Analysis
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max time kernel
147s -
max time network
154s -
platform
windows10-2004_x64 -
resource
win10v2004-20240319-en -
resource tags
arch:x64arch:x86image:win10v2004-20240319-enlocale:en-usos:windows10-2004-x64system -
submitted
28-03-2024 14:00
Static task
static1
Behavioral task
behavioral1
Sample
KhT.scr
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
KhT.scr
Resource
win10v2004-20240319-en
General
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Target
KhT.scr
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Size
687KB
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MD5
62ed0ee9372f04bd637e3995624dbc0c
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SHA1
96e4d381325b9c0a0581993529baf0cb38050faf
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SHA256
17f1c3567b5334eca6e41e7a341faa999fdb22f64004a185874e23dd4a43d06d
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SHA512
7e3c79a487e8d472947aab1050db828ae7fe65ae1af049c00dfe7cd1b4668313665dd6380a32b7465a16da292e8270e53c35586ea39dcef3ec50ddc8a1bd2e1a
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SSDEEP
12288:4/K0YOwqOpWXqqfNg3Hsgtwmq+MzaMl7+fpfKIIP9HJYxbd:DO7rXHNg3HsgtwD+MzplCfxKzHJI
Malware Config
Extracted
agenttesla
Protocol: smtp- Host:
mail.sigmamotorspk.com - Port:
587 - Username:
khiro@sigmamotorspk.com - Password:
zarbeazab1234 - Email To:
maungth@b-mech.com.sg
Signatures
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AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
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Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
KhT.scrdescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-817259280-2658881748-983986378-1000\Control Panel\International\Geo\Nation KhT.scr -
Suspicious use of SetThreadContext 1 IoCs
Processes:
KhT.scrdescription pid process target process PID 3824 set thread context of 4048 3824 KhT.scr RegSvcs.exe -
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.
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Suspicious behavior: EnumeratesProcesses 17 IoCs
Processes:
KhT.scrpowershell.exeRegSvcs.exepid process 3824 KhT.scr 3824 KhT.scr 3824 KhT.scr 3824 KhT.scr 3824 KhT.scr 3824 KhT.scr 3824 KhT.scr 3136 powershell.exe 3136 powershell.exe 3824 KhT.scr 3824 KhT.scr 3824 KhT.scr 3824 KhT.scr 4048 RegSvcs.exe 4048 RegSvcs.exe 4048 RegSvcs.exe 3136 powershell.exe -
Suspicious use of AdjustPrivilegeToken 3 IoCs
Processes:
KhT.scrpowershell.exeRegSvcs.exedescription pid process Token: SeDebugPrivilege 3824 KhT.scr Token: SeDebugPrivilege 3136 powershell.exe Token: SeDebugPrivilege 4048 RegSvcs.exe -
Suspicious use of WriteProcessMemory 17 IoCs
Processes:
KhT.scrdescription pid process target process PID 3824 wrote to memory of 3136 3824 KhT.scr powershell.exe PID 3824 wrote to memory of 3136 3824 KhT.scr powershell.exe PID 3824 wrote to memory of 3136 3824 KhT.scr powershell.exe PID 3824 wrote to memory of 2280 3824 KhT.scr schtasks.exe PID 3824 wrote to memory of 2280 3824 KhT.scr schtasks.exe PID 3824 wrote to memory of 2280 3824 KhT.scr schtasks.exe PID 3824 wrote to memory of 4400 3824 KhT.scr RegSvcs.exe PID 3824 wrote to memory of 4400 3824 KhT.scr RegSvcs.exe PID 3824 wrote to memory of 4400 3824 KhT.scr RegSvcs.exe PID 3824 wrote to memory of 4048 3824 KhT.scr RegSvcs.exe PID 3824 wrote to memory of 4048 3824 KhT.scr RegSvcs.exe PID 3824 wrote to memory of 4048 3824 KhT.scr RegSvcs.exe PID 3824 wrote to memory of 4048 3824 KhT.scr RegSvcs.exe PID 3824 wrote to memory of 4048 3824 KhT.scr RegSvcs.exe PID 3824 wrote to memory of 4048 3824 KhT.scr RegSvcs.exe PID 3824 wrote to memory of 4048 3824 KhT.scr RegSvcs.exe PID 3824 wrote to memory of 4048 3824 KhT.scr RegSvcs.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\KhT.scr"C:\Users\Admin\AppData\Local\Temp\KhT.scr" /S1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\zTmBkRpHGbA.exe"2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\zTmBkRpHGbA" /XML "C:\Users\Admin\AppData\Local\Temp\tmpE53F.tmp"2⤵
- Creates scheduled task(s)
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C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"2⤵
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C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=4196 --field-trial-handle=2252,i,3429015581403167983,2708022432612919502,262144 --variations-seed-version /prefetch:81⤵
Network
MITRE ATT&CK Matrix ATT&CK v13
Replay Monitor
Loading Replay Monitor...
Downloads
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C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_h3sxqnz1.xya.ps1Filesize
60B
MD5d17fe0a3f47be24a6453e9ef58c94641
SHA16ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA25696ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA5125b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
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C:\Users\Admin\AppData\Local\Temp\tmpE53F.tmpFilesize
1KB
MD5eedc898b496f9b4b43dcb1875798f472
SHA165e54cad496330a6a42a7b60029181e074276fce
SHA25698c27c2453bba20b0baed992e5989e291975ed8b7be1f964e1f87a21372c1beb
SHA512a29d7734a211724cef9966d563fcb3c66268d6ad5b1f8223407fb3aefd0eb3621b8c88012423029d86bb05cd350a8e8df14944286bd5133195dd748107e9dc49
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memory/3136-19-0x0000000005610000-0x0000000005C38000-memory.dmpFilesize
6.2MB
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memory/3136-41-0x0000000006630000-0x000000000667C000-memory.dmpFilesize
304KB
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memory/3136-42-0x0000000002C00000-0x0000000002C10000-memory.dmpFilesize
64KB
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memory/3136-63-0x0000000007AA0000-0x0000000007AAE000-memory.dmpFilesize
56KB
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memory/3136-62-0x0000000007A70000-0x0000000007A81000-memory.dmpFilesize
68KB
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memory/3136-61-0x0000000007AF0000-0x0000000007B86000-memory.dmpFilesize
600KB
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memory/3136-60-0x00000000078E0000-0x00000000078EA000-memory.dmpFilesize
40KB
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memory/3136-59-0x0000000007870000-0x000000000788A000-memory.dmpFilesize
104KB
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memory/3136-58-0x0000000007EB0000-0x000000000852A000-memory.dmpFilesize
6.5MB
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memory/3136-16-0x0000000004FA0000-0x0000000004FD6000-memory.dmpFilesize
216KB
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memory/3136-57-0x0000000007730000-0x00000000077D3000-memory.dmpFilesize
652KB
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memory/3136-66-0x0000000007B90000-0x0000000007B98000-memory.dmpFilesize
32KB
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memory/3136-64-0x0000000007AB0000-0x0000000007AC4000-memory.dmpFilesize
80KB
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memory/3136-65-0x0000000007BB0000-0x0000000007BCA000-memory.dmpFilesize
104KB
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memory/3136-45-0x0000000075BF0000-0x0000000075C3C000-memory.dmpFilesize
304KB
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memory/3136-18-0x0000000075350000-0x0000000075B00000-memory.dmpFilesize
7.7MB
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memory/3136-22-0x0000000005580000-0x00000000055A2000-memory.dmpFilesize
136KB
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memory/3136-23-0x0000000005DF0000-0x0000000005E56000-memory.dmpFilesize
408KB
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memory/3136-55-0x0000000006B10000-0x0000000006B2E000-memory.dmpFilesize
120KB
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memory/3136-24-0x0000000005F10000-0x0000000005F76000-memory.dmpFilesize
408KB
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memory/3136-69-0x0000000075350000-0x0000000075B00000-memory.dmpFilesize
7.7MB
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memory/3136-20-0x0000000002C00000-0x0000000002C10000-memory.dmpFilesize
64KB
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memory/3136-44-0x0000000006B30000-0x0000000006B62000-memory.dmpFilesize
200KB
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memory/3136-37-0x0000000006080000-0x00000000063D4000-memory.dmpFilesize
3.3MB
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memory/3136-43-0x000000007F720000-0x000000007F730000-memory.dmpFilesize
64KB
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memory/3136-40-0x0000000006560000-0x000000000657E000-memory.dmpFilesize
120KB
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memory/3136-21-0x0000000002C00000-0x0000000002C10000-memory.dmpFilesize
64KB
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memory/3824-15-0x0000000005740000-0x0000000005750000-memory.dmpFilesize
64KB
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memory/3824-4-0x0000000005740000-0x0000000005750000-memory.dmpFilesize
64KB
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memory/3824-39-0x0000000075350000-0x0000000075B00000-memory.dmpFilesize
7.7MB
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memory/3824-1-0x0000000075350000-0x0000000075B00000-memory.dmpFilesize
7.7MB
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memory/3824-2-0x0000000005C80000-0x0000000006224000-memory.dmpFilesize
5.6MB
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memory/3824-3-0x0000000005770000-0x0000000005802000-memory.dmpFilesize
584KB
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memory/3824-0-0x0000000000CB0000-0x0000000000D62000-memory.dmpFilesize
712KB
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memory/3824-13-0x0000000075350000-0x0000000075B00000-memory.dmpFilesize
7.7MB
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memory/3824-9-0x0000000009780000-0x000000000981C000-memory.dmpFilesize
624KB
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memory/3824-8-0x0000000007110000-0x0000000007192000-memory.dmpFilesize
520KB
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memory/3824-7-0x0000000005A20000-0x0000000005A2C000-memory.dmpFilesize
48KB
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memory/3824-6-0x0000000005C60000-0x0000000005C7A000-memory.dmpFilesize
104KB
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memory/3824-5-0x0000000005900000-0x000000000590A000-memory.dmpFilesize
40KB
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memory/4048-36-0x0000000075350000-0x0000000075B00000-memory.dmpFilesize
7.7MB
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memory/4048-56-0x0000000006110000-0x0000000006160000-memory.dmpFilesize
320KB
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memory/4048-25-0x0000000000400000-0x0000000000440000-memory.dmpFilesize
256KB
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memory/4048-38-0x0000000005240000-0x0000000005250000-memory.dmpFilesize
64KB
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memory/4048-70-0x0000000075350000-0x0000000075B00000-memory.dmpFilesize
7.7MB
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memory/4048-71-0x0000000005240000-0x0000000005250000-memory.dmpFilesize
64KB