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Analysis
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max time kernel
150s -
max time network
153s -
platform
windows10-2004_x64 -
resource
win10v2004-20240226-en -
resource tags
arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system -
submitted
07/04/2024, 00:05
Behavioral task
behavioral1
Sample
a7903a792f681e00d5c41c11bcb041227a13f16f4f1f5fde1bdb1722c2f7085b.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
a7903a792f681e00d5c41c11bcb041227a13f16f4f1f5fde1bdb1722c2f7085b.exe
Resource
win10v2004-20240226-en
General
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Target
a7903a792f681e00d5c41c11bcb041227a13f16f4f1f5fde1bdb1722c2f7085b.exe
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Size
177KB
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MD5
0bebcc64ad6ab3aed9b2a5b783db1b7a
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SHA1
2c4f870a2c89299b638668e868fc1ece233df2df
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SHA256
a7903a792f681e00d5c41c11bcb041227a13f16f4f1f5fde1bdb1722c2f7085b
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SHA512
6fb4dafe91444d348afe91eb360bd18abc745268974864ca8e99f4d64f7a5ed4eced40ec2462b9347092916ed914f0bc82a7462f436c3c0bc572d5669d82f17b
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SSDEEP
3072:ksYkcYIUQObxophkyWOVotM+lmsolAIrRuw+mqv9j1MWLQh:nVIabOLyG+lDAA
Malware Config
Extracted
xworm
uk2.localto.net:32941:443
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Install_directory
%ProgramData%
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install_file
svchost.exe
Signatures
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Detect Xworm Payload 2 IoCs
resource yara_rule behavioral2/memory/1440-0-0x0000000000D40000-0x0000000000D72000-memory.dmp family_xworm behavioral2/files/0x0008000000023226-76.dat family_xworm -
Detects Windows executables referencing non-Windows User-Agents 2 IoCs
resource yara_rule behavioral2/memory/1440-0-0x0000000000D40000-0x0000000000D72000-memory.dmp INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA behavioral2/files/0x0008000000023226-76.dat INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA -
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-1-5-21-557049126-2506969350-2798870634-1000\Control Panel\International\Geo\Nation a7903a792f681e00d5c41c11bcb041227a13f16f4f1f5fde1bdb1722c2f7085b.exe -
Drops startup file 2 IoCs
description ioc Process File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\svchost.lnk a7903a792f681e00d5c41c11bcb041227a13f16f4f1f5fde1bdb1722c2f7085b.exe File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\svchost.lnk a7903a792f681e00d5c41c11bcb041227a13f16f4f1f5fde1bdb1722c2f7085b.exe -
Executes dropped EXE 2 IoCs
pid Process 2924 svchost.exe 4468 svchost.exe -
Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-557049126-2506969350-2798870634-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\svchost = "C:\\ProgramData\\svchost.exe" a7903a792f681e00d5c41c11bcb041227a13f16f4f1f5fde1bdb1722c2f7085b.exe -
Looks up external IP address via web service 1 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
flow ioc 12 ip-api.com -
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 4396 schtasks.exe -
Suspicious behavior: EnumeratesProcesses 10 IoCs
pid Process 3564 powershell.exe 3564 powershell.exe 4900 powershell.exe 4900 powershell.exe 3812 powershell.exe 3812 powershell.exe 4092 powershell.exe 4092 powershell.exe 4092 powershell.exe 1440 a7903a792f681e00d5c41c11bcb041227a13f16f4f1f5fde1bdb1722c2f7085b.exe -
Suspicious use of AdjustPrivilegeToken 8 IoCs
description pid Process Token: SeDebugPrivilege 1440 a7903a792f681e00d5c41c11bcb041227a13f16f4f1f5fde1bdb1722c2f7085b.exe Token: SeDebugPrivilege 3564 powershell.exe Token: SeDebugPrivilege 4900 powershell.exe Token: SeDebugPrivilege 3812 powershell.exe Token: SeDebugPrivilege 4092 powershell.exe Token: SeDebugPrivilege 1440 a7903a792f681e00d5c41c11bcb041227a13f16f4f1f5fde1bdb1722c2f7085b.exe Token: SeDebugPrivilege 2924 svchost.exe Token: SeDebugPrivilege 4468 svchost.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
pid Process 1440 a7903a792f681e00d5c41c11bcb041227a13f16f4f1f5fde1bdb1722c2f7085b.exe -
Suspicious use of WriteProcessMemory 10 IoCs
description pid Process procid_target PID 1440 wrote to memory of 3564 1440 a7903a792f681e00d5c41c11bcb041227a13f16f4f1f5fde1bdb1722c2f7085b.exe 93 PID 1440 wrote to memory of 3564 1440 a7903a792f681e00d5c41c11bcb041227a13f16f4f1f5fde1bdb1722c2f7085b.exe 93 PID 1440 wrote to memory of 4900 1440 a7903a792f681e00d5c41c11bcb041227a13f16f4f1f5fde1bdb1722c2f7085b.exe 95 PID 1440 wrote to memory of 4900 1440 a7903a792f681e00d5c41c11bcb041227a13f16f4f1f5fde1bdb1722c2f7085b.exe 95 PID 1440 wrote to memory of 3812 1440 a7903a792f681e00d5c41c11bcb041227a13f16f4f1f5fde1bdb1722c2f7085b.exe 98 PID 1440 wrote to memory of 3812 1440 a7903a792f681e00d5c41c11bcb041227a13f16f4f1f5fde1bdb1722c2f7085b.exe 98 PID 1440 wrote to memory of 4092 1440 a7903a792f681e00d5c41c11bcb041227a13f16f4f1f5fde1bdb1722c2f7085b.exe 102 PID 1440 wrote to memory of 4092 1440 a7903a792f681e00d5c41c11bcb041227a13f16f4f1f5fde1bdb1722c2f7085b.exe 102 PID 1440 wrote to memory of 4396 1440 a7903a792f681e00d5c41c11bcb041227a13f16f4f1f5fde1bdb1722c2f7085b.exe 104 PID 1440 wrote to memory of 4396 1440 a7903a792f681e00d5c41c11bcb041227a13f16f4f1f5fde1bdb1722c2f7085b.exe 104 -
Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
Processes
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C:\Users\Admin\AppData\Local\Temp\a7903a792f681e00d5c41c11bcb041227a13f16f4f1f5fde1bdb1722c2f7085b.exe"C:\Users\Admin\AppData\Local\Temp\a7903a792f681e00d5c41c11bcb041227a13f16f4f1f5fde1bdb1722c2f7085b.exe"1⤵
- Checks computer location settings
- Drops startup file
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1440 -
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\a7903a792f681e00d5c41c11bcb041227a13f16f4f1f5fde1bdb1722c2f7085b.exe'2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:3564
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C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'a7903a792f681e00d5c41c11bcb041227a13f16f4f1f5fde1bdb1722c2f7085b.exe'2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:4900
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C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\ProgramData\svchost.exe'2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:3812
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C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'svchost.exe'2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:4092
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C:\Windows\System32\schtasks.exe"C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "svchost" /tr "C:\ProgramData\svchost.exe"2⤵
- Creates scheduled task(s)
PID:4396
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C:\ProgramData\svchost.exeC:\ProgramData\svchost.exe1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:2924
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C:\ProgramData\svchost.exeC:\ProgramData\svchost.exe1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:4468
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
177KB
MD50bebcc64ad6ab3aed9b2a5b783db1b7a
SHA12c4f870a2c89299b638668e868fc1ece233df2df
SHA256a7903a792f681e00d5c41c11bcb041227a13f16f4f1f5fde1bdb1722c2f7085b
SHA5126fb4dafe91444d348afe91eb360bd18abc745268974864ca8e99f4d64f7a5ed4eced40ec2462b9347092916ed914f0bc82a7462f436c3c0bc572d5669d82f17b
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Filesize
2KB
MD5d85ba6ff808d9e5444a4b369f5bc2730
SHA131aa9d96590fff6981b315e0b391b575e4c0804a
SHA25684739c608a73509419748e4e20e6cc4e1846056c3fe1929a8300d5a1a488202f
SHA5128c414eb55b45212af385accc16d9d562adba2123583ce70d22b91161fe878683845512a78f04dedd4ea98ed9b174dbfa98cf696370598ad8e6fbd1e714f1f249
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Filesize
654B
MD52ff39f6c7249774be85fd60a8f9a245e
SHA1684ff36b31aedc1e587c8496c02722c6698c1c4e
SHA256e1b91642d85d98124a6a31f710e137ab7fd90dec30e74a05ab7fcf3b7887dced
SHA5121d7e8b92ef4afd463d62cfa7e8b9d1799db5bf2a263d3cd7840df2e0a1323d24eb595b5f8eb615c6cb15f9e3a7b4fc99f8dd6a3d34479222e966ec708998aed1
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Filesize
944B
MD5bd5940f08d0be56e65e5f2aaf47c538e
SHA1d7e31b87866e5e383ab5499da64aba50f03e8443
SHA2562d2f364c75bd2897504249f42cdf1d19374f5230aad68fa9154ea3d03e3031a6
SHA512c34d10c7e07da44a180fae9889b61f08903aa84e8ddfa80c31c272b1ef9d491b8cec6b8a4c836c3cb1583fe8f4955c6a8db872515de3a9e10eae09610c959406
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Filesize
944B
MD52fedf8712645087d38863175dedeb5c9
SHA10439c2d02f2453e74d4fd1ac30d15e177df300e2
SHA256e611b8f3de57748f850afc50494c10cb0bbe26b1d8ec5cfcf43edd623937ff00
SHA512678fde4ecd757ed2250225a5bd4c9d7597d4597bcc4e2875de252d912d2fb635eeef2b4b8ae57ce2f75e9f9148d19d787fdfaf12044c48f2c9535d1f03da4f92
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Filesize
944B
MD55cfe303e798d1cc6c1dab341e7265c15
SHA1cd2834e05191a24e28a100f3f8114d5a7708dc7c
SHA256c4d16552769ca1762f6867bce85589c645ac3dc490b650083d74f853f898cfab
SHA512ef151bbe0033a2caf2d40aff74855a3f42c8171e05a11c8ce93c7039d9430482c43fe93d9164ee94839aff253cad774dbf619dde9a8af38773ca66d59ac3400e
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Filesize
60B
MD5d17fe0a3f47be24a6453e9ef58c94641
SHA16ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA25696ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA5125b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82