Analysis
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max time kernel
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max time network
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platform
windows10-2004_x64 -
resource
win10v2004-20241007-en -
resource tags
arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system -
submitted
23-10-2024 01:02
Static task
static1
Behavioral task
behavioral1
Sample
Tax Returns Of R38,765.js
Resource
win7-20240903-en
Behavioral task
behavioral2
Sample
Tax Returns Of R38,765.js
Resource
win10v2004-20241007-en
General
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Target
Tax Returns Of R38,765.js
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Size
211KB
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MD5
e947528c147eb16988daa321ae3cd7ea
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SHA1
3d8b74f4215266a55a81c2024af8748357250c62
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SHA256
9f447130d0bfc9381af846b22967c76537b8ebf452c241c1b78c1e55ce50843e
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SHA512
5ebd763f9a1461b05b5b78f46b865e6e086442480540e22914b3f496e226243a350533f5081bd7bb33f9d4763107c0caa12d97cfff521839763dfc13f63f0b8e
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SSDEEP
6144:DQBDS9zYBtO2eZxZZjk88ZNTJrpXrZgZkm:kBsexILyLlFrZQ
Malware Config
Signatures
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Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
wscript.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\Control Panel\International\Geo\Nation wscript.exe -
Drops startup file 1 IoCs
Processes:
java.exedescription ioc process File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\mwztumcodt.txt java.exe -
Loads dropped DLL 2 IoCs
Processes:
java.exejava.exepid process 1432 java.exe 4444 java.exe -
Adds Run key to start application 2 TTPs 2 IoCs
Processes:
java.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\mwztumcodt = "\"C:\\Program Files\\Java\\jre-1.8\\bin\\javaw.exe\" -jar \"C:\\Users\\Admin\\AppData\\Roaming\\mwztumcodt.txt\"" java.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\mwztumcodt = "\"C:\\Program Files\\Java\\jre-1.8\\bin\\javaw.exe\" -jar \"C:\\Users\\Admin\\AppData\\Roaming\\mwztumcodt.txt\"" java.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.
Processes:
flow ioc 56 ip-api.com -
Command and Scripting Interpreter: JavaScript 1 TTPs
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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.
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Suspicious use of AdjustPrivilegeToken 64 IoCs
Processes:
WMIC.exeWMIC.exedescription pid process Token: SeIncreaseQuotaPrivilege 1112 WMIC.exe Token: SeSecurityPrivilege 1112 WMIC.exe Token: SeTakeOwnershipPrivilege 1112 WMIC.exe Token: SeLoadDriverPrivilege 1112 WMIC.exe Token: SeSystemProfilePrivilege 1112 WMIC.exe Token: SeSystemtimePrivilege 1112 WMIC.exe Token: SeProfSingleProcessPrivilege 1112 WMIC.exe Token: SeIncBasePriorityPrivilege 1112 WMIC.exe Token: SeCreatePagefilePrivilege 1112 WMIC.exe Token: SeBackupPrivilege 1112 WMIC.exe Token: SeRestorePrivilege 1112 WMIC.exe Token: SeShutdownPrivilege 1112 WMIC.exe Token: SeDebugPrivilege 1112 WMIC.exe Token: SeSystemEnvironmentPrivilege 1112 WMIC.exe Token: SeRemoteShutdownPrivilege 1112 WMIC.exe Token: SeUndockPrivilege 1112 WMIC.exe Token: SeManageVolumePrivilege 1112 WMIC.exe Token: 33 1112 WMIC.exe Token: 34 1112 WMIC.exe Token: 35 1112 WMIC.exe Token: 36 1112 WMIC.exe Token: SeIncreaseQuotaPrivilege 1112 WMIC.exe Token: SeSecurityPrivilege 1112 WMIC.exe Token: SeTakeOwnershipPrivilege 1112 WMIC.exe Token: SeLoadDriverPrivilege 1112 WMIC.exe Token: SeSystemProfilePrivilege 1112 WMIC.exe Token: SeSystemtimePrivilege 1112 WMIC.exe Token: SeProfSingleProcessPrivilege 1112 WMIC.exe Token: SeIncBasePriorityPrivilege 1112 WMIC.exe Token: SeCreatePagefilePrivilege 1112 WMIC.exe Token: SeBackupPrivilege 1112 WMIC.exe Token: SeRestorePrivilege 1112 WMIC.exe Token: SeShutdownPrivilege 1112 WMIC.exe Token: SeDebugPrivilege 1112 WMIC.exe Token: SeSystemEnvironmentPrivilege 1112 WMIC.exe Token: SeRemoteShutdownPrivilege 1112 WMIC.exe Token: SeUndockPrivilege 1112 WMIC.exe Token: SeManageVolumePrivilege 1112 WMIC.exe Token: 33 1112 WMIC.exe Token: 34 1112 WMIC.exe Token: 35 1112 WMIC.exe Token: 36 1112 WMIC.exe Token: SeIncreaseQuotaPrivilege 3520 WMIC.exe Token: SeSecurityPrivilege 3520 WMIC.exe Token: SeTakeOwnershipPrivilege 3520 WMIC.exe Token: SeLoadDriverPrivilege 3520 WMIC.exe Token: SeSystemProfilePrivilege 3520 WMIC.exe Token: SeSystemtimePrivilege 3520 WMIC.exe Token: SeProfSingleProcessPrivilege 3520 WMIC.exe Token: SeIncBasePriorityPrivilege 3520 WMIC.exe Token: SeCreatePagefilePrivilege 3520 WMIC.exe Token: SeBackupPrivilege 3520 WMIC.exe Token: SeRestorePrivilege 3520 WMIC.exe Token: SeShutdownPrivilege 3520 WMIC.exe Token: SeDebugPrivilege 3520 WMIC.exe Token: SeSystemEnvironmentPrivilege 3520 WMIC.exe Token: SeRemoteShutdownPrivilege 3520 WMIC.exe Token: SeUndockPrivilege 3520 WMIC.exe Token: SeManageVolumePrivilege 3520 WMIC.exe Token: 33 3520 WMIC.exe Token: 34 3520 WMIC.exe Token: 35 3520 WMIC.exe Token: 36 3520 WMIC.exe Token: SeIncreaseQuotaPrivilege 3520 WMIC.exe -
Suspicious use of WriteProcessMemory 26 IoCs
Processes:
wscript.exejavaw.exejava.execmd.exejava.execmd.execmd.execmd.execmd.exedescription pid process target process PID 4588 wrote to memory of 1484 4588 wscript.exe javaw.exe PID 4588 wrote to memory of 1484 4588 wscript.exe javaw.exe PID 1484 wrote to memory of 1432 1484 javaw.exe java.exe PID 1484 wrote to memory of 1432 1484 javaw.exe java.exe PID 1432 wrote to memory of 3436 1432 java.exe cmd.exe PID 1432 wrote to memory of 3436 1432 java.exe cmd.exe PID 1432 wrote to memory of 4444 1432 java.exe java.exe PID 1432 wrote to memory of 4444 1432 java.exe java.exe PID 3436 wrote to memory of 3216 3436 cmd.exe schtasks.exe PID 3436 wrote to memory of 3216 3436 cmd.exe schtasks.exe PID 4444 wrote to memory of 4932 4444 java.exe cmd.exe PID 4444 wrote to memory of 4932 4444 java.exe cmd.exe PID 4932 wrote to memory of 1112 4932 cmd.exe WMIC.exe PID 4932 wrote to memory of 1112 4932 cmd.exe WMIC.exe PID 4444 wrote to memory of 5024 4444 java.exe cmd.exe PID 4444 wrote to memory of 5024 4444 java.exe cmd.exe PID 5024 wrote to memory of 3520 5024 cmd.exe WMIC.exe PID 5024 wrote to memory of 3520 5024 cmd.exe WMIC.exe PID 4444 wrote to memory of 636 4444 java.exe cmd.exe PID 4444 wrote to memory of 636 4444 java.exe cmd.exe PID 636 wrote to memory of 1296 636 cmd.exe WMIC.exe PID 636 wrote to memory of 1296 636 cmd.exe WMIC.exe PID 4444 wrote to memory of 1544 4444 java.exe cmd.exe PID 4444 wrote to memory of 1544 4444 java.exe cmd.exe PID 1544 wrote to memory of 1092 1544 cmd.exe WMIC.exe PID 1544 wrote to memory of 1092 1544 cmd.exe WMIC.exe -
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:\Windows\system32\wscript.exewscript.exe "C:\Users\Admin\AppData\Local\Temp\Tax Returns Of R38,765.js"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4588 -
C:\Program Files\Java\jre-1.8\bin\javaw.exe"C:\Program Files\Java\jre-1.8\bin\javaw.exe" -jar "C:\Users\Admin\AppData\Roaming\mwztumcodt.txt"2⤵
- Suspicious use of WriteProcessMemory
PID:1484 -
C:\Program Files\Java\jre-1.8\bin\java.exe"C:\Program Files\Java\jre-1.8\bin\java.exe" -jar "C:\Users\Admin\mwztumcodt.txt"3⤵
- Drops startup file
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1432 -
C:\Windows\SYSTEM32\cmd.execmd /c schtasks /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Roaming\mwztumcodt.txt"4⤵
- Suspicious use of WriteProcessMemory
PID:3436 -
C:\Windows\system32\schtasks.exeschtasks /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Roaming\mwztumcodt.txt"5⤵
- Scheduled Task/Job: Scheduled Task
PID:3216
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C:\Program Files\Java\jre-1.8\bin\java.exe"C:\Program Files\Java\jre-1.8\bin\java.exe" -jar "C:\Users\Admin\AppData\Roaming\mwztumcodt.txt"4⤵
- Loads dropped DLL
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:4444 -
C:\Windows\SYSTEM32\cmd.execmd.exe /c "wmic /node:. /namespace:'\\root\cimv2' path win32_logicaldisk get volumeserialnumber /format:list"5⤵
- Suspicious use of WriteProcessMemory
PID:4932 -
C:\Windows\System32\Wbem\WMIC.exewmic /node:. /namespace:'\\root\cimv2' path win32_logicaldisk get volumeserialnumber /format:list6⤵
- Suspicious use of AdjustPrivilegeToken
PID:1112
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C:\Windows\SYSTEM32\cmd.execmd.exe /c "wmic /node:. /namespace:'\\root\cimv2' path win32_operatingsystem get caption,OSArchitecture /format:list"5⤵
- Suspicious use of WriteProcessMemory
PID:5024 -
C:\Windows\System32\Wbem\WMIC.exewmic /node:. /namespace:'\\root\cimv2' path win32_operatingsystem get caption,OSArchitecture /format:list6⤵
- Suspicious use of AdjustPrivilegeToken
PID:3520
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C:\Windows\SYSTEM32\cmd.execmd.exe /c "wmic /node:. /namespace:'\\root\cimv2' path win32_operatingsystem get version /format:list"5⤵
- Suspicious use of WriteProcessMemory
PID:636 -
C:\Windows\System32\Wbem\WMIC.exewmic /node:. /namespace:'\\root\cimv2' path win32_operatingsystem get version /format:list6⤵PID:1296
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C:\Windows\SYSTEM32\cmd.execmd.exe /c "wmic /node:localhost /namespace:'\\root\securitycenter2' path antivirusproduct get displayname /format:list"5⤵
- Suspicious use of WriteProcessMemory
PID:1544 -
C:\Windows\System32\Wbem\WMIC.exewmic /node:localhost /namespace:'\\root\securitycenter2' path antivirusproduct get displayname /format:list6⤵PID:1092
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Network
MITRE ATT&CK Enterprise v15
Execution
Command and Scripting Interpreter
1JavaScript
1Scheduled Task/Job
1Scheduled Task
1Persistence
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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MD5
d41d8cd98f00b204e9800998ecf8427e
SHA1da39a3ee5e6b4b0d3255bfef95601890afd80709
SHA256e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855
SHA512cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e
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Filesize
241KB
MD5e02979ecd43bcc9061eb2b494ab5af50
SHA13122ac0e751660f646c73b10c4f79685aa65c545
SHA256a66959bec2ef5af730198db9f3b3f7cab0d4ae70ce01bec02bf1d738e6d1ee7a
SHA5121e6f7dcb6a557c9b896412a48dd017c16f7a52fa2b9ab513593c9ecd118e86083979821ca7a3e2f098ee349200c823c759cec6599740dd391cb5f354dc29b372
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C:\Users\Admin\AppData\Roaming\Microsoft\Crypto\RSA\S-1-5-21-3227495264-2217614367-4027411560-1000\83aa4cc77f591dfc2374580bbd95f6ba_423fd5c7-8559-4b8c-bf1f-c9d05c9f0fd3
Filesize45B
MD5c8366ae350e7019aefc9d1e6e6a498c6
SHA15731d8a3e6568a5f2dfbbc87e3db9637df280b61
SHA25611e6aca8e682c046c83b721eeb5c72c5ef03cb5936c60df6f4993511ddc61238
SHA51233c980d5a638bfc791de291ebf4b6d263b384247ab27f261a54025108f2f85374b579a026e545f81395736dd40fa4696f2163ca17640dd47f1c42bc9971b18cd
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Filesize
92KB
MD52543beb989715570292d7263b60bab1a
SHA1ebb68838c9ce8f235349c2616bdd65f294b271ee
SHA2563ec814fcff2491c0863b5d5e5e26af3799bae70bc7fa4768cb5fbac74f0e0cab
SHA512c47b6f843bcc4906b03e011b0405b4bfb3bb65422e14fd6dd8bc7bc4975e055d5e93a3562c0031dcb065649d82b8e5ca30cf1279044bea572eb5c9ee30a264db
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Filesize
1.4MB
MD5acfb5b5fd9ee10bf69497792fd469f85
SHA10e0845217c4907822403912ad6828d8e0b256208
SHA256b308faebfe4ed409de8410e0a632d164b2126b035f6eacff968d3908cafb4d9e
SHA512e52575f58a195ceb3bd16b9740eadf5bc5b1d4d63c0734e8e5fd1d1776aa2d068d2e4c7173b83803f95f72c0a6759ae1c9b65773c734250d4cfcdf47a19f82aa
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Filesize
2.6MB
MD52f4a99c2758e72ee2b59a73586a2322f
SHA1af38e7c4d0fc73c23ecd785443705bfdee5b90bf
SHA25624d81621f82ac29fcdd9a74116031f5907a2343158e616f4573bbfa2434ae0d5
SHA512b860459a0d3bf7ccb600a03aa1d2ac0358619ee89b2b96ed723541e182b6fdab53aefef7992acb4e03fca67aa47cbe3907b1e6060a60b57ed96c4e00c35c7494
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Filesize
4.1MB
MD5b33387e15ab150a7bf560abdc73c3bec
SHA166b8075784131f578ef893fd7674273f709b9a4c
SHA2562eae3dea1c3dde6104c49f9601074b6038ff6abcf3be23f4b56f6720a4f6a491
SHA51225cfb0d6ce35d0bcb18527d3aa12c63ecb2d9c1b8b78805d1306e516c13480b79bb0d74730aa93bd1752f9ac2da9fdd51781c48844cea2fd52a06c62852c8279
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Filesize
772KB
MD5e1aa38a1e78a76a6de73efae136cdb3a
SHA1c463da71871f780b2e2e5dba115d43953b537daf
SHA2562ddda8af6faef8bde46acf43ec546603180bcf8dcb2e5591fff8ac9cd30b5609
SHA512fee16fe9364926ec337e52f551fd62ed81984808a847de2fd68ff29b6c5da0dcc04ef6d8977f0fe675662a7d2ea1065cdcdd2a5259446226a7c7c5516bd7d60d