Analysis
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max time kernel
149s -
max time network
154s -
platform
windows10-2004_x64 -
resource
win10v2004-20241007-en -
resource tags
arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system -
submitted
22-10-2024 13:24
Static task
static1
Behavioral task
behavioral1
Sample
Tax Returns Of R38,765.js
Resource
win7-20241010-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.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000\Control Panel\International\Geo\Nation wscript.exe -
Drops startup file 1 IoCs
description ioc Process File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\ezxbohlosk.txt java.exe -
Loads dropped DLL 2 IoCs
pid Process 1444 java.exe 5000 java.exe -
Adds Run key to start application 2 TTPs 2 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ezxbohlosk = "\"C:\\Program Files\\Java\\jre-1.8\\bin\\javaw.exe\" -jar \"C:\\Users\\Admin\\AppData\\Roaming\\ezxbohlosk.txt\"" java.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ezxbohlosk = "\"C:\\Program Files\\Java\\jre-1.8\\bin\\javaw.exe\" -jar \"C:\\Users\\Admin\\AppData\\Roaming\\ezxbohlosk.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.
flow ioc 38 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.
pid Process 3300 schtasks.exe -
Suspicious use of AdjustPrivilegeToken 64 IoCs
description pid Process Token: SeIncreaseQuotaPrivilege 456 WMIC.exe Token: SeSecurityPrivilege 456 WMIC.exe Token: SeTakeOwnershipPrivilege 456 WMIC.exe Token: SeLoadDriverPrivilege 456 WMIC.exe Token: SeSystemProfilePrivilege 456 WMIC.exe Token: SeSystemtimePrivilege 456 WMIC.exe Token: SeProfSingleProcessPrivilege 456 WMIC.exe Token: SeIncBasePriorityPrivilege 456 WMIC.exe Token: SeCreatePagefilePrivilege 456 WMIC.exe Token: SeBackupPrivilege 456 WMIC.exe Token: SeRestorePrivilege 456 WMIC.exe Token: SeShutdownPrivilege 456 WMIC.exe Token: SeDebugPrivilege 456 WMIC.exe Token: SeSystemEnvironmentPrivilege 456 WMIC.exe Token: SeRemoteShutdownPrivilege 456 WMIC.exe Token: SeUndockPrivilege 456 WMIC.exe Token: SeManageVolumePrivilege 456 WMIC.exe Token: 33 456 WMIC.exe Token: 34 456 WMIC.exe Token: 35 456 WMIC.exe Token: 36 456 WMIC.exe Token: SeIncreaseQuotaPrivilege 456 WMIC.exe Token: SeSecurityPrivilege 456 WMIC.exe Token: SeTakeOwnershipPrivilege 456 WMIC.exe Token: SeLoadDriverPrivilege 456 WMIC.exe Token: SeSystemProfilePrivilege 456 WMIC.exe Token: SeSystemtimePrivilege 456 WMIC.exe Token: SeProfSingleProcessPrivilege 456 WMIC.exe Token: SeIncBasePriorityPrivilege 456 WMIC.exe Token: SeCreatePagefilePrivilege 456 WMIC.exe Token: SeBackupPrivilege 456 WMIC.exe Token: SeRestorePrivilege 456 WMIC.exe Token: SeShutdownPrivilege 456 WMIC.exe Token: SeDebugPrivilege 456 WMIC.exe Token: SeSystemEnvironmentPrivilege 456 WMIC.exe Token: SeRemoteShutdownPrivilege 456 WMIC.exe Token: SeUndockPrivilege 456 WMIC.exe Token: SeManageVolumePrivilege 456 WMIC.exe Token: 33 456 WMIC.exe Token: 34 456 WMIC.exe Token: 35 456 WMIC.exe Token: 36 456 WMIC.exe Token: SeIncreaseQuotaPrivilege 3248 WMIC.exe Token: SeSecurityPrivilege 3248 WMIC.exe Token: SeTakeOwnershipPrivilege 3248 WMIC.exe Token: SeLoadDriverPrivilege 3248 WMIC.exe Token: SeSystemProfilePrivilege 3248 WMIC.exe Token: SeSystemtimePrivilege 3248 WMIC.exe Token: SeProfSingleProcessPrivilege 3248 WMIC.exe Token: SeIncBasePriorityPrivilege 3248 WMIC.exe Token: SeCreatePagefilePrivilege 3248 WMIC.exe Token: SeBackupPrivilege 3248 WMIC.exe Token: SeRestorePrivilege 3248 WMIC.exe Token: SeShutdownPrivilege 3248 WMIC.exe Token: SeDebugPrivilege 3248 WMIC.exe Token: SeSystemEnvironmentPrivilege 3248 WMIC.exe Token: SeRemoteShutdownPrivilege 3248 WMIC.exe Token: SeUndockPrivilege 3248 WMIC.exe Token: SeManageVolumePrivilege 3248 WMIC.exe Token: 33 3248 WMIC.exe Token: 34 3248 WMIC.exe Token: 35 3248 WMIC.exe Token: 36 3248 WMIC.exe Token: SeIncreaseQuotaPrivilege 3248 WMIC.exe -
Suspicious use of WriteProcessMemory 26 IoCs
description pid Process procid_target PID 4484 wrote to memory of 1936 4484 wscript.exe 84 PID 4484 wrote to memory of 1936 4484 wscript.exe 84 PID 1936 wrote to memory of 1444 1936 javaw.exe 93 PID 1936 wrote to memory of 1444 1936 javaw.exe 93 PID 1444 wrote to memory of 4040 1444 java.exe 97 PID 1444 wrote to memory of 4040 1444 java.exe 97 PID 1444 wrote to memory of 5000 1444 java.exe 98 PID 1444 wrote to memory of 5000 1444 java.exe 98 PID 4040 wrote to memory of 3300 4040 cmd.exe 101 PID 4040 wrote to memory of 3300 4040 cmd.exe 101 PID 5000 wrote to memory of 436 5000 java.exe 107 PID 5000 wrote to memory of 436 5000 java.exe 107 PID 436 wrote to memory of 456 436 cmd.exe 109 PID 436 wrote to memory of 456 436 cmd.exe 109 PID 5000 wrote to memory of 2172 5000 java.exe 110 PID 5000 wrote to memory of 2172 5000 java.exe 110 PID 2172 wrote to memory of 3248 2172 cmd.exe 112 PID 2172 wrote to memory of 3248 2172 cmd.exe 112 PID 5000 wrote to memory of 336 5000 java.exe 113 PID 5000 wrote to memory of 336 5000 java.exe 113 PID 336 wrote to memory of 1388 336 cmd.exe 115 PID 336 wrote to memory of 1388 336 cmd.exe 115 PID 5000 wrote to memory of 4912 5000 java.exe 116 PID 5000 wrote to memory of 4912 5000 java.exe 116 PID 4912 wrote to memory of 1804 4912 cmd.exe 118 PID 4912 wrote to memory of 1804 4912 cmd.exe 118 -
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:4484 -
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\ezxbohlosk.txt"2⤵
- Suspicious use of WriteProcessMemory
PID:1936 -
C:\Program Files\Java\jre-1.8\bin\java.exe"C:\Program Files\Java\jre-1.8\bin\java.exe" -jar "C:\Users\Admin\ezxbohlosk.txt"3⤵
- Drops startup file
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1444 -
C:\Windows\SYSTEM32\cmd.execmd /c schtasks /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Roaming\ezxbohlosk.txt"4⤵
- Suspicious use of WriteProcessMemory
PID:4040 -
C:\Windows\system32\schtasks.exeschtasks /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Roaming\ezxbohlosk.txt"5⤵
- Scheduled Task/Job: Scheduled Task
PID:3300
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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\ezxbohlosk.txt"4⤵
- Loads dropped DLL
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:5000 -
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:436 -
C:\Windows\System32\Wbem\WMIC.exewmic /node:. /namespace:'\\root\cimv2' path win32_logicaldisk get volumeserialnumber /format:list6⤵
- Suspicious use of AdjustPrivilegeToken
PID:456
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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:2172 -
C:\Windows\System32\Wbem\WMIC.exewmic /node:. /namespace:'\\root\cimv2' path win32_operatingsystem get caption,OSArchitecture /format:list6⤵
- Suspicious use of AdjustPrivilegeToken
PID:3248
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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:336 -
C:\Windows\System32\Wbem\WMIC.exewmic /node:. /namespace:'\\root\cimv2' path win32_operatingsystem get version /format:list6⤵PID:1388
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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:4912 -
C:\Windows\System32\Wbem\WMIC.exewmic /node:localhost /namespace:'\\root\securitycenter2' path antivirusproduct get displayname /format:list6⤵PID:1804
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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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Filesize
241KB
MD5e02979ecd43bcc9061eb2b494ab5af50
SHA13122ac0e751660f646c73b10c4f79685aa65c545
SHA256a66959bec2ef5af730198db9f3b3f7cab0d4ae70ce01bec02bf1d738e6d1ee7a
SHA5121e6f7dcb6a557c9b896412a48dd017c16f7a52fa2b9ab513593c9ecd118e86083979821ca7a3e2f098ee349200c823c759cec6599740dd391cb5f354dc29b372
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C:\Users\Admin\AppData\Roaming\Microsoft\Crypto\RSA\S-1-5-21-2437139445-1151884604-3026847218-1000\83aa4cc77f591dfc2374580bbd95f6ba_4304acb9-c3f6-452a-9860-eb4e85d38d4e
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