Analysis
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max time kernel
93s -
max time network
146s -
platform
windows10-2004_x64 -
resource
win10v2004-20231222-en -
resource tags
arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system -
submitted
27-12-2023 01:23
Static task
static1
Behavioral task
behavioral1
Sample
Cyber Hunter Install.exe
Resource
win7-20231215-en
Behavioral task
behavioral2
Sample
Cyber Hunter Install.exe
Resource
win10v2004-20231222-en
General
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Target
Cyber Hunter Install.exe
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Size
4.9MB
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MD5
f836f277cbcadfecfc988bf350d410c3
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SHA1
f9a66d7876a6eb09763e0705beaa999d99f53754
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SHA256
d38bc9871b0eba08a6b77314a6d3fdc94531315c2659ea60d8d23b4450ed3838
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SHA512
ac284e90bf72d564ceaeda28383efc8793f286002d2d7ae37f08f05a9170faa5f77a8e741cb60fabb1f48f9abc769070fc3620fa9c5d7dfce60029b6d58c8280
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SSDEEP
12288:D6BeSpuojQEv1E729k4nRQ/ceb5WdWOeoP3/F+2nGr6A5zuzhGlC5LcB+cVgeMtb:E0yLW2mudcocIE
Malware Config
Extracted
marsstealer
Default
moscow-post.com/xaoniu/server/waungowangued/g.php
Signatures
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Mars Stealer
An infostealer written in C++ based on other infostealers.
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Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
Cyber Hunter Install.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-3803511929-1339359695-2191195476-1000\Control Panel\International\Geo\Nation Cyber Hunter Install.exe -
Executes dropped EXE 1 IoCs
Processes:
FMJHV7FPJB4.exepid process 4512 FMJHV7FPJB4.exe -
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
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Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Program crash 1 IoCs
Processes:
WerFault.exepid pid_target process target process 2652 4512 WerFault.exe FMJHV7FPJB4.exe -
Suspicious use of WriteProcessMemory 3 IoCs
Processes:
Cyber Hunter Install.exedescription pid process target process PID 3140 wrote to memory of 4512 3140 Cyber Hunter Install.exe FMJHV7FPJB4.exe PID 3140 wrote to memory of 4512 3140 Cyber Hunter Install.exe FMJHV7FPJB4.exe PID 3140 wrote to memory of 4512 3140 Cyber Hunter Install.exe FMJHV7FPJB4.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\Cyber Hunter Install.exe"C:\Users\Admin\AppData\Local\Temp\Cyber Hunter Install.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
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C:\ProgramData\Start Menu\FMJHV7FPJB4.exe"C:\ProgramData\Start Menu\FMJHV7FPJB4.exe"2⤵
- Executes dropped EXE
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 4512 -s 13843⤵
- Program crash
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 428 -p 4512 -ip 45121⤵
Network
MITRE ATT&CK Matrix ATT&CK v13
Replay Monitor
Loading Replay Monitor...
Downloads
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C:\ProgramData\Microsoft\Windows\Start Menu\FMJHV7FPJB4.exeFilesize
130KB
MD54d3428b6ff6ef243dd7e1ca0dba34df2
SHA1634f60b5dda3147500147185201ca3c924939118
SHA256fde3d7352b6acee45e18b7edf458527f02d8f3ebd3dd20ac3cf7e7837b49165f
SHA512b829868f3fb648b3ebf1659a29fd18ecdc74ded84c5cdae793c4a870a90f1f0e2f00c9baeb7ad7c98da120288f99789878b5f7f0341803dc15a399bbc18a453d
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C:\ProgramData\Microsoft\Windows\Start Menu\FMJHV7FPJB4.exeFilesize
159KB
MD51f51c4bdd8bd5b81fe2638ffa85fd5d2
SHA143146ce6867ba788dc50ddfe1d9ec4d89aafd859
SHA256e7dcfe91d1f3c1b1d33b8f7eae174999b04faec7825474baf846aaa408d97c38
SHA5127f0d34c1ccf39cb0c5600507b2b00185e097a6423cc622b66659cd46aef6bb55b6a5806971a816eab3f990b8099cdc9a606cacab49a1f6bd002fcf9a2964ca98
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memory/3140-0-0x0000000000E40000-0x0000000000ED2000-memory.dmpFilesize
584KB
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memory/3140-1-0x0000000074860000-0x0000000075010000-memory.dmpFilesize
7.7MB
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memory/3140-13-0x0000000074860000-0x0000000075010000-memory.dmpFilesize
7.7MB
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memory/4512-12-0x0000000000400000-0x000000000043D000-memory.dmpFilesize
244KB
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memory/4512-15-0x0000000000400000-0x000000000043D000-memory.dmpFilesize
244KB