Analysis
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max time kernel
298s -
max time network
298s -
platform
windows10-1703_x64 -
resource
win10-20231215-en -
resource tags
arch:x64arch:x86image:win10-20231215-enlocale:en-usos:windows10-1703-x64system -
submitted
15/01/2024, 04:51
Static task
static1
Behavioral task
behavioral1
Sample
5a34ca5e10a7a7d16004ac527df6de33aae7029574ac58d27fc4070070060989.exe
Resource
win7-20231215-en
Behavioral task
behavioral2
Sample
5a34ca5e10a7a7d16004ac527df6de33aae7029574ac58d27fc4070070060989.exe
Resource
win10-20231215-en
General
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Target
5a34ca5e10a7a7d16004ac527df6de33aae7029574ac58d27fc4070070060989.exe
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Size
849KB
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MD5
72fd6329b754dd39cfec917c900abb53
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SHA1
fa5e56d102dacecf25547c850e3624b41a85c62b
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SHA256
5a34ca5e10a7a7d16004ac527df6de33aae7029574ac58d27fc4070070060989
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SHA512
0c3bd337190662d25af61cce7c5f2fd86c72ec7e0d73e9c2a4fc9ff816f0e5d331b881d9548086db9496ff98755791e23a5346e5d5888a8e08b7203e2a62ea55
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SSDEEP
12288:ev0ZHRrxb4fKFjLWA37A1jrX0Hq1+KiFja4rS+P008/Daab1Cw4GT:ev09RvFz3o91+o4rS+P00KfWm
Malware Config
Extracted
djvu
http://zexeq.com/test1/get.php
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extension
.cdwe
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offline_id
dSwr1XNNi5cIitB5eDPbMANcusB1dWGDB8ToUnt1
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payload_url
http://brusuax.com/dl/build2.exe
http://zexeq.com/files/1/build3.exe
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ransomnote
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Signatures
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Detect Vidar Stealer 5 IoCs
resource yara_rule behavioral2/memory/772-41-0x0000000000810000-0x000000000085B000-memory.dmp family_vidar_v6 behavioral2/memory/1480-42-0x0000000000400000-0x000000000065E000-memory.dmp family_vidar_v6 behavioral2/memory/1480-45-0x0000000000400000-0x000000000065E000-memory.dmp family_vidar_v6 behavioral2/memory/1480-46-0x0000000000400000-0x000000000065E000-memory.dmp family_vidar_v6 behavioral2/memory/1480-51-0x0000000000400000-0x000000000065E000-memory.dmp family_vidar_v6 -
Detected Djvu ransomware 17 IoCs
resource yara_rule behavioral2/memory/3380-2-0x00000000022A0000-0x00000000023BB000-memory.dmp family_djvu behavioral2/memory/3876-3-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/3876-4-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/3876-5-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/3876-6-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/3876-17-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/364-21-0x0000000000870000-0x0000000000910000-memory.dmp family_djvu behavioral2/memory/4896-22-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/4896-23-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/4896-24-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/4896-29-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/4896-30-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/4896-38-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/4896-53-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/4896-55-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/4896-56-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/4896-58-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu -
Djvu Ransomware
Ransomware which is a variant of the STOP family.
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Downloads MZ/PE file
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Executes dropped EXE 2 IoCs
pid Process 772 build2.exe 1480 build2.exe -
Modifies file permissions 1 TTPs 1 IoCs
pid Process 1076 icacls.exe -
Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-1968775928-2924269989-3510977013-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\dc68dece-be16-4b9f-a710-d0fd190858cb\\5a34ca5e10a7a7d16004ac527df6de33aae7029574ac58d27fc4070070060989.exe\" --AutoStart" 5a34ca5e10a7a7d16004ac527df6de33aae7029574ac58d27fc4070070060989.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 2 api.2ip.ua 3 api.2ip.ua 11 api.2ip.ua -
Suspicious use of SetThreadContext 3 IoCs
description pid Process procid_target PID 3380 set thread context of 3876 3380 5a34ca5e10a7a7d16004ac527df6de33aae7029574ac58d27fc4070070060989.exe 72 PID 364 set thread context of 4896 364 5a34ca5e10a7a7d16004ac527df6de33aae7029574ac58d27fc4070070060989.exe 76 PID 772 set thread context of 1480 772 build2.exe 78 -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Program crash 1 IoCs
pid pid_target Process procid_target 4516 1480 WerFault.exe 78 -
Suspicious behavior: EnumeratesProcesses 4 IoCs
pid Process 3876 5a34ca5e10a7a7d16004ac527df6de33aae7029574ac58d27fc4070070060989.exe 3876 5a34ca5e10a7a7d16004ac527df6de33aae7029574ac58d27fc4070070060989.exe 4896 5a34ca5e10a7a7d16004ac527df6de33aae7029574ac58d27fc4070070060989.exe 4896 5a34ca5e10a7a7d16004ac527df6de33aae7029574ac58d27fc4070070060989.exe -
Suspicious use of WriteProcessMemory 39 IoCs
description pid Process procid_target PID 3380 wrote to memory of 3876 3380 5a34ca5e10a7a7d16004ac527df6de33aae7029574ac58d27fc4070070060989.exe 72 PID 3380 wrote to memory of 3876 3380 5a34ca5e10a7a7d16004ac527df6de33aae7029574ac58d27fc4070070060989.exe 72 PID 3380 wrote to memory of 3876 3380 5a34ca5e10a7a7d16004ac527df6de33aae7029574ac58d27fc4070070060989.exe 72 PID 3380 wrote to memory of 3876 3380 5a34ca5e10a7a7d16004ac527df6de33aae7029574ac58d27fc4070070060989.exe 72 PID 3380 wrote to memory of 3876 3380 5a34ca5e10a7a7d16004ac527df6de33aae7029574ac58d27fc4070070060989.exe 72 PID 3380 wrote to memory of 3876 3380 5a34ca5e10a7a7d16004ac527df6de33aae7029574ac58d27fc4070070060989.exe 72 PID 3380 wrote to memory of 3876 3380 5a34ca5e10a7a7d16004ac527df6de33aae7029574ac58d27fc4070070060989.exe 72 PID 3380 wrote to memory of 3876 3380 5a34ca5e10a7a7d16004ac527df6de33aae7029574ac58d27fc4070070060989.exe 72 PID 3380 wrote to memory of 3876 3380 5a34ca5e10a7a7d16004ac527df6de33aae7029574ac58d27fc4070070060989.exe 72 PID 3380 wrote to memory of 3876 3380 5a34ca5e10a7a7d16004ac527df6de33aae7029574ac58d27fc4070070060989.exe 72 PID 3876 wrote to memory of 1076 3876 5a34ca5e10a7a7d16004ac527df6de33aae7029574ac58d27fc4070070060989.exe 73 PID 3876 wrote to memory of 1076 3876 5a34ca5e10a7a7d16004ac527df6de33aae7029574ac58d27fc4070070060989.exe 73 PID 3876 wrote to memory of 1076 3876 5a34ca5e10a7a7d16004ac527df6de33aae7029574ac58d27fc4070070060989.exe 73 PID 3876 wrote to memory of 364 3876 5a34ca5e10a7a7d16004ac527df6de33aae7029574ac58d27fc4070070060989.exe 74 PID 3876 wrote to memory of 364 3876 5a34ca5e10a7a7d16004ac527df6de33aae7029574ac58d27fc4070070060989.exe 74 PID 3876 wrote to memory of 364 3876 5a34ca5e10a7a7d16004ac527df6de33aae7029574ac58d27fc4070070060989.exe 74 PID 364 wrote to memory of 4896 364 5a34ca5e10a7a7d16004ac527df6de33aae7029574ac58d27fc4070070060989.exe 76 PID 364 wrote to memory of 4896 364 5a34ca5e10a7a7d16004ac527df6de33aae7029574ac58d27fc4070070060989.exe 76 PID 364 wrote to memory of 4896 364 5a34ca5e10a7a7d16004ac527df6de33aae7029574ac58d27fc4070070060989.exe 76 PID 364 wrote to memory of 4896 364 5a34ca5e10a7a7d16004ac527df6de33aae7029574ac58d27fc4070070060989.exe 76 PID 364 wrote to memory of 4896 364 5a34ca5e10a7a7d16004ac527df6de33aae7029574ac58d27fc4070070060989.exe 76 PID 364 wrote to memory of 4896 364 5a34ca5e10a7a7d16004ac527df6de33aae7029574ac58d27fc4070070060989.exe 76 PID 364 wrote to memory of 4896 364 5a34ca5e10a7a7d16004ac527df6de33aae7029574ac58d27fc4070070060989.exe 76 PID 364 wrote to memory of 4896 364 5a34ca5e10a7a7d16004ac527df6de33aae7029574ac58d27fc4070070060989.exe 76 PID 364 wrote to memory of 4896 364 5a34ca5e10a7a7d16004ac527df6de33aae7029574ac58d27fc4070070060989.exe 76 PID 364 wrote to memory of 4896 364 5a34ca5e10a7a7d16004ac527df6de33aae7029574ac58d27fc4070070060989.exe 76 PID 4896 wrote to memory of 772 4896 5a34ca5e10a7a7d16004ac527df6de33aae7029574ac58d27fc4070070060989.exe 77 PID 4896 wrote to memory of 772 4896 5a34ca5e10a7a7d16004ac527df6de33aae7029574ac58d27fc4070070060989.exe 77 PID 4896 wrote to memory of 772 4896 5a34ca5e10a7a7d16004ac527df6de33aae7029574ac58d27fc4070070060989.exe 77 PID 772 wrote to memory of 1480 772 build2.exe 78 PID 772 wrote to memory of 1480 772 build2.exe 78 PID 772 wrote to memory of 1480 772 build2.exe 78 PID 772 wrote to memory of 1480 772 build2.exe 78 PID 772 wrote to memory of 1480 772 build2.exe 78 PID 772 wrote to memory of 1480 772 build2.exe 78 PID 772 wrote to memory of 1480 772 build2.exe 78 PID 772 wrote to memory of 1480 772 build2.exe 78 PID 772 wrote to memory of 1480 772 build2.exe 78 PID 772 wrote to memory of 1480 772 build2.exe 78
Processes
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C:\Users\Admin\AppData\Local\Temp\5a34ca5e10a7a7d16004ac527df6de33aae7029574ac58d27fc4070070060989.exe"C:\Users\Admin\AppData\Local\Temp\5a34ca5e10a7a7d16004ac527df6de33aae7029574ac58d27fc4070070060989.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3380 -
C:\Users\Admin\AppData\Local\Temp\5a34ca5e10a7a7d16004ac527df6de33aae7029574ac58d27fc4070070060989.exe"C:\Users\Admin\AppData\Local\Temp\5a34ca5e10a7a7d16004ac527df6de33aae7029574ac58d27fc4070070060989.exe"2⤵
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:3876 -
C:\Windows\SysWOW64\icacls.exeicacls "C:\Users\Admin\AppData\Local\dc68dece-be16-4b9f-a710-d0fd190858cb" /deny *S-1-1-0:(OI)(CI)(DE,DC)3⤵
- Modifies file permissions
PID:1076
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C:\Users\Admin\AppData\Local\Temp\5a34ca5e10a7a7d16004ac527df6de33aae7029574ac58d27fc4070070060989.exe"C:\Users\Admin\AppData\Local\Temp\5a34ca5e10a7a7d16004ac527df6de33aae7029574ac58d27fc4070070060989.exe" --Admin IsNotAutoStart IsNotTask3⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:364 -
C:\Users\Admin\AppData\Local\Temp\5a34ca5e10a7a7d16004ac527df6de33aae7029574ac58d27fc4070070060989.exe"C:\Users\Admin\AppData\Local\Temp\5a34ca5e10a7a7d16004ac527df6de33aae7029574ac58d27fc4070070060989.exe" --Admin IsNotAutoStart IsNotTask4⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:4896 -
C:\Users\Admin\AppData\Local\e0d07755-3ba1-4fb8-9a23-b7ae607427d2\build2.exe"C:\Users\Admin\AppData\Local\e0d07755-3ba1-4fb8-9a23-b7ae607427d2\build2.exe"5⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:772 -
C:\Users\Admin\AppData\Local\e0d07755-3ba1-4fb8-9a23-b7ae607427d2\build2.exe"C:\Users\Admin\AppData\Local\e0d07755-3ba1-4fb8-9a23-b7ae607427d2\build2.exe"6⤵
- Executes dropped EXE
PID:1480 -
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 1480 -s 18967⤵
- Program crash
PID:4516
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA
Filesize1KB
MD5b7470a9aa569b259d4c2bb3b80ae3aa3
SHA1093290296b7f1e402ef96e4b33a88f064aa401eb
SHA256ee8aeed77dd9f1631fa75845214d75bfe04951a61892410ee369035e13fd14c6
SHA5124da3fc09260692f159c37b068664852931b712c8173de5e4b294799ac33ecf179055aaeb016fd0afad88cbfc50a571c4c88033dca56a573431af7462ea7979be
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464
Filesize724B
MD58202a1cd02e7d69597995cabbe881a12
SHA18858d9d934b7aa9330ee73de6c476acf19929ff6
SHA25658f381c3a0a0ace6321da22e40bd44a597bd98b9c9390ab9258426b5cf75a7a5
SHA51297ba9fceab995d4bef706f8deef99e06862999734ebe6a05832c710104479c6337cbf0a76e1c1e0f91566a61334dc100d837dfd049e20da765fe49def684f9c9
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA
Filesize410B
MD58269da8ab4a44aa7076d53a87a3e6d7b
SHA1d23ea909b27994ffc29d2760c14fdcf54bf33b9c
SHA256c9eef76da9cd8e392e3e755c866a12fb3c3d47b0cd167ce9f6ddc3a66702f90d
SHA51265d76174905cc9f321cc81b083f407fbb4af9d66ac691a6ae0a466f016735c616f295347a033a4c7ff7a5a93d2235a430603dd0eb8615c318d123fce5972c49f
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464
Filesize392B
MD511581ed9bf85b0762bf9b961896437dc
SHA13e3abd053edb2ec712e42a12e7611fbc0c918c94
SHA2568ee0f48aa91271b864f9820021b729f0032be7423d0a1f369f02d20b0db954ca
SHA51265cf11c761fd7ae7040242ceab43c3576f9021f203c1bd0be260ffcc73ed09ee5e8898ab9158d2743e38c08e52fc972dd4157af4c323a6677e3a37d207da7198
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C:\Users\Admin\AppData\Local\dc68dece-be16-4b9f-a710-d0fd190858cb\5a34ca5e10a7a7d16004ac527df6de33aae7029574ac58d27fc4070070060989.exe
Filesize849KB
MD572fd6329b754dd39cfec917c900abb53
SHA1fa5e56d102dacecf25547c850e3624b41a85c62b
SHA2565a34ca5e10a7a7d16004ac527df6de33aae7029574ac58d27fc4070070060989
SHA5120c3bd337190662d25af61cce7c5f2fd86c72ec7e0d73e9c2a4fc9ff816f0e5d331b881d9548086db9496ff98755791e23a5346e5d5888a8e08b7203e2a62ea55
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Filesize
358KB
MD5c4070da9f9b0581171af16e681ccdff8
SHA13fb4182921fdc3acd7873ebe113ac5522585312a
SHA25626063c78e5418610471a9f3a00a155d7d1e5b29856e1979ba3bdc42681a871d0
SHA512c7569cea7f1a841e7cac9cd41287dba3bcacf2cf9dee7bece88800848a7ad5dc4cd2bdc896c7389f0f1144079bbe168048b3f722bcd76fa5d6e14f3081bb6427