Analysis
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max time kernel
136s -
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
05/06/2023, 14:51
Static task
static1
Behavioral task
behavioral1
Sample
07812999.exe
Resource
win7-20230220-en
General
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Target
07812999.exe
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Size
691KB
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MD5
dd505f7c59aa2882633c01034428e952
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SHA1
12ffe4b71bdda14909f5d88301597f9cdf75ff94
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SHA256
de1b9f6d4bf9909be6073eb4bb16b724a824e3d3d75baef2cfee19f538c79c7e
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SHA512
3c79eb968ce299b91d1c456f52c3a6cd2bfd75ae6ac8f6e35c56800e3d2e3f2ceec0e95545cb7cb6c6305e2a26ff1b681c65dd3470f1e9d16b8726e9c223ebd0
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SSDEEP
12288:SrgDkO3hHlWxMzIHREJVk/bq4izoW/m7GloyLwo6s7pSCpCETtwpkZQ6b98I:SMA4hHlWxMiQW/O4ue7koUos1JpfhkX4
Malware Config
Extracted
asyncrat
0.5.7B
Default
191.101.130.205:6606
191.101.130.205:7707
191.101.130.205:8808
AsyncMutex_6SI8OkPnk
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delay
3
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install
false
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install_folder
%AppData%
Signatures
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Async RAT payload 1 IoCs
resource yara_rule behavioral2/memory/4740-146-0x0000000000400000-0x0000000000412000-memory.dmp asyncrat -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-2548970870-3691742953-3895070203-1000\Control Panel\International\Geo\Nation 07812999.exe -
Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 4112 set thread context of 4740 4112 07812999.exe 90 -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
pid Process 4908 schtasks.exe -
Suspicious behavior: EnumeratesProcesses 2 IoCs
pid Process 3320 powershell.exe 3320 powershell.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 3320 powershell.exe -
Suspicious use of WriteProcessMemory 14 IoCs
description pid Process procid_target PID 4112 wrote to memory of 3320 4112 07812999.exe 86 PID 4112 wrote to memory of 3320 4112 07812999.exe 86 PID 4112 wrote to memory of 3320 4112 07812999.exe 86 PID 4112 wrote to memory of 4908 4112 07812999.exe 88 PID 4112 wrote to memory of 4908 4112 07812999.exe 88 PID 4112 wrote to memory of 4908 4112 07812999.exe 88 PID 4112 wrote to memory of 4740 4112 07812999.exe 90 PID 4112 wrote to memory of 4740 4112 07812999.exe 90 PID 4112 wrote to memory of 4740 4112 07812999.exe 90 PID 4112 wrote to memory of 4740 4112 07812999.exe 90 PID 4112 wrote to memory of 4740 4112 07812999.exe 90 PID 4112 wrote to memory of 4740 4112 07812999.exe 90 PID 4112 wrote to memory of 4740 4112 07812999.exe 90 PID 4112 wrote to memory of 4740 4112 07812999.exe 90
Processes
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C:\Users\Admin\AppData\Local\Temp\07812999.exe"C:\Users\Admin\AppData\Local\Temp\07812999.exe"1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4112 -
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\RjBtcy.exe"2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:3320
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C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\RjBtcy" /XML "C:\Users\Admin\AppData\Local\Temp\tmpEA6.tmp"2⤵
- Creates scheduled task(s)
PID:4908
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C:\Users\Admin\AppData\Local\Temp\07812999.exe"C:\Users\Admin\AppData\Local\Temp\07812999.exe"2⤵PID:4740
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
60B
MD5d17fe0a3f47be24a6453e9ef58c94641
SHA16ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA25696ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA5125b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
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Filesize
1KB
MD5006ef4145f04390215f1569d68014c6c
SHA14b1e2d6e5cda355672781d08ac444ddf000eb588
SHA25674860049c0065fd51f9f1831ebca7be80aa12f128360385b32cfcc7232807d9d
SHA51293320150bfd0fc765726862fbc538808d9404bbcaaed66f45c155e0001a045a3ec32ec915233b3607dff7d147cf3abcfbf49bbaa6fe9ff8b85a2bd2d45d57fcb