strrat | e4bc1b6f2e541e90a1ed736284d2e383fcb739f10466b1fdd390211e01ed4dae

Analysis

max time kernel
150s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
09/06/2024, 01:53

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General

Target
e4bc1b6f2e541e90a1ed736284d2e383fcb739f10466b1fdd390211e01ed4dae.jar
Size 123KB
Sample240609-ca144sce72
SHA256 e4bc1b6f2e541e90a1ed736284d2e383fcb739f10466b1fdd390211e01ed4dae
MD5 6a6bcf5dbe9ee0e68969958ca3565122
SHA1 c515cd6309bdff8f1b7b996f0846eae3ea27b768
SHA512 2dc5021ce4e033a1ae67ec2905b3acb7b237c3a00bebe54b030f461675ceb570e738743348a889ea3400b7d01e6261edb5d835c4759914960ae29cbba98a00a6
SSDEEP 3072:4+1ksmuRo+BmpH7Rx/inqhzlE0EP5vdRGXVIJeouw:2sHbmpRgnqhzPEP5vbGXiuw
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

strrat discovery execution persistence stealer trojan

Malware Config

Signatures

STRRAT
STRRAT is a remote access tool than can steal credentials and log keystrokes.
trojan stealer strrat

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-4018855536-2201274732-320770143-1000\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\rmfncoown.txt	java.exe

Loads dropped DLL 2 IoCs

pid	Process
4224	java.exe
3852	java.exe

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
1544	icacls.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-4018855536-2201274732-320770143-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\rmfncoown = "\"C:\\Users\\Admin\\AppData\\Roaming\\rmfncoown.txt\""	java.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\rmfncoown = "\"C:\\Users\\Admin\\AppData\\Roaming\\rmfncoown.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
28	ip-api.com

Command and Scripting Interpreter: JavaScript 1 TTPs
execution

JavaScript
T1059.007
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Creates scheduled task(s) 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence

Scheduled Task/Job

T1053

pid	Process
2364	schtasks.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	1660	WMIC.exe
Token: SeSecurityPrivilege	1660	WMIC.exe
Token: SeTakeOwnershipPrivilege	1660	WMIC.exe
Token: SeLoadDriverPrivilege	1660	WMIC.exe
Token: SeSystemProfilePrivilege	1660	WMIC.exe
Token: SeSystemtimePrivilege	1660	WMIC.exe
Token: SeProfSingleProcessPrivilege	1660	WMIC.exe
Token: SeIncBasePriorityPrivilege	1660	WMIC.exe
Token: SeCreatePagefilePrivilege	1660	WMIC.exe
Token: SeBackupPrivilege	1660	WMIC.exe
Token: SeRestorePrivilege	1660	WMIC.exe
Token: SeShutdownPrivilege	1660	WMIC.exe
Token: SeDebugPrivilege	1660	WMIC.exe
Token: SeSystemEnvironmentPrivilege	1660	WMIC.exe
Token: SeRemoteShutdownPrivilege	1660	WMIC.exe
Token: SeUndockPrivilege	1660	WMIC.exe
Token: SeManageVolumePrivilege	1660	WMIC.exe
Token: 33	1660	WMIC.exe
Token: 34	1660	WMIC.exe
Token: 35	1660	WMIC.exe
Token: 36	1660	WMIC.exe
Token: SeIncreaseQuotaPrivilege	1660	WMIC.exe
Token: SeSecurityPrivilege	1660	WMIC.exe
Token: SeTakeOwnershipPrivilege	1660	WMIC.exe
Token: SeLoadDriverPrivilege	1660	WMIC.exe
Token: SeSystemProfilePrivilege	1660	WMIC.exe
Token: SeSystemtimePrivilege	1660	WMIC.exe
Token: SeProfSingleProcessPrivilege	1660	WMIC.exe
Token: SeIncBasePriorityPrivilege	1660	WMIC.exe
Token: SeCreatePagefilePrivilege	1660	WMIC.exe
Token: SeBackupPrivilege	1660	WMIC.exe
Token: SeRestorePrivilege	1660	WMIC.exe
Token: SeShutdownPrivilege	1660	WMIC.exe
Token: SeDebugPrivilege	1660	WMIC.exe
Token: SeSystemEnvironmentPrivilege	1660	WMIC.exe
Token: SeRemoteShutdownPrivilege	1660	WMIC.exe
Token: SeUndockPrivilege	1660	WMIC.exe
Token: SeManageVolumePrivilege	1660	WMIC.exe
Token: 33	1660	WMIC.exe
Token: 34	1660	WMIC.exe
Token: 35	1660	WMIC.exe
Token: 36	1660	WMIC.exe
Token: SeIncreaseQuotaPrivilege	4888	WMIC.exe
Token: SeSecurityPrivilege	4888	WMIC.exe
Token: SeTakeOwnershipPrivilege	4888	WMIC.exe
Token: SeLoadDriverPrivilege	4888	WMIC.exe
Token: SeSystemProfilePrivilege	4888	WMIC.exe
Token: SeSystemtimePrivilege	4888	WMIC.exe
Token: SeProfSingleProcessPrivilege	4888	WMIC.exe
Token: SeIncBasePriorityPrivilege	4888	WMIC.exe
Token: SeCreatePagefilePrivilege	4888	WMIC.exe
Token: SeBackupPrivilege	4888	WMIC.exe
Token: SeRestorePrivilege	4888	WMIC.exe
Token: SeShutdownPrivilege	4888	WMIC.exe
Token: SeDebugPrivilege	4888	WMIC.exe
Token: SeSystemEnvironmentPrivilege	4888	WMIC.exe
Token: SeRemoteShutdownPrivilege	4888	WMIC.exe
Token: SeUndockPrivilege	4888	WMIC.exe
Token: SeManageVolumePrivilege	4888	WMIC.exe
Token: 33	4888	WMIC.exe
Token: 34	4888	WMIC.exe
Token: 35	4888	WMIC.exe
Token: 36	4888	WMIC.exe
Token: SeIncreaseQuotaPrivilege	4888	WMIC.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2456 wrote to memory of 1544	2456	java.exe	83
PID 2456 wrote to memory of 1544	2456	java.exe	83
PID 2456 wrote to memory of 988	2456	java.exe	86
PID 2456 wrote to memory of 988	2456	java.exe	86
PID 988 wrote to memory of 924	988	wscript.exe	89
PID 988 wrote to memory of 924	988	wscript.exe	89
PID 924 wrote to memory of 4224	924	javaw.exe	94
PID 924 wrote to memory of 4224	924	javaw.exe	94
PID 4224 wrote to memory of 1072	4224	java.exe	97
PID 4224 wrote to memory of 1072	4224	java.exe	97
PID 4224 wrote to memory of 3852	4224	java.exe	98
PID 4224 wrote to memory of 3852	4224	java.exe	98
PID 1072 wrote to memory of 2364	1072	cmd.exe	101
PID 1072 wrote to memory of 2364	1072	cmd.exe	101
PID 3852 wrote to memory of 1124	3852	java.exe	102
PID 3852 wrote to memory of 1124	3852	java.exe	102
PID 1124 wrote to memory of 1660	1124	cmd.exe	104
PID 1124 wrote to memory of 1660	1124	cmd.exe	104
PID 3852 wrote to memory of 2100	3852	java.exe	105
PID 3852 wrote to memory of 2100	3852	java.exe	105
PID 2100 wrote to memory of 4888	2100	cmd.exe	107
PID 2100 wrote to memory of 4888	2100	cmd.exe	107
PID 3852 wrote to memory of 3628	3852	java.exe	108
PID 3852 wrote to memory of 3628	3852	java.exe	108
PID 3628 wrote to memory of 4928	3628	cmd.exe	110
PID 3628 wrote to memory of 4928	3628	cmd.exe	110
PID 3852 wrote to memory of 1440	3852	java.exe	111
PID 3852 wrote to memory of 1440	3852	java.exe	111
PID 1440 wrote to memory of 988	1440	cmd.exe	113
PID 1440 wrote to memory of 988	1440	cmd.exe	113

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.
persistence

Query Registry
T1012

C:\Program Files (x86)\Common Files\Oracle\Java\javapath\java.exe
java -jar C:\Users\Admin\AppData\Local\Temp\e4bc1b6f2e541e90a1ed736284d2e383fcb739f10466b1fdd390211e01ed4dae.jar
1⤵
- Suspicious use of WriteProcessMemory
PID:2456
- C:\Windows\system32\icacls.exe
  C:\Windows\system32\icacls.exe C:\ProgramData\Oracle\Java\.oracle_jre_usage /grant "everyone":(OI)(CI)M
  2⤵
  - Modifies file permissions
  PID:1544
- C:\Windows\SYSTEM32\wscript.exe
  wscript C:\Users\Admin\pzsjuirnnn.js
  2⤵
  - Checks computer location settings
  - Suspicious use of WriteProcessMemory
  PID:988
- - 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\rmfncoown.txt"
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:924
  - - C:\Program Files\Java\jre-1.8\bin\java.exe
      "C:\Program Files\Java\jre-1.8\bin\java.exe" -jar "C:\Users\Admin\rmfncoown.txt"
      4⤵
      Drops startup file
      Loads dropped DLL
      Adds Run key to start application
      Suspicious use of WriteProcessMemory
      PID:4224
    - - C:\Windows\SYSTEM32\cmd.exe
        
        cmd /c schtasks /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Roaming\rmfncoown.txt"
        5⤵
        Suspicious use of WriteProcessMemory
        
        PID:1072
      - C:\Windows\system32\schtasks.exe
        
        schtasks /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Roaming\rmfncoown.txt"
        6⤵
        Creates scheduled task(s)
        
        PID:2364
    - - 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\rmfncoown.txt"
        5⤵
        Loads dropped DLL
        Suspicious use of WriteProcessMemory
        
        PID:3852
      - C:\Windows\SYSTEM32\cmd.exe
        
        cmd.exe /c "wmic /node:. /namespace:'\\root\cimv2' path win32_logicaldisk get volumeserialnumber /format:list"
        6⤵
        Suspicious use of WriteProcessMemory
        
        PID:1124
        
        C:\Windows\System32\Wbem\WMIC.exe
        
        wmic /node:. /namespace:'\\root\cimv2' path win32_logicaldisk get volumeserialnumber /format:list
        7⤵
        Suspicious use of AdjustPrivilegeToken
        
        PID:1660
      - C:\Windows\SYSTEM32\cmd.exe
        
        cmd.exe /c "wmic /node:. /namespace:'\\root\cimv2' path win32_operatingsystem get caption,OSArchitecture /format:list"
        6⤵
        Suspicious use of WriteProcessMemory
        
        PID:2100
        
        C:\Windows\System32\Wbem\WMIC.exe
        
        wmic /node:. /namespace:'\\root\cimv2' path win32_operatingsystem get caption,OSArchitecture /format:list
        7⤵
        Suspicious use of AdjustPrivilegeToken
        
        PID:4888
      - C:\Windows\SYSTEM32\cmd.exe
        
        cmd.exe /c "wmic /node:. /namespace:'\\root\cimv2' path win32_operatingsystem get version /format:list"
        6⤵
        Suspicious use of WriteProcessMemory
        
        PID:3628
        
        C:\Windows\System32\Wbem\WMIC.exe
        
        wmic /node:. /namespace:'\\root\cimv2' path win32_operatingsystem get version /format:list
        7⤵
        
        PID:4928
      - C:\Windows\SYSTEM32\cmd.exe
        
        cmd.exe /c "wmic /node:localhost /namespace:'\\root\securitycenter2' path antivirusproduct get displayname /format:list"
        6⤵
        Suspicious use of WriteProcessMemory
        
        PID:1440
        
        C:\Windows\System32\Wbem\WMIC.exe
        
        wmic /node:localhost /namespace:'\\root\securitycenter2' path antivirusproduct get displayname /format:list
        7⤵
        
        PID:988

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

JavaScript

T1059.007

Scheduled Task/Job

T1053

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Defense Evasion

File and Directory Permissions Modification

T1222

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

3903daac9bc4a3b7.timestamp

Path C:\ProgramData\Oracle\Java\.oracle_jre_usage\3903daac9bc4a3b7.timestamp
Size 46B
SHA256 04630f9fa3a9133aefa35b781bdfa95c441ad61f5108519831f08b07a9e4fcdc
MD5 61412f9d6d4cc747b7d16421bf49644e
SHA1 bf8345f4e06343cdf7c6fdbde75076515d6c7bb4
SHA512 2012f1856b3a09d79efe5f46aedd34d037c715e660abb4e773d235b588ab4e69a533191f955e613269dc5d4442aec94eda99492e2b5ea9bdbfc689487cd27741
MD5 SHA1 SHA512

Submit Download

jna7572206638408562484.dll

Path C:\Users\Admin\AppData\Local\Temp\jna-63116079\jna7572206638408562484.dll
Size 241KB
SHA256 a66959bec2ef5af730198db9f3b3f7cab0d4ae70ce01bec02bf1d738e6d1ee7a
MD5 e02979ecd43bcc9061eb2b494ab5af50
SHA1 3122ac0e751660f646c73b10c4f79685aa65c545
SHA512 1e6f7dcb6a557c9b896412a48dd017c16f7a52fa2b9ab513593c9ecd118e86083979821ca7a3e2f098ee349200c823c759cec6599740dd391cb5f354dc29b372
SSDEEP 6144:YW2uuBVCg2ZF0xk5udHB7EkAgEEz2Lh2LDh+MDWHNaL7yyubjmiy9NBW:YW2uAC9sVEZL0vdnz
MD5 SHA1 SHA512 SSDEEP

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83aa4cc77f591dfc2374580bbd95f6ba_4d0966de-9ba4-4ee9-b282-eaf9cf9c9160

Path C:\Users\Admin\AppData\Roaming\Microsoft\Crypto\RSA\S-1-5-21-4018855536-2201274732-320770143-1000\83aa4cc77f591dfc2374580bbd95f6ba_4d0966de-9ba4-4ee9-b282-eaf9cf9c9160
Size 45B
SHA256 11e6aca8e682c046c83b721eeb5c72c5ef03cb5936c60df6f4993511ddc61238
MD5 c8366ae350e7019aefc9d1e6e6a498c6
SHA1 5731d8a3e6568a5f2dfbbc87e3db9637df280b61
SHA512 33c980d5a638bfc791de291ebf4b6d263b384247ab27f261a54025108f2f85374b579a026e545f81395736dd40fa4696f2163ca17640dd47f1c42bc9971b18cd
MD5 SHA1 SHA512

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rmfncoown.txt

Path C:\Users\Admin\AppData\Roaming\rmfncoown.txt
Size 92KB
SHA256 943a982c65ebf476f6f454a95e4f8105f6c89d3e90d638113f718a208aa51db0
MD5 40324e4190ca694d65c17b8142490c1e
SHA1 14f8a7fbd6580cc1146a04af95c37b6772bb5215
SHA512 885107f66e0441f1d14ae4f193bcacea831f46872ec74501d82f29af7e51731714acf8a63fce72dac557c20c6cd15d1e77734e3fa443bc28dd3cda5aca22f5b7
SSDEEP 1536:fY/91A3oP139Q/1+jcuc7/nGSwPs2WN0kpLMmjHTzZbheB3gHGv4vxNpEHrGGH:fY43oP1tQgjkG5PzWak9MmTT+B3JvJL1
MD5 SHA1 SHA512 SSDEEP

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jna-5.5.0.jar

Path C:\Users\Admin\lib\jna-5.5.0.jar
Size 1.4MB
SHA256 b308faebfe4ed409de8410e0a632d164b2126b035f6eacff968d3908cafb4d9e
MD5 acfb5b5fd9ee10bf69497792fd469f85
SHA1 0e0845217c4907822403912ad6828d8e0b256208
SHA512 e52575f58a195ceb3bd16b9740eadf5bc5b1d4d63c0734e8e5fd1d1776aa2d068d2e4c7173b83803f95f72c0a6759ae1c9b65773c734250d4cfcdf47a19f82aa
SSDEEP 24576:BggLnybolJdaW+864NkqCUer8N7sSFOaj5lWOEMIKk6idJRWPTgzq3bICEz2lFO:BTnybo9aW+L5qCUO0xsiMPZrJgPLLIO6
MD5 SHA1 SHA512 SSDEEP

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jna-platform-5.5.0.jar

Path C:\Users\Admin\lib\jna-platform-5.5.0.jar
Size 2.6MB
SHA256 24d81621f82ac29fcdd9a74116031f5907a2343158e616f4573bbfa2434ae0d5
MD5 2f4a99c2758e72ee2b59a73586a2322f
SHA1 af38e7c4d0fc73c23ecd785443705bfdee5b90bf
SHA512 b860459a0d3bf7ccb600a03aa1d2ac0358619ee89b2b96ed723541e182b6fdab53aefef7992acb4e03fca67aa47cbe3907b1e6060a60b57ed96c4e00c35c7494
SSDEEP 24576:DyciOooDbK7Yw1J75n4BP/NtK2ov3mhDR6:3iOLDOZJ75nwtK2ovWh8
MD5 SHA1 SHA512 SSDEEP

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sqlite-jdbc-3.14.2.1.jar

Path C:\Users\Admin\lib\sqlite-jdbc-3.14.2.1.jar
Size 4.1MB
SHA256 2eae3dea1c3dde6104c49f9601074b6038ff6abcf3be23f4b56f6720a4f6a491
MD5 b33387e15ab150a7bf560abdc73c3bec
SHA1 66b8075784131f578ef893fd7674273f709b9a4c
SHA512 25cfb0d6ce35d0bcb18527d3aa12c63ecb2d9c1b8b78805d1306e516c13480b79bb0d74730aa93bd1752f9ac2da9fdd51781c48844cea2fd52a06c62852c8279
SSDEEP 98304:czJoX0izQbrabWo2MxgErRYxFOY8IsFWyTIiTIzMpca:cJoXHQKW9MxRr8wZZsikzMaa
MD5 SHA1 SHA512 SSDEEP

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system-hook-3.5.jar

Path C:\Users\Admin\lib\system-hook-3.5.jar
Size 772KB
SHA256 2ddda8af6faef8bde46acf43ec546603180bcf8dcb2e5591fff8ac9cd30b5609
MD5 e1aa38a1e78a76a6de73efae136cdb3a
SHA1 c463da71871f780b2e2e5dba115d43953b537daf
SHA512 fee16fe9364926ec337e52f551fd62ed81984808a847de2fd68ff29b6c5da0dcc04ef6d8977f0fe675662a7d2ea1065cdcdd2a5259446226a7c7c5516bd7d60d
SSDEEP 24576:IhCFW8WXvOsWW9XGmvcVfkfTnzrLvadKPpv:IhCYWstW202t
MD5 SHA1 SHA512 SSDEEP

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pzsjuirnnn.js

Path C:\Users\Admin\pzsjuirnnn.js
Size 204KB
SHA256 1d10f4534674ce86f17ec22da471f3d472da1f6a15348238e4e289f0e0e4c0e0
MD5 df07d5680a1bcd9a5af8a5a1b6b52598
SHA1 b070b44d630ae454c34419e65d38850ee2ca6bfb
SHA512 e1f742db062e02773a9cde941607b512bc97ac68f09bb2e249492303f28011116bcfab10c84f596cef45c7fd39da01f2715ba3ea6f8f429c984ac896ed821ee6
SSDEEP 3072:DQnDz6Jp0TSAFRXUQcXT/UIdk6S0+bNjd9GTQLTQTjN8xHWaW6h2BGoOCAp2kQp:DQDuaFR2BdQj9GTQLoQWaW/WCinQp
MD5 SHA1 SHA512 SSDEEP

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memory/924-101-0x000001FCD1F80000-0x000001FCD21F0000-memory.dmp

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memory/924-73-0x000001FCD0730000-0x000001FCD0731000-memory.dmp

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memory/924-99-0x000001FCD0730000-0x000001FCD0731000-memory.dmp

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memory/924-100-0x000001FCD0730000-0x000001FCD0731000-memory.dmp

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memory/924-21-0x000001FCD1F80000-0x000001FCD21F0000-memory.dmp

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memory/924-82-0x000001FCD0730000-0x000001FCD0731000-memory.dmp

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memory/924-76-0x000001FCD0730000-0x000001FCD0731000-memory.dmp

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memory/924-96-0x000001FCD0730000-0x000001FCD0731000-memory.dmp

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memory/924-46-0x000001FCD0730000-0x000001FCD0731000-memory.dmp

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memory/2456-2-0x0000020507D00000-0x0000020507F70000-memory.dmp

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memory/2456-14-0x00000205066C0000-0x00000205066C1000-memory.dmp

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memory/2456-15-0x0000020507D00000-0x0000020507F70000-memory.dmp

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memory/3852-176-0x0000024241170000-0x0000024241171000-memory.dmp

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memory/4224-133-0x0000029841480000-0x0000029841481000-memory.dmp

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads