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Analysis
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max time kernel
119s -
max time network
125s -
platform
windows7_x64 -
resource
win7-20240903-en -
resource tags
arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system -
submitted
18/11/2024, 12:28
Behavioral task
behavioral1
Sample
7ab284291b7ad166be5463f93366f54da420d970a7d52e2e740ddf5c6574efb4.exe
Resource
win7-20240903-en
Behavioral task
behavioral2
Sample
7ab284291b7ad166be5463f93366f54da420d970a7d52e2e740ddf5c6574efb4.exe
Resource
win10v2004-20241007-en
General
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Target
7ab284291b7ad166be5463f93366f54da420d970a7d52e2e740ddf5c6574efb4.exe
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Size
56KB
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MD5
410b76ca7b805c7ad755519fb93d3740
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SHA1
97c61311b9a3633ddadd041f84aedc907eb05f3e
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SHA256
7ab284291b7ad166be5463f93366f54da420d970a7d52e2e740ddf5c6574efb4
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SHA512
9d4ca5bfc333e951809dc9038b71719bfd901e070f42dc5585ff8a58e6ea7d8a1850bfb1d7454c501f6fd88bbdafa7a42116d454e20e6db1a4a29c24db3abd3d
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SSDEEP
1536:ASFTU9xZVqGdtCfBXdi99iQTkbb4IJlqRp2OHLQU:ASFTUNVq04fBti91Tkbb8Rp2OHLQU
Malware Config
Extracted
xworm
Cactus-33152.portmap.host:33152
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Install_directory
%AppData%
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install_file
Teams.exe
Signatures
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Detect Xworm Payload 4 IoCs
resource yara_rule behavioral1/memory/584-1-0x0000000001340000-0x0000000001354000-memory.dmp family_xworm behavioral1/files/0x0003000000004ed5-10.dat family_xworm behavioral1/memory/2572-12-0x0000000000B40000-0x0000000000B54000-memory.dmp family_xworm behavioral1/memory/1568-15-0x0000000000DD0000-0x0000000000DE4000-memory.dmp family_xworm -
Xworm family
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Drops startup file 2 IoCs
description ioc Process File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Teams.lnk 7ab284291b7ad166be5463f93366f54da420d970a7d52e2e740ddf5c6574efb4.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Teams.lnk 7ab284291b7ad166be5463f93366f54da420d970a7d52e2e740ddf5c6574efb4.exe -
Executes dropped EXE 2 IoCs
pid Process 2572 Teams.exe 1568 Teams.exe -
Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-1488793075-819845221-1497111674-1000\Software\Microsoft\Windows\CurrentVersion\Run\Teams = "C:\\Users\\Admin\\AppData\\Roaming\\Teams.exe" 7ab284291b7ad166be5463f93366f54da420d970a7d52e2e740ddf5c6574efb4.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
pid Process 1800 schtasks.exe -
Suspicious use of AdjustPrivilegeToken 4 IoCs
description pid Process Token: SeDebugPrivilege 584 7ab284291b7ad166be5463f93366f54da420d970a7d52e2e740ddf5c6574efb4.exe Token: SeDebugPrivilege 584 7ab284291b7ad166be5463f93366f54da420d970a7d52e2e740ddf5c6574efb4.exe Token: SeDebugPrivilege 2572 Teams.exe Token: SeDebugPrivilege 1568 Teams.exe -
Suspicious use of WriteProcessMemory 9 IoCs
description pid Process procid_target PID 584 wrote to memory of 1800 584 7ab284291b7ad166be5463f93366f54da420d970a7d52e2e740ddf5c6574efb4.exe 31 PID 584 wrote to memory of 1800 584 7ab284291b7ad166be5463f93366f54da420d970a7d52e2e740ddf5c6574efb4.exe 31 PID 584 wrote to memory of 1800 584 7ab284291b7ad166be5463f93366f54da420d970a7d52e2e740ddf5c6574efb4.exe 31 PID 2712 wrote to memory of 2572 2712 taskeng.exe 34 PID 2712 wrote to memory of 2572 2712 taskeng.exe 34 PID 2712 wrote to memory of 2572 2712 taskeng.exe 34 PID 2712 wrote to memory of 1568 2712 taskeng.exe 36 PID 2712 wrote to memory of 1568 2712 taskeng.exe 36 PID 2712 wrote to memory of 1568 2712 taskeng.exe 36 -
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\7ab284291b7ad166be5463f93366f54da420d970a7d52e2e740ddf5c6574efb4.exe"C:\Users\Admin\AppData\Local\Temp\7ab284291b7ad166be5463f93366f54da420d970a7d52e2e740ddf5c6574efb4.exe"1⤵
- Drops startup file
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:584 -
C:\Windows\System32\schtasks.exe"C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "Teams" /tr "C:\Users\Admin\AppData\Roaming\Teams.exe"2⤵
- Scheduled Task/Job: Scheduled Task
PID:1800
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C:\Windows\system32\taskeng.exetaskeng.exe {68139E31-CFCC-4318-8750-A0DA74AD4514} S-1-5-21-1488793075-819845221-1497111674-1000:UPNECVIU\Admin:Interactive:[1]1⤵
- Suspicious use of WriteProcessMemory
PID:2712 -
C:\Users\Admin\AppData\Roaming\Teams.exeC:\Users\Admin\AppData\Roaming\Teams.exe2⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:2572
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C:\Users\Admin\AppData\Roaming\Teams.exeC:\Users\Admin\AppData\Roaming\Teams.exe2⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:1568
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Network
MITRE ATT&CK Enterprise v15
Persistence
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Scheduled Task/Job
1Scheduled Task
1Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
56KB
MD5410b76ca7b805c7ad755519fb93d3740
SHA197c61311b9a3633ddadd041f84aedc907eb05f3e
SHA2567ab284291b7ad166be5463f93366f54da420d970a7d52e2e740ddf5c6574efb4
SHA5129d4ca5bfc333e951809dc9038b71719bfd901e070f42dc5585ff8a58e6ea7d8a1850bfb1d7454c501f6fd88bbdafa7a42116d454e20e6db1a4a29c24db3abd3d