Analysis
-
max time kernel
145s -
max time network
147s -
platform
windows10-2004_x64 -
resource
win10v2004-20240802-en -
resource tags
arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system -
submitted
23-09-2024 14:06
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
win10v2004-20240802-en
General
-
Target
Tax Returns of R38,765.js
-
Size
208KB
-
MD5
07a0d070e8d38905650da46f677a183f
-
SHA1
619c168ccb0a8ba75ddf6f09de13d1014c263fec
-
SHA256
2e2cd055d7e6d78706cd68ebe604e0be01e7df2df2d12a2d32ca457b5c817475
-
SHA512
7878310e5674a54aac723b586497588be058bb140193ba19edc2b44800a16208ea83a12a788c84b6b46f16fd789e581114f07904f36aa7faef24099b12c4820f
-
SSDEEP
6144:HQKcv+xEZJlC3uPVTMvXdQrjigndzr8cMhuky:w1JEeZMvCrj7Z/
Malware Config
Signatures
-
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-1-5-21-2718105630-359604950-2820636825-1000\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\cuhulljqwp.txt java.exe -
Loads dropped DLL 2 IoCs
Processes:
java.exejava.exepid process 4088 java.exe 3352 java.exe -
Adds Run key to start application 2 TTPs 2 IoCs
Processes:
java.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-2718105630-359604950-2820636825-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\cuhulljqwp = "\"C:\\Program Files\\Java\\jre-1.8\\bin\\javaw.exe\" -jar \"C:\\Users\\Admin\\AppData\\Roaming\\cuhulljqwp.txt\"" java.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\cuhulljqwp = "\"C:\\Program Files\\Java\\jre-1.8\\bin\\javaw.exe\" -jar \"C:\\Users\\Admin\\AppData\\Roaming\\cuhulljqwp.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 29 ip-api.com -
Command and Scripting Interpreter: JavaScript 1 TTPs
-
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
-
Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
-
Suspicious use of AdjustPrivilegeToken 64 IoCs
Processes:
WMIC.exeWMIC.exedescription pid process Token: SeIncreaseQuotaPrivilege 464 WMIC.exe Token: SeSecurityPrivilege 464 WMIC.exe Token: SeTakeOwnershipPrivilege 464 WMIC.exe Token: SeLoadDriverPrivilege 464 WMIC.exe Token: SeSystemProfilePrivilege 464 WMIC.exe Token: SeSystemtimePrivilege 464 WMIC.exe Token: SeProfSingleProcessPrivilege 464 WMIC.exe Token: SeIncBasePriorityPrivilege 464 WMIC.exe Token: SeCreatePagefilePrivilege 464 WMIC.exe Token: SeBackupPrivilege 464 WMIC.exe Token: SeRestorePrivilege 464 WMIC.exe Token: SeShutdownPrivilege 464 WMIC.exe Token: SeDebugPrivilege 464 WMIC.exe Token: SeSystemEnvironmentPrivilege 464 WMIC.exe Token: SeRemoteShutdownPrivilege 464 WMIC.exe Token: SeUndockPrivilege 464 WMIC.exe Token: SeManageVolumePrivilege 464 WMIC.exe Token: 33 464 WMIC.exe Token: 34 464 WMIC.exe Token: 35 464 WMIC.exe Token: 36 464 WMIC.exe Token: SeIncreaseQuotaPrivilege 464 WMIC.exe Token: SeSecurityPrivilege 464 WMIC.exe Token: SeTakeOwnershipPrivilege 464 WMIC.exe Token: SeLoadDriverPrivilege 464 WMIC.exe Token: SeSystemProfilePrivilege 464 WMIC.exe Token: SeSystemtimePrivilege 464 WMIC.exe Token: SeProfSingleProcessPrivilege 464 WMIC.exe Token: SeIncBasePriorityPrivilege 464 WMIC.exe Token: SeCreatePagefilePrivilege 464 WMIC.exe Token: SeBackupPrivilege 464 WMIC.exe Token: SeRestorePrivilege 464 WMIC.exe Token: SeShutdownPrivilege 464 WMIC.exe Token: SeDebugPrivilege 464 WMIC.exe Token: SeSystemEnvironmentPrivilege 464 WMIC.exe Token: SeRemoteShutdownPrivilege 464 WMIC.exe Token: SeUndockPrivilege 464 WMIC.exe Token: SeManageVolumePrivilege 464 WMIC.exe Token: 33 464 WMIC.exe Token: 34 464 WMIC.exe Token: 35 464 WMIC.exe Token: 36 464 WMIC.exe Token: SeIncreaseQuotaPrivilege 3972 WMIC.exe Token: SeSecurityPrivilege 3972 WMIC.exe Token: SeTakeOwnershipPrivilege 3972 WMIC.exe Token: SeLoadDriverPrivilege 3972 WMIC.exe Token: SeSystemProfilePrivilege 3972 WMIC.exe Token: SeSystemtimePrivilege 3972 WMIC.exe Token: SeProfSingleProcessPrivilege 3972 WMIC.exe Token: SeIncBasePriorityPrivilege 3972 WMIC.exe Token: SeCreatePagefilePrivilege 3972 WMIC.exe Token: SeBackupPrivilege 3972 WMIC.exe Token: SeRestorePrivilege 3972 WMIC.exe Token: SeShutdownPrivilege 3972 WMIC.exe Token: SeDebugPrivilege 3972 WMIC.exe Token: SeSystemEnvironmentPrivilege 3972 WMIC.exe Token: SeRemoteShutdownPrivilege 3972 WMIC.exe Token: SeUndockPrivilege 3972 WMIC.exe Token: SeManageVolumePrivilege 3972 WMIC.exe Token: 33 3972 WMIC.exe Token: 34 3972 WMIC.exe Token: 35 3972 WMIC.exe Token: 36 3972 WMIC.exe Token: SeIncreaseQuotaPrivilege 3972 WMIC.exe -
Suspicious use of WriteProcessMemory 26 IoCs
Processes:
wscript.exejavaw.exejava.execmd.exejava.execmd.execmd.execmd.execmd.exedescription pid process target process PID 212 wrote to memory of 4220 212 wscript.exe javaw.exe PID 212 wrote to memory of 4220 212 wscript.exe javaw.exe PID 4220 wrote to memory of 4088 4220 javaw.exe java.exe PID 4220 wrote to memory of 4088 4220 javaw.exe java.exe PID 4088 wrote to memory of 4868 4088 java.exe cmd.exe PID 4088 wrote to memory of 4868 4088 java.exe cmd.exe PID 4088 wrote to memory of 3352 4088 java.exe java.exe PID 4088 wrote to memory of 3352 4088 java.exe java.exe PID 4868 wrote to memory of 4748 4868 cmd.exe schtasks.exe PID 4868 wrote to memory of 4748 4868 cmd.exe schtasks.exe PID 3352 wrote to memory of 3900 3352 java.exe cmd.exe PID 3352 wrote to memory of 3900 3352 java.exe cmd.exe PID 3900 wrote to memory of 464 3900 cmd.exe WMIC.exe PID 3900 wrote to memory of 464 3900 cmd.exe WMIC.exe PID 3352 wrote to memory of 940 3352 java.exe cmd.exe PID 3352 wrote to memory of 940 3352 java.exe cmd.exe PID 940 wrote to memory of 3972 940 cmd.exe WMIC.exe PID 940 wrote to memory of 3972 940 cmd.exe WMIC.exe PID 3352 wrote to memory of 4532 3352 java.exe cmd.exe PID 3352 wrote to memory of 4532 3352 java.exe cmd.exe PID 4532 wrote to memory of 1752 4532 cmd.exe WMIC.exe PID 4532 wrote to memory of 1752 4532 cmd.exe WMIC.exe PID 3352 wrote to memory of 4580 3352 java.exe cmd.exe PID 3352 wrote to memory of 4580 3352 java.exe cmd.exe PID 4580 wrote to memory of 1080 4580 cmd.exe WMIC.exe PID 4580 wrote to memory of 1080 4580 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
-
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:212 -
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\cuhulljqwp.txt"2⤵
- Suspicious use of WriteProcessMemory
PID:4220 -
C:\Program Files\Java\jre-1.8\bin\java.exe"C:\Program Files\Java\jre-1.8\bin\java.exe" -jar "C:\Users\Admin\cuhulljqwp.txt"3⤵
- Drops startup file
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:4088 -
C:\Windows\SYSTEM32\cmd.execmd /c schtasks /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Roaming\cuhulljqwp.txt"4⤵
- Suspicious use of WriteProcessMemory
PID:4868 -
C:\Windows\system32\schtasks.exeschtasks /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Roaming\cuhulljqwp.txt"5⤵
- Scheduled Task/Job: Scheduled Task
PID:4748
-
-
-
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\cuhulljqwp.txt"4⤵
- Loads dropped DLL
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:3352 -
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:3900 -
C:\Windows\System32\Wbem\WMIC.exewmic /node:. /namespace:'\\root\cimv2' path win32_logicaldisk get volumeserialnumber /format:list6⤵
- Suspicious use of AdjustPrivilegeToken
PID:464
-
-
-
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:940 -
C:\Windows\System32\Wbem\WMIC.exewmic /node:. /namespace:'\\root\cimv2' path win32_operatingsystem get caption,OSArchitecture /format:list6⤵
- Suspicious use of AdjustPrivilegeToken
PID:3972
-
-
-
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:4532 -
C:\Windows\System32\Wbem\WMIC.exewmic /node:. /namespace:'\\root\cimv2' path win32_operatingsystem get version /format:list6⤵PID:1752
-
-
-
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:4580 -
C:\Windows\System32\Wbem\WMIC.exewmic /node:localhost /namespace:'\\root\securitycenter2' path antivirusproduct get displayname /format:list6⤵PID:1080
-
-
-
-
-
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
-
MD5
d41d8cd98f00b204e9800998ecf8427e
SHA1da39a3ee5e6b4b0d3255bfef95601890afd80709
SHA256e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855
SHA512cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e
-
Filesize
46B
MD50003bd84ad42c4c572c0e3877e5dfa97
SHA19998eee2942aa006cfb438f7f0443feddc73fe0c
SHA2565dc07ecfc22fc526c3f1736d8254b53684cc174a2cf6e510dce23c92ae3a9e96
SHA512f4dfc9c465c4d11f977833a0c7363718b2da2338b12380c046227b6788ce55130a5d723c1575198acb546276d2bfd6c122db010ec993abf02ff50b1af3552ac4
-
Filesize
241KB
MD5e02979ecd43bcc9061eb2b494ab5af50
SHA13122ac0e751660f646c73b10c4f79685aa65c545
SHA256a66959bec2ef5af730198db9f3b3f7cab0d4ae70ce01bec02bf1d738e6d1ee7a
SHA5121e6f7dcb6a557c9b896412a48dd017c16f7a52fa2b9ab513593c9ecd118e86083979821ca7a3e2f098ee349200c823c759cec6599740dd391cb5f354dc29b372
-
C:\Users\Admin\AppData\Roaming\Microsoft\Crypto\RSA\S-1-5-21-2718105630-359604950-2820636825-1000\83aa4cc77f591dfc2374580bbd95f6ba_32404286-a0b5-4a93-9620-6f13fd83251a
Filesize45B
MD5c8366ae350e7019aefc9d1e6e6a498c6
SHA15731d8a3e6568a5f2dfbbc87e3db9637df280b61
SHA25611e6aca8e682c046c83b721eeb5c72c5ef03cb5936c60df6f4993511ddc61238
SHA51233c980d5a638bfc791de291ebf4b6d263b384247ab27f261a54025108f2f85374b579a026e545f81395736dd40fa4696f2163ca17640dd47f1c42bc9971b18cd
-
Filesize
92KB
MD52cc7e15396dc275497fcf51f461da38d
SHA16fa0f11b6d9e3812a86ff1d43a86ad34bfc41062
SHA256e14f1c7e11a1f1ddd570d605e4204a694a7370d603c1b1ca157e505f180ccc48
SHA512daf71473c48f9592d33a49ff2f6d7b84e2c3a992f18a29979494cae86623328f0137c6ae9046cf3bbeb75d90d2a030d1fdbf3aca8718ea769429ce1e6e4a931f
-
Filesize
1.4MB
MD5acfb5b5fd9ee10bf69497792fd469f85
SHA10e0845217c4907822403912ad6828d8e0b256208
SHA256b308faebfe4ed409de8410e0a632d164b2126b035f6eacff968d3908cafb4d9e
SHA512e52575f58a195ceb3bd16b9740eadf5bc5b1d4d63c0734e8e5fd1d1776aa2d068d2e4c7173b83803f95f72c0a6759ae1c9b65773c734250d4cfcdf47a19f82aa
-
Filesize
2.6MB
MD52f4a99c2758e72ee2b59a73586a2322f
SHA1af38e7c4d0fc73c23ecd785443705bfdee5b90bf
SHA25624d81621f82ac29fcdd9a74116031f5907a2343158e616f4573bbfa2434ae0d5
SHA512b860459a0d3bf7ccb600a03aa1d2ac0358619ee89b2b96ed723541e182b6fdab53aefef7992acb4e03fca67aa47cbe3907b1e6060a60b57ed96c4e00c35c7494
-
Filesize
4.1MB
MD5b33387e15ab150a7bf560abdc73c3bec
SHA166b8075784131f578ef893fd7674273f709b9a4c
SHA2562eae3dea1c3dde6104c49f9601074b6038ff6abcf3be23f4b56f6720a4f6a491
SHA51225cfb0d6ce35d0bcb18527d3aa12c63ecb2d9c1b8b78805d1306e516c13480b79bb0d74730aa93bd1752f9ac2da9fdd51781c48844cea2fd52a06c62852c8279
-
Filesize
772KB
MD5e1aa38a1e78a76a6de73efae136cdb3a
SHA1c463da71871f780b2e2e5dba115d43953b537daf
SHA2562ddda8af6faef8bde46acf43ec546603180bcf8dcb2e5591fff8ac9cd30b5609
SHA512fee16fe9364926ec337e52f551fd62ed81984808a847de2fd68ff29b6c5da0dcc04ef6d8977f0fe675662a7d2ea1065cdcdd2a5259446226a7c7c5516bd7d60d