Analysis
- max time kernel
149s - max time network
152s - platform
windows10-2004_x64 - resource
win10v2004-20240221-en - resource tags
arch:x64arch:x86image:win10v2004-20240221-enlocale:en-usos:windows10-2004-x64system - submitted
25/02/2024, 22:50
Behavioral task
behavioral1
Sample
a4cb37757bffbf147b14c17f8939bc2c.exe
Resource
win7-20240220-en
5 signatures
150 seconds
Behavioral task
behavioral2
Sample
a4cb37757bffbf147b14c17f8939bc2c.exe
Resource
win10v2004-20240221-en
6 signatures
150 seconds
General
- Target a4cb37757bffbf147b14c17f8939bc2c.exe
- Size 33KB
- Sample240225-2sbplsfb8v
- SHA256 ea0482f3a349970b30e289698b063dcbc120c739b29d17425c4a6ebb6df924c8
- MD5 a4cb37757bffbf147b14c17f8939bc2c
- SHA1 6507f64428f1f3c1477c9abaed3570536da034c9
- SHA512 8f321388d916b6a8ce746f3cb132fc0443d4b85395bfb43afbbcd82fd4a833d57a6b6a422c4907451ab47d21ed82079e7c2ca6aeb2d051b20f0817d8a8535a91
- SSDEEP 768:zMuijtHf5g7/IIG3bGcYDBSvFIWuePQDGEsgRMdd5ri4ZaispD:INW71rcYDAWeoDrsEud5rz
- MD5 SHA1 SHA512 SSDEEP
Score
10/10
Malware Config
Extracted
Family
-
xtremerat
C2
-
z2a.no-ip.info
Signatures
- Detect XtremeRAT payload 3 IoCs
resource yara_rule behavioral2/memory/2972-1-0x0000000010000000-0x000000001004D000-memory.dmp family_xtremerat behavioral2/memory/4844-2-0x0000000010000000-0x000000001004D000-memory.dmp family_xtremerat behavioral2/memory/2972-3-0x0000000010000000-0x000000001004D000-memory.dmp family_xtremerat - XtremeRAT
The XtremeRAT was developed by xtremecoder and has been available since at least 2010, and written in Delphi.
-
resource yara_rule behavioral2/memory/4844-0-0x0000000010000000-0x000000001004D000-memory.dmp upx behavioral2/memory/2972-1-0x0000000010000000-0x000000001004D000-memory.dmp upx behavioral2/memory/4844-2-0x0000000010000000-0x000000001004D000-memory.dmp upx behavioral2/memory/2972-3-0x0000000010000000-0x000000001004D000-memory.dmp upx - Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Program crash 2 IoCs
pid pid_target Process procid_target 4160 2972 WerFault.exe 89 3100 2972 WerFault.exe 89 - Suspicious use of WriteProcessMemory 7 IoCs
description pid Process procid_target PID 4844 wrote to memory of 2972 4844 a4cb37757bffbf147b14c17f8939bc2c.exe 89 PID 4844 wrote to memory of 2972 4844 a4cb37757bffbf147b14c17f8939bc2c.exe 89 PID 4844 wrote to memory of 2972 4844 a4cb37757bffbf147b14c17f8939bc2c.exe 89 PID 4844 wrote to memory of 2972 4844 a4cb37757bffbf147b14c17f8939bc2c.exe 89 PID 4844 wrote to memory of 4784 4844 a4cb37757bffbf147b14c17f8939bc2c.exe 92 PID 4844 wrote to memory of 4784 4844 a4cb37757bffbf147b14c17f8939bc2c.exe 92 PID 4844 wrote to memory of 4784 4844 a4cb37757bffbf147b14c17f8939bc2c.exe 92
Processes
-
C:\Users\Admin\AppData\Local\Temp\a4cb37757bffbf147b14c17f8939bc2c.exe"C:\Users\Admin\AppData\Local\Temp\a4cb37757bffbf147b14c17f8939bc2c.exe"1⤵
- Suspicious use of WriteProcessMemory
PID:4844 -
C:\Windows\SysWOW64\svchost.exesvchost.exe2⤵PID:2972
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 2972 -s 4803⤵
- Program crash
PID:4160
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 2972 -s 4883⤵
- Program crash
PID:3100
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C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe"2⤵PID:4784
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 432 -p 2972 -ip 29721⤵PID:4724
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 540 -p 2972 -ip 29721⤵PID:1668