Resubmissions
10/04/2024, 02:38
240410-c4pceacb241010/04/2024, 02:37
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240410-c4jf6aca981014/10/2023, 01:31
231014-bxezqahg8w10Analysis
- max time kernel
300s - max time network
305s - platform
windows11-21h2_x64 - resource
win11-20240221-en - resource tags
arch:x64arch:x86image:win11-20240221-enlocale:en-usos:windows11-21h2-x64system - submitted
10/04/2024, 02:37
Behavioral task
behavioral1
Sample
k2fef4820980d3c2c1f2cce2f95e94f5e1c18.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
k2fef4820980d3c2c1f2cce2f95e94f5e1c18.exe
Resource
win10-20240404-en
Behavioral task
behavioral3
Sample
k2fef4820980d3c2c1f2cce2f95e94f5e1c18.exe
Resource
win10v2004-20240226-en
Behavioral task
behavioral4
Sample
k2fef4820980d3c2c1f2cce2f95e94f5e1c18.exe
Resource
win11-20240221-en
General
- Target k2fef4820980d3c2c1f2cce2f95e94f5e1c18.exe
- Size 339KB
- Sample240410-c4jf6aca98
- SHA256 d71329c78c704ee9cc7133761b5e738a315e7eb784e348d7743a8a7366724e9f
- MD5 1cab66a5c15f97f040fb23d354d04a9c
- SHA1 f0dbebd22b2c7bfedbefa4435b345c58416f9448
- SHA512 a5508a75a0a7c747cc50fe8284b9097e1cb9ae83bd7e80553ffa875a6d07d6eec7fc18f66a0a328aa0614c26642d884bfe152e6c09a11eeb0d64f6be66064eab
- SSDEEP 3072:gdrpN/JlLKd5hkad0lk0vGJGMlngDBXrkhamyeFykt9sxc8eTRLUvenjLM/zNlgl:0UGPUvva+lxXY6uXAJMI9bAV0D
- MD5 SHA1 SHA512 SSDEEP
Malware Config
Extracted
-
gurcu
-
https://api.telegram.org/bot6193093056:AAHzyNGUGS9aUG6CCx6ENLoXpCFLzEQywIQ/sendMessage?chat_id=1098292643
Signatures
- Executes dropped EXE 12 IoCs
pid Process 2256 k2fef4820980d3c2c1f2cce2f95e94f5e1c18.exe 2912 tor.exe 780 k2fef4820980d3c2c1f2cce2f95e94f5e1c18.exe 3980 tor.exe 2004 k2fef4820980d3c2c1f2cce2f95e94f5e1c18.exe 2668 tor.exe 1324 k2fef4820980d3c2c1f2cce2f95e94f5e1c18.exe 1400 tor.exe 920 k2fef4820980d3c2c1f2cce2f95e94f5e1c18.exe 2576 tor.exe 4048 k2fef4820980d3c2c1f2cce2f95e94f5e1c18.exe 3784 tor.exe - Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
- Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-627134735-902745853-4257352768-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 k2fef4820980d3c2c1f2cce2f95e94f5e1c18.exe Key opened \REGISTRY\USER\S-1-5-21-627134735-902745853-4257352768-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 k2fef4820980d3c2c1f2cce2f95e94f5e1c18.exe Key opened \REGISTRY\USER\S-1-5-21-627134735-902745853-4257352768-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 k2fef4820980d3c2c1f2cce2f95e94f5e1c18.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 1 ip-api.com - Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
pid Process 2344 schtasks.exe - Runs ping.exe 1 TTPs 1 IoCs
pid Process 1308 PING.EXE - Suspicious behavior: EnumeratesProcesses 1 IoCs
pid Process 2256 k2fef4820980d3c2c1f2cce2f95e94f5e1c18.exe - Suspicious use of AdjustPrivilegeToken 7 IoCs
description pid Process Token: SeDebugPrivilege 244 k2fef4820980d3c2c1f2cce2f95e94f5e1c18.exe Token: SeDebugPrivilege 2256 k2fef4820980d3c2c1f2cce2f95e94f5e1c18.exe Token: SeDebugPrivilege 780 k2fef4820980d3c2c1f2cce2f95e94f5e1c18.exe Token: SeDebugPrivilege 2004 k2fef4820980d3c2c1f2cce2f95e94f5e1c18.exe Token: SeDebugPrivilege 1324 k2fef4820980d3c2c1f2cce2f95e94f5e1c18.exe Token: SeDebugPrivilege 920 k2fef4820980d3c2c1f2cce2f95e94f5e1c18.exe Token: SeDebugPrivilege 4048 k2fef4820980d3c2c1f2cce2f95e94f5e1c18.exe - Suspicious use of WriteProcessMemory 24 IoCs
description pid Process procid_target PID 244 wrote to memory of 5100 244 k2fef4820980d3c2c1f2cce2f95e94f5e1c18.exe 80 PID 244 wrote to memory of 5100 244 k2fef4820980d3c2c1f2cce2f95e94f5e1c18.exe 80 PID 5100 wrote to memory of 3948 5100 cmd.exe 82 PID 5100 wrote to memory of 3948 5100 cmd.exe 82 PID 5100 wrote to memory of 1308 5100 cmd.exe 83 PID 5100 wrote to memory of 1308 5100 cmd.exe 83 PID 5100 wrote to memory of 2344 5100 cmd.exe 84 PID 5100 wrote to memory of 2344 5100 cmd.exe 84 PID 5100 wrote to memory of 2256 5100 cmd.exe 85 PID 5100 wrote to memory of 2256 5100 cmd.exe 85 PID 2256 wrote to memory of 4112 2256 k2fef4820980d3c2c1f2cce2f95e94f5e1c18.exe 86 PID 2256 wrote to memory of 4112 2256 k2fef4820980d3c2c1f2cce2f95e94f5e1c18.exe 86 PID 2256 wrote to memory of 2912 2256 k2fef4820980d3c2c1f2cce2f95e94f5e1c18.exe 88 PID 2256 wrote to memory of 2912 2256 k2fef4820980d3c2c1f2cce2f95e94f5e1c18.exe 88 PID 780 wrote to memory of 3980 780 k2fef4820980d3c2c1f2cce2f95e94f5e1c18.exe 92 PID 780 wrote to memory of 3980 780 k2fef4820980d3c2c1f2cce2f95e94f5e1c18.exe 92 PID 2004 wrote to memory of 2668 2004 k2fef4820980d3c2c1f2cce2f95e94f5e1c18.exe 98 PID 2004 wrote to memory of 2668 2004 k2fef4820980d3c2c1f2cce2f95e94f5e1c18.exe 98 PID 1324 wrote to memory of 1400 1324 k2fef4820980d3c2c1f2cce2f95e94f5e1c18.exe 103 PID 1324 wrote to memory of 1400 1324 k2fef4820980d3c2c1f2cce2f95e94f5e1c18.exe 103 PID 920 wrote to memory of 2576 920 k2fef4820980d3c2c1f2cce2f95e94f5e1c18.exe 108 PID 920 wrote to memory of 2576 920 k2fef4820980d3c2c1f2cce2f95e94f5e1c18.exe 108 PID 4048 wrote to memory of 3784 4048 k2fef4820980d3c2c1f2cce2f95e94f5e1c18.exe 113 PID 4048 wrote to memory of 3784 4048 k2fef4820980d3c2c1f2cce2f95e94f5e1c18.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.
- outlook_office_path 1 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-627134735-902745853-4257352768-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 k2fef4820980d3c2c1f2cce2f95e94f5e1c18.exe - outlook_win_path 1 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-627134735-902745853-4257352768-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 k2fef4820980d3c2c1f2cce2f95e94f5e1c18.exe
Processes
-
C:\Users\Admin\AppData\Local\Temp\k2fef4820980d3c2c1f2cce2f95e94f5e1c18.exe"C:\Users\Admin\AppData\Local\Temp\k2fef4820980d3c2c1f2cce2f95e94f5e1c18.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:244 -
C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C chcp 65001 && ping 127.0.0.1 && schtasks /create /tn "k2fef4820980d3c2c1f2cce2f95e94f5e1c18" /sc MINUTE /tr "C:\Users\Admin\AppData\Local\TeamViewer\k2fef4820980d3c2c1f2cce2f95e94f5e1c18.exe" /rl HIGHEST /f && DEL /F /S /Q /A "C:\Users\Admin\AppData\Local\Temp\k2fef4820980d3c2c1f2cce2f95e94f5e1c18.exe" &&START "" "C:\Users\Admin\AppData\Local\TeamViewer\k2fef4820980d3c2c1f2cce2f95e94f5e1c18.exe"2⤵
- Suspicious use of WriteProcessMemory
PID:5100 -
C:\Windows\system32\chcp.comchcp 650013⤵PID:3948
-
-
C:\Windows\system32\PING.EXEping 127.0.0.13⤵
- Runs ping.exe
PID:1308
-
-
C:\Windows\system32\schtasks.exeschtasks /create /tn "k2fef4820980d3c2c1f2cce2f95e94f5e1c18" /sc MINUTE /tr "C:\Users\Admin\AppData\Local\TeamViewer\k2fef4820980d3c2c1f2cce2f95e94f5e1c18.exe" /rl HIGHEST /f3⤵
- Creates scheduled task(s)
PID:2344
-
-
C:\Users\Admin\AppData\Local\TeamViewer\k2fef4820980d3c2c1f2cce2f95e94f5e1c18.exe"C:\Users\Admin\AppData\Local\TeamViewer\k2fef4820980d3c2c1f2cce2f95e94f5e1c18.exe"3⤵
- Executes dropped EXE
- Accesses Microsoft Outlook profiles
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
- outlook_office_path
- outlook_win_path
PID:2256 -
C:\Windows\System32\tar.exe"C:\Windows\System32\tar.exe" -xvzf "C:\Users\Admin\AppData\Local\Temp\tmp9124.tmp" -C "C:\Users\Admin\AppData\Local\lcybndk48g"4⤵PID:4112
-
-
C:\Users\Admin\AppData\Local\lcybndk48g\tor\tor.exe"C:\Users\Admin\AppData\Local\lcybndk48g\tor\tor.exe" -f "C:\Users\Admin\AppData\Local\lcybndk48g\torrc.txt"4⤵
- Executes dropped EXE
PID:2912
-
-
-
-
C:\Users\Admin\AppData\Local\TeamViewer\k2fef4820980d3c2c1f2cce2f95e94f5e1c18.exeC:\Users\Admin\AppData\Local\TeamViewer\k2fef4820980d3c2c1f2cce2f95e94f5e1c18.exe1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:780 -
C:\Users\Admin\AppData\Local\lcybndk48g\tor\tor.exe"C:\Users\Admin\AppData\Local\lcybndk48g\tor\tor.exe" -f "C:\Users\Admin\AppData\Local\lcybndk48g\torrc.txt"2⤵
- Executes dropped EXE
PID:3980
-
-
C:\Users\Admin\AppData\Local\TeamViewer\k2fef4820980d3c2c1f2cce2f95e94f5e1c18.exeC:\Users\Admin\AppData\Local\TeamViewer\k2fef4820980d3c2c1f2cce2f95e94f5e1c18.exe1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2004 -
C:\Users\Admin\AppData\Local\lcybndk48g\tor\tor.exe"C:\Users\Admin\AppData\Local\lcybndk48g\tor\tor.exe" -f "C:\Users\Admin\AppData\Local\lcybndk48g\torrc.txt"2⤵
- Executes dropped EXE
PID:2668
-
-
C:\Users\Admin\AppData\Local\TeamViewer\k2fef4820980d3c2c1f2cce2f95e94f5e1c18.exeC:\Users\Admin\AppData\Local\TeamViewer\k2fef4820980d3c2c1f2cce2f95e94f5e1c18.exe1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1324 -
C:\Users\Admin\AppData\Local\lcybndk48g\tor\tor.exe"C:\Users\Admin\AppData\Local\lcybndk48g\tor\tor.exe" -f "C:\Users\Admin\AppData\Local\lcybndk48g\torrc.txt"2⤵
- Executes dropped EXE
PID:1400
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-
C:\Users\Admin\AppData\Local\TeamViewer\k2fef4820980d3c2c1f2cce2f95e94f5e1c18.exeC:\Users\Admin\AppData\Local\TeamViewer\k2fef4820980d3c2c1f2cce2f95e94f5e1c18.exe1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:920 -
C:\Users\Admin\AppData\Local\lcybndk48g\tor\tor.exe"C:\Users\Admin\AppData\Local\lcybndk48g\tor\tor.exe" -f "C:\Users\Admin\AppData\Local\lcybndk48g\torrc.txt"2⤵
- Executes dropped EXE
PID:2576
-
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C:\Users\Admin\AppData\Local\TeamViewer\k2fef4820980d3c2c1f2cce2f95e94f5e1c18.exeC:\Users\Admin\AppData\Local\TeamViewer\k2fef4820980d3c2c1f2cce2f95e94f5e1c18.exe1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4048 -
C:\Users\Admin\AppData\Local\lcybndk48g\tor\tor.exe"C:\Users\Admin\AppData\Local\lcybndk48g\tor\tor.exe" -f "C:\Users\Admin\AppData\Local\lcybndk48g\torrc.txt"2⤵
- Executes dropped EXE
PID:3784
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\k2fef4820980d3c2c1f2cce2f95e94f5e1c18.exe.log
- Size 847B
- SHA256 50a57273ecb794e53b0622eb841341e2643c11f53fa47356e6e754ab2268171d
- MD5 486ebddc86ea8b3e965d390d22283a23
- SHA1 eaffc047f067084867e8575c576a9ec60e094ba8
- SHA512 0a50ba02250b38355a6f4fb94e40c61258a74031d9aea7cdf675f3e068f39ec0748ecf292aaf2f94b1963b9d66516ee79aa6c552617048e248774af0ff07189d
- MD5 SHA1 SHA512
- Path C:\Users\Admin\AppData\Local\TeamViewer\k2fef4820980d3c2c1f2cce2f95e94f5e1c18.exe
- Size 339KB
- SHA256 d71329c78c704ee9cc7133761b5e738a315e7eb784e348d7743a8a7366724e9f
- MD5 1cab66a5c15f97f040fb23d354d04a9c
- SHA1 f0dbebd22b2c7bfedbefa4435b345c58416f9448
- SHA512 a5508a75a0a7c747cc50fe8284b9097e1cb9ae83bd7e80553ffa875a6d07d6eec7fc18f66a0a328aa0614c26642d884bfe152e6c09a11eeb0d64f6be66064eab
- SSDEEP 3072:gdrpN/JlLKd5hkad0lk0vGJGMlngDBXrkhamyeFykt9sxc8eTRLUvenjLM/zNlgl:0UGPUvva+lxXY6uXAJMI9bAV0D
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Local\Temp\tmp9124.tmp
- Size 13.3MB
- SHA256 b630008f6d3887793d48b87091e56691e292894dd4fa100dc4a418a2f29dcc12
- MD5 89d2d5811c1aff539bb355f15f3ddad0
- SHA1 5bb3577c25b6d323d927200c48cd184a3e27c873
- SHA512 39e576124c54143520c5435a2ef9b24506131e13403489c0692f09b89135015d611c4988d4772f8a1e6557fa68b4667d467334461009cee8c2227dfc3e295289
- SSDEEP 393216:2YEKAkOvd2hKJDrq/OtTCRMTJqIdLZOBgfZn:XEJP2cJD2+GOJqMZOBGZn
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Local\lcybndk48g\data\cached-microdesc-consensus
- Size 2.7MB
- SHA256 60b43cdce0f807f7891521f396f53def34a7d98986dbde0faa2a197189c587f3
- MD5 a0db8a87f7b723266c8b04255da46b06
- SHA1 4df00ea56d22d88f3d2e005ef66bad5b3ef92ebf
- SHA512 41b8fc467d11af7ca6a42c7e94d1b8295ab3ae5d6d186b4f378e6e079440520e8324b695da1134beb2bc1697d2491edcc70c1b75ab6fc66b9c1cb2ecbcdb4a7d
- SSDEEP 12288:v8nySbLlrTqASpoC6J9gRbMVwvKZq2gbIIuXM6h4Uviymjo09LQQ:vMxBSu+1MpKR6l6yMQQ
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Local\lcybndk48g\data\cached-microdescs.new
- Size 9.5MB
- SHA256 627b41384dbf00956d7dbd26f6b2ddd89bf54a7cf4d017e5fa9d3c9e219e57c9
- MD5 4d6c6207bb534581ad4792731e9ea998
- SHA1 d17b68012d9458e72f7f116b384e258b33471c44
- SHA512 7d9b05df03bf7621f3c570922e756155d571fabfa1fc5fa2356a131b733ebed71b08697dbdd281ece4cee629a2e56de868847be1b2f90a511a87ca0408e3907f
- SSDEEP 24576:KnQpw8l7FcqXwll/EqsfDZMmI0H+jVQQ2aCJKim61IR/aohGL6jzSGJtknT6j0zU:FpGzL5WrXv5I
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Local\lcybndk48g\host\hostname
- Size 64B
- SHA256 859467118a996a5d24f6aec25d62f58b38b05430007ff02cb6e8aced7c532c17
- MD5 0ae35449385e9e2977d42aec46ee1f80
- SHA1 7e70e2ed9159a5610570c58f09ccff767fe1637c
- SHA512 222506c613c7e9ac8ea869390659cbb2a1ebdb3dc8b9e9cec64727e08bcc58e3f96dac8c578cd738a9c8cb2c0f3af93ac6b18f65161dd8128c7dc6db6022c7a2
- MD5 SHA1 SHA512
- Path C:\Users\Admin\AppData\Local\lcybndk48g\port.dat
- Size 4B
- SHA256 5728c992e0c03fa48754a8636ffb192f1e2aa23f20be242c290d5eefd9b80182
- MD5 485843481a7edacbfce101ecb1e4d2a8
- SHA1 68cf3877bb4c5201c8a013851c1d7301b7816896
- SHA512 8a4f2bfc91147b1825c6eea8f92d1ae97834fbe10033e570a7b862dfdc5ba5bc8b33df5a62dc9f184ecdd33276af45667df805ff17791a56affa2f10df3518b9
- MD5 SHA1 SHA512
- Path C:\Users\Admin\AppData\Local\lcybndk48g\tor\tor.exe
- Size 7.4MB
- SHA256 46fe244b548265c78ab961e8f787bc8bf21edbcaaf175fa3b8be3137c6845a82
- MD5 88590909765350c0d70c6c34b1f31dd2
- SHA1 129b27c3926e53e5df6d44cc6adf39c3a8d9ebf7
- SHA512 a8af08d9169a31a1c3419d4e6e8fbe608c800d323840563b5a560d3e09e78a492201f07cc0d3864efbff8ad81e59885fc43a6b749e0a3377aa8555df258af192
- SSDEEP 98304:3iPgwPv8LqpP5ZkfiSMdm+KHMU2O1R0fzwkEOlcHA6IZGQ:VbM8jjX1R0R6YL
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Local\lcybndk48g\torrc.txt
- Size 218B
- SHA256 4bf74f12df627c9c41363c18b30549b1d2c810ad1b15f0f027bc5cf0ed4aa60f
- MD5 992e6b235da95a1ebe32fd3c077cf577
- SHA1 624068c43ff7704930e3a32e98d33256a09839b6
- SHA512 dd9eff1ba48d3bde177245ad6f789f6dcf058de6e6fa79e1b3ede0bc3c9035051c548bec2384e3738cb4fe18238306d61c431b548b9a67c84271ec72c7665bfc
- MD5 SHA1 SHA512