Analysis
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max time kernel
177s -
max time network
170s -
platform
windows10-2004_x64 -
resource
win10v2004-20231215-en -
resource tags
arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system -
submitted
27-12-2023 07:54
Static task
static1
Behavioral task
behavioral1
Sample
a99b1e48221b678c4da6621cc645bf0f.exe
Resource
win7-20231215-en
Behavioral task
behavioral2
Sample
a99b1e48221b678c4da6621cc645bf0f.exe
Resource
win10v2004-20231215-en
General
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Target
a99b1e48221b678c4da6621cc645bf0f.exe
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Size
697KB
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MD5
a99b1e48221b678c4da6621cc645bf0f
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SHA1
abbf4d11dc1ea12cdb96a13ac3fb9c7978dc078b
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SHA256
1ea24c494567b22d017f86556288372e708d7cfacd45472aa45568bd5102b271
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SHA512
ac15d68dfdc70224c698bd5515c60425d4ea202853e9504382ce950e31fa89213d132bac8cca8eec60d298ba20c6fdfb458b72450185a1b5d1e5f1fe9a0d86aa
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SSDEEP
12288:tirqB1AG3coGYUoQdqqJ6/uxOuMve/VOPhfFDwYl2vzcBtMmcRpaBtDnegA+G9bp:IM1AGcoktdqX/u/kPNF9lkHmWaBtn2bp
Malware Config
Signatures
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Checks computer location settings 2 TTPs 2 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-1815711207-1844170477-3539718864-1000\Control Panel\International\Geo\Nation a99b1e48221b678c4da6621cc645bf0f.exe Key value queried \REGISTRY\USER\S-1-5-21-1815711207-1844170477-3539718864-1000\Control Panel\International\Geo\Nation xxxxxx.exe -
Executes dropped EXE 2 IoCs
pid Process 4696 Keygen.exe 1856 xxxxxx.exe -
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 4544 1856 WerFault.exe 93 -
Gathers network information 2 TTPs 1 IoCs
Uses commandline utility to view network configuration.
pid Process 368 ipconfig.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
description pid Process Token: 33 2764 AUDIODG.EXE Token: SeIncBasePriorityPrivilege 2764 AUDIODG.EXE -
Suspicious use of SetWindowsHookEx 1 IoCs
pid Process 1856 xxxxxx.exe -
Suspicious use of WriteProcessMemory 9 IoCs
description pid Process procid_target PID 2404 wrote to memory of 4696 2404 a99b1e48221b678c4da6621cc645bf0f.exe 92 PID 2404 wrote to memory of 4696 2404 a99b1e48221b678c4da6621cc645bf0f.exe 92 PID 2404 wrote to memory of 4696 2404 a99b1e48221b678c4da6621cc645bf0f.exe 92 PID 2404 wrote to memory of 1856 2404 a99b1e48221b678c4da6621cc645bf0f.exe 93 PID 2404 wrote to memory of 1856 2404 a99b1e48221b678c4da6621cc645bf0f.exe 93 PID 2404 wrote to memory of 1856 2404 a99b1e48221b678c4da6621cc645bf0f.exe 93 PID 1856 wrote to memory of 368 1856 xxxxxx.exe 99 PID 1856 wrote to memory of 368 1856 xxxxxx.exe 99 PID 1856 wrote to memory of 368 1856 xxxxxx.exe 99
Processes
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C:\Users\Admin\AppData\Local\Temp\a99b1e48221b678c4da6621cc645bf0f.exe"C:\Users\Admin\AppData\Local\Temp\a99b1e48221b678c4da6621cc645bf0f.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2404 -
C:\Users\Admin\AppData\Local\Temp\Keygen.exe"C:\Users\Admin\AppData\Local\Temp\Keygen.exe"2⤵
- Executes dropped EXE
PID:4696
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C:\Users\Admin\AppData\Local\Temp\xxxxxx.exe"C:\Users\Admin\AppData\Local\Temp\xxxxxx.exe"2⤵
- Checks computer location settings
- Executes dropped EXE
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1856 -
C:\Windows\SysWOW64\ipconfig.exe"C:\Windows\System32\ipconfig.exe" /release3⤵
- Gathers network information
PID:368
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 1856 -s 6923⤵
- Program crash
PID:4544
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C:\Windows\system32\AUDIODG.EXEC:\Windows\system32\AUDIODG.EXE 0x2f8 0x2fc1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2764
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 1856 -ip 18561⤵PID:3080
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
217KB
MD5df5a77b4574b4034aa7bb632d80bcf98
SHA118b02e09b573806a4c14919755aea053a48846a7
SHA2565734ec906648d40a255b5e22e77fea99f1bb2cc237dc506549a5259e9f0da08c
SHA5124833e80cc50349ec37af8f408841687db4ce5b66fe185b12d7c564f5f45799bea6a35adbf655d2630436be246a6bb7a91dd2cf50c552848b24895b7dfa21506a
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Filesize
548KB
MD54d6bc1d7974c06161e1ed65c7f0a20a8
SHA11a98ef9a70d39f916a81e0e8c9cf95c8c145744b
SHA256024140fb411c120a4f7bdab9a46959b60da178910106bd0d73196a479243947c
SHA512c2d1b78364de65346e64e0fd0bed87c4ab110de1e03705b68489503f5069053a647d478c7b0c5217cc8f9f40fe39deceb2c809a714a92ffc8c741d273799e5ee