	84
PID 3372 wrote to memory of 4504	3372	0eb97933b944dda15d90b7dd71fb707b994b5be58549d5663aae174a82238268.exe	84
PID 3372 wrote to memory of 1220	3372	0eb97933b944dda15d90b7dd71fb707b994b5be58549d5663aae174a82238268.exe	85
PID 3372 wrote to memory of 1220	3372	0eb97933b944dda15d90b7dd71fb707b994b5be58549d5663aae174a82238268.exe	85
PID 3372 wrote to memory of 1220	3372	0eb97933b944dda15d90b7dd71fb707b994b5be58549d5663aae174a82238268.exe	85
PID 1220 wrote to memory of 3712	1220	0eb97933b944dda15d90b7dd71fb707b994b5be58549d5663aae174a82238268.exe	87
PID 1220 wrote to memory of 3712	1220	0eb97933b944dda15d90b7dd71fb707b994b5be58549d5663aae174a82238268.exe	87
PID 1220 wrote to memory of 3712	1220	0eb97933b944dda15d90b7dd71fb707b994b5be58549d5663aae174a82238268.exe	87
PID 1220 wrote to memory of 3712	1220	0eb97933b944dda15d90b7dd71fb707b994b5be58549d5663aae174a82238268.exe	87
PID 1220 wrote to memory of 3712	1220	0eb97933b944dda15d90b7dd71fb707b994b5be58549d5663aae174a82238268.exe	87
PID 1220 wrote to memory of 3712	1220	0eb97933b944dda15d90b7dd71fb707b994b5be58549d5663aae174a82238268.exe	87
PID 1220 wrote to memory of 3712	1220	0eb97933b944dda15d90b7dd71fb707b994b5be58549d5663aae174a82238268.exe	87
PID 1220 wrote to memory of 3712	1220	0eb97933b944dda15d90b7dd71fb707b994b5be58549d5663aae174a82238268.exe	87
PID 1220 wrote to memory of 3712	1220	0eb97933b944dda15d90b7dd71fb707b994b5be58549d5663aae174a82238268.exe	87
PID 1220 wrote to memory of 3712	1220	0eb97933b944dda15d90b7dd71fb707b994b5be58549d5663aae174a82238268.exe	87
PID 3712 wrote to memory of 1324	3712	0eb97933b944dda15d90b7dd71fb707b994b5be58549d5663aae174a82238268.exe	95
PID 3712 wrote to memory of 1324	3712	0eb97933b944dda15d90b7dd71fb707b994b5be58549d5663aae174a82238268.exe	95
PID 3712 wrote to memory of 1324	3712	0eb97933b944dda15d90b7dd71fb707b994b5be58549d5663aae174a82238268.exe	95
PID 1324 wrote to memory of 3304	1324	build3.exe	96
PID 1324 wrote to memory of 3304	1324	build3.exe	96
PID 1324 wrote to memory of 3304	1324	build3.exe	96

C:\Users\Admin\AppData\Local\Temp\0eb97933b944dda15d90b7dd71fb707b994b5be58549d5663aae174a82238268.exe
"C:\Users\Admin\AppData\Local\Temp\0eb97933b944dda15d90b7dd71fb707b994b5be58549d5663aae174a82238268.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1740
- C:\Users\Admin\AppData\Local\Temp\0eb97933b944dda15d90b7dd71fb707b994b5be58549d5663aae174a82238268.exe
  "C:\Users\Admin\AppData\Local\Temp\0eb97933b944dda15d90b7dd71fb707b994b5be58549d5663aae174a82238268.exe"
  2⤵
  - Checks computer location settings
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:3372
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\7ca517ef-12c7-47a9-ac36-27128e9b17d8" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    PID:4504
- - C:\Users\Admin\AppData\Local\Temp\0eb97933b944dda15d90b7dd71fb707b994b5be58549d5663aae174a82238268.exe
    "C:\Users\Admin\AppData\Local\Temp\0eb97933b944dda15d90b7dd71fb707b994b5be58549d5663aae174a82238268.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:1220
  - - C:\Users\Admin\AppData\Local\Temp\0eb97933b944dda15d90b7dd71fb707b994b5be58549d5663aae174a82238268.exe
      "C:\Users\Admin\AppData\Local\Temp\0eb97933b944dda15d90b7dd71fb707b994b5be58549d5663aae174a82238268.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      Checks computer location settings
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of WriteProcessMemory
      PID:3712
    - - C:\Users\Admin\AppData\Local\e201ad09-f8c5-4611-b37e-30d30168e363\build3.exe
        
        "C:\Users\Admin\AppData\Local\e201ad09-f8c5-4611-b37e-30d30168e363\build3.exe"
        5⤵
        Executes dropped EXE
        Suspicious use of WriteProcessMemory
        
        PID:1324
      - C:\Windows\SysWOW64\schtasks.exe
        
        /C /create /F /sc minute /mo 1 /tn "Azure-Update-Task" /tr "C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe"
        6⤵
        Creates scheduled task(s)
        
        PID:3304

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

T1053

Persistence

Registry Run Keys / Startup Folder

T1060

Scheduled Task

T1053

Privilege Escalation

Scheduled Task

T1053

Defense Evasion

File and Directory Permissions Modification

T1222

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\7ca517ef-12c7-47a9-ac36-27128e9b17d8\0eb97933b944dda15d90b7dd71fb707b994b5be58549d5663aae174a82238268.exe

Filesize
768KB

MD5
5a8e2f2bdcc6be8d189e1badb8717ca0

SHA1
08d6fbe62d6bfbff71e9cb54d04bd995de47ea0d

SHA256
0eb97933b944dda15d90b7dd71fb707b994b5be58549d5663aae174a82238268

SHA512
a58c08f137bc73030de0105e67b8a42674b8e81f61cbd628fd636b789489ff55a27c5040fd92fce9c20e7eb29c61799ede1982e23e5a8a08b07d7bf6a555a7b5

Download Submit
C:\Users\Admin\AppData\Local\e201ad09-f8c5-4611-b37e-30d30168e363\build3.exe

Filesize
9KB

MD5
9ead10c08e72ae41921191f8db39bc16

SHA1
abe3bce01cd34afc88e2c838173f8c2bd0090ae1

SHA256
8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0

SHA512
aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a

Download Submit
C:\Users\Admin\AppData\Local\e201ad09-f8c5-4611-b37e-30d30168e363\build3.exe

Filesize
9KB

MD5
9ead10c08e72ae41921191f8db39bc16

SHA1
abe3bce01cd34afc88e2c838173f8c2bd0090ae1

SHA256
8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0

SHA512
aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a

Download Submit
C:\Users\Admin\AppData\Local\e201ad09-f8c5-4611-b37e-30d30168e363\build3.exe

Filesize
9KB

MD5
9ead10c08e72ae41921191f8db39bc16

SHA1
abe3bce01cd34afc88e2c838173f8c2bd0090ae1

SHA256
8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0

SHA512
aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a

Download Submit
memory/1740-135-0x0000000002780000-0x000000000289B000-memory.dmp

Filesize
1.1MB

Download
memory/3372-134-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3372-136-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3372-137-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3372-138-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3372-144-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3712-152-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3712-153-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3712-157-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3712-159-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3712-160-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3712-161-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3712-162-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3712-149-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3712-179-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3712-148-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3712-147-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download