Analysis
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max time kernel
105s -
max time network
120s -
platform
windows10-2004_x64 -
resource
win10v2004-20231222-en -
resource tags
arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system -
submitted
25-01-2024 17:15
Static task
static1
Behavioral task
behavioral1
Sample
SKM_C3350191107102XXX024.exe
Resource
win7-20231129-en
Behavioral task
behavioral2
Sample
SKM_C3350191107102XXX024.exe
Resource
win10v2004-20231222-en
General
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Target
SKM_C3350191107102XXX024.exe
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Size
1.7MB
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MD5
d5249a2a4ede78b1ff3799e6c8b0b0cc
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SHA1
d0e4ee560dc2e4a5d71b8c1c3e1626541dafb399
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SHA256
a6a4e8b6276ff31b64a3c12858ca9c231972a8c0f12a89c01b4f32d2b95ed200
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SHA512
96f65962bace449806e2d522e627ade157327719564e5738473d824334fa571f1aadfbfb3ce4259f92f6636a2ce3cd2545b87b364722955c8cf2d0f0dbe1c927
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SSDEEP
24576:VEn+4Y9qBOsb/B9RJ4iju8F4WhH/ks5FDV1Q/JZeP03gus:VE+4YkOAB9RJW8F4M/kKFDVwJZ53C
Malware Config
Extracted
agenttesla
https://api.telegram.org/bot6632122066:AAE29XGsmdODIClM9z0ljCY_v_-OdAjdPOM/
Signatures
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AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
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Detect ZGRat V1 34 IoCs
Processes:
resource yara_rule behavioral2/memory/1624-3-0x0000000005840000-0x00000000058EA000-memory.dmp family_zgrat_v1 behavioral2/memory/1624-5-0x0000000005840000-0x00000000058E4000-memory.dmp family_zgrat_v1 behavioral2/memory/1624-4-0x0000000005840000-0x00000000058E4000-memory.dmp family_zgrat_v1 behavioral2/memory/1624-7-0x0000000005840000-0x00000000058E4000-memory.dmp family_zgrat_v1 behavioral2/memory/1624-17-0x0000000005840000-0x00000000058E4000-memory.dmp family_zgrat_v1 behavioral2/memory/1624-25-0x0000000005840000-0x00000000058E4000-memory.dmp family_zgrat_v1 behavioral2/memory/1624-31-0x0000000005840000-0x00000000058E4000-memory.dmp family_zgrat_v1 behavioral2/memory/1624-43-0x0000000005840000-0x00000000058E4000-memory.dmp family_zgrat_v1 behavioral2/memory/1624-55-0x0000000005840000-0x00000000058E4000-memory.dmp family_zgrat_v1 behavioral2/memory/1624-65-0x0000000005840000-0x00000000058E4000-memory.dmp family_zgrat_v1 behavioral2/memory/1624-67-0x0000000005840000-0x00000000058E4000-memory.dmp family_zgrat_v1 behavioral2/memory/1624-63-0x0000000005840000-0x00000000058E4000-memory.dmp family_zgrat_v1 behavioral2/memory/1624-61-0x0000000005840000-0x00000000058E4000-memory.dmp family_zgrat_v1 behavioral2/memory/1624-59-0x0000000005840000-0x00000000058E4000-memory.dmp family_zgrat_v1 behavioral2/memory/1624-57-0x0000000005840000-0x00000000058E4000-memory.dmp family_zgrat_v1 behavioral2/memory/1624-53-0x0000000005840000-0x00000000058E4000-memory.dmp family_zgrat_v1 behavioral2/memory/1624-51-0x0000000005840000-0x00000000058E4000-memory.dmp family_zgrat_v1 behavioral2/memory/1624-49-0x0000000005840000-0x00000000058E4000-memory.dmp family_zgrat_v1 behavioral2/memory/1624-47-0x0000000005840000-0x00000000058E4000-memory.dmp family_zgrat_v1 behavioral2/memory/1624-45-0x0000000005840000-0x00000000058E4000-memory.dmp family_zgrat_v1 behavioral2/memory/1624-41-0x0000000005840000-0x00000000058E4000-memory.dmp family_zgrat_v1 behavioral2/memory/1624-39-0x0000000005840000-0x00000000058E4000-memory.dmp family_zgrat_v1 behavioral2/memory/1624-37-0x0000000005840000-0x00000000058E4000-memory.dmp family_zgrat_v1 behavioral2/memory/1624-35-0x0000000005840000-0x00000000058E4000-memory.dmp family_zgrat_v1 behavioral2/memory/1624-33-0x0000000005840000-0x00000000058E4000-memory.dmp family_zgrat_v1 behavioral2/memory/1624-29-0x0000000005840000-0x00000000058E4000-memory.dmp family_zgrat_v1 behavioral2/memory/1624-27-0x0000000005840000-0x00000000058E4000-memory.dmp family_zgrat_v1 behavioral2/memory/1624-23-0x0000000005840000-0x00000000058E4000-memory.dmp family_zgrat_v1 behavioral2/memory/1624-21-0x0000000005840000-0x00000000058E4000-memory.dmp family_zgrat_v1 behavioral2/memory/1624-19-0x0000000005840000-0x00000000058E4000-memory.dmp family_zgrat_v1 behavioral2/memory/1624-15-0x0000000005840000-0x00000000058E4000-memory.dmp family_zgrat_v1 behavioral2/memory/1624-13-0x0000000005840000-0x00000000058E4000-memory.dmp family_zgrat_v1 behavioral2/memory/1624-11-0x0000000005840000-0x00000000058E4000-memory.dmp family_zgrat_v1 behavioral2/memory/1624-9-0x0000000005840000-0x00000000058E4000-memory.dmp family_zgrat_v1 -
Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
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Reads user/profile data of local email clients 2 TTPs
Email clients store some user data on disk where infostealers will often target it.
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Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
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Adds Run key to start application 2 TTPs 2 IoCs
Processes:
SKM_C3350191107102XXX024.exeRegAsm.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-3803511929-1339359695-2191195476-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Gvhfx = "C:\\Users\\Admin\\AppData\\Roaming\\Gvhfx.exe" SKM_C3350191107102XXX024.exe Set value (str) \REGISTRY\USER\S-1-5-21-3803511929-1339359695-2191195476-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\xStXz = "C:\\Users\\Admin\\AppData\\Roaming\\xStXz\\xStXz.exe" RegAsm.exe -
Looks up external IP address via web service 2 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
Processes:
flow ioc 13 api.ipify.org 14 api.ipify.org -
Suspicious use of SetThreadContext 1 IoCs
Processes:
SKM_C3350191107102XXX024.exedescription pid process target process PID 1624 set thread context of 3760 1624 SKM_C3350191107102XXX024.exe RegAsm.exe -
Suspicious behavior: EnumeratesProcesses 2 IoCs
Processes:
RegAsm.exepid process 3760 RegAsm.exe 3760 RegAsm.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
Processes:
SKM_C3350191107102XXX024.exeRegAsm.exedescription pid process Token: SeDebugPrivilege 1624 SKM_C3350191107102XXX024.exe Token: SeDebugPrivilege 3760 RegAsm.exe -
Suspicious use of WriteProcessMemory 8 IoCs
Processes:
SKM_C3350191107102XXX024.exedescription pid process target process PID 1624 wrote to memory of 3760 1624 SKM_C3350191107102XXX024.exe RegAsm.exe PID 1624 wrote to memory of 3760 1624 SKM_C3350191107102XXX024.exe RegAsm.exe PID 1624 wrote to memory of 3760 1624 SKM_C3350191107102XXX024.exe RegAsm.exe PID 1624 wrote to memory of 3760 1624 SKM_C3350191107102XXX024.exe RegAsm.exe PID 1624 wrote to memory of 3760 1624 SKM_C3350191107102XXX024.exe RegAsm.exe PID 1624 wrote to memory of 3760 1624 SKM_C3350191107102XXX024.exe RegAsm.exe PID 1624 wrote to memory of 3760 1624 SKM_C3350191107102XXX024.exe RegAsm.exe PID 1624 wrote to memory of 3760 1624 SKM_C3350191107102XXX024.exe RegAsm.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\SKM_C3350191107102XXX024.exe"C:\Users\Admin\AppData\Local\Temp\SKM_C3350191107102XXX024.exe"1⤵
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1624 -
C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exeC:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe2⤵
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:3760
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
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memory/1624-0-0x0000000074650000-0x0000000074E00000-memory.dmpFilesize
7.7MB
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memory/1624-1-0x0000000000CB0000-0x0000000000E66000-memory.dmpFilesize
1.7MB
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memory/1624-2-0x00000000057C0000-0x00000000057D0000-memory.dmpFilesize
64KB
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memory/1624-3-0x0000000005840000-0x00000000058EA000-memory.dmpFilesize
680KB
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memory/1624-5-0x0000000005840000-0x00000000058E4000-memory.dmpFilesize
656KB
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memory/1624-4-0x0000000005840000-0x00000000058E4000-memory.dmpFilesize
656KB
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memory/1624-7-0x0000000005840000-0x00000000058E4000-memory.dmpFilesize
656KB
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memory/1624-17-0x0000000005840000-0x00000000058E4000-memory.dmpFilesize
656KB
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memory/1624-25-0x0000000005840000-0x00000000058E4000-memory.dmpFilesize
656KB
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memory/1624-31-0x0000000005840000-0x00000000058E4000-memory.dmpFilesize
656KB
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memory/1624-43-0x0000000005840000-0x00000000058E4000-memory.dmpFilesize
656KB
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memory/1624-55-0x0000000005840000-0x00000000058E4000-memory.dmpFilesize
656KB
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memory/1624-65-0x0000000005840000-0x00000000058E4000-memory.dmpFilesize
656KB
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memory/1624-67-0x0000000005840000-0x00000000058E4000-memory.dmpFilesize
656KB
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memory/1624-63-0x0000000005840000-0x00000000058E4000-memory.dmpFilesize
656KB
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memory/1624-61-0x0000000005840000-0x00000000058E4000-memory.dmpFilesize
656KB
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memory/1624-59-0x0000000005840000-0x00000000058E4000-memory.dmpFilesize
656KB
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memory/1624-57-0x0000000005840000-0x00000000058E4000-memory.dmpFilesize
656KB
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memory/1624-53-0x0000000005840000-0x00000000058E4000-memory.dmpFilesize
656KB
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memory/1624-51-0x0000000005840000-0x00000000058E4000-memory.dmpFilesize
656KB
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memory/1624-49-0x0000000005840000-0x00000000058E4000-memory.dmpFilesize
656KB
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memory/1624-47-0x0000000005840000-0x00000000058E4000-memory.dmpFilesize
656KB
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memory/1624-45-0x0000000005840000-0x00000000058E4000-memory.dmpFilesize
656KB
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memory/1624-41-0x0000000005840000-0x00000000058E4000-memory.dmpFilesize
656KB
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memory/1624-39-0x0000000005840000-0x00000000058E4000-memory.dmpFilesize
656KB
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memory/1624-37-0x0000000005840000-0x00000000058E4000-memory.dmpFilesize
656KB
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memory/1624-35-0x0000000005840000-0x00000000058E4000-memory.dmpFilesize
656KB
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memory/1624-33-0x0000000005840000-0x00000000058E4000-memory.dmpFilesize
656KB
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memory/1624-29-0x0000000005840000-0x00000000058E4000-memory.dmpFilesize
656KB
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memory/1624-27-0x0000000005840000-0x00000000058E4000-memory.dmpFilesize
656KB
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memory/1624-23-0x0000000005840000-0x00000000058E4000-memory.dmpFilesize
656KB
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memory/1624-21-0x0000000005840000-0x00000000058E4000-memory.dmpFilesize
656KB
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memory/1624-19-0x0000000005840000-0x00000000058E4000-memory.dmpFilesize
656KB
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memory/1624-15-0x0000000005840000-0x00000000058E4000-memory.dmpFilesize
656KB
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memory/1624-13-0x0000000005840000-0x00000000058E4000-memory.dmpFilesize
656KB
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memory/1624-11-0x0000000005840000-0x00000000058E4000-memory.dmpFilesize
656KB
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memory/1624-9-0x0000000005840000-0x00000000058E4000-memory.dmpFilesize
656KB
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memory/1624-936-0x00000000057A0000-0x00000000057A1000-memory.dmpFilesize
4KB
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memory/1624-938-0x00000000059A0000-0x00000000059EC000-memory.dmpFilesize
304KB
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memory/1624-937-0x0000000005960000-0x00000000059A2000-memory.dmpFilesize
264KB
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memory/1624-939-0x0000000006350000-0x00000000068F4000-memory.dmpFilesize
5.6MB
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memory/1624-943-0x0000000074650000-0x0000000074E00000-memory.dmpFilesize
7.7MB
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memory/3760-944-0x0000000074650000-0x0000000074E00000-memory.dmpFilesize
7.7MB
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memory/3760-945-0x0000000000400000-0x0000000000442000-memory.dmpFilesize
264KB
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memory/3760-947-0x0000000005930000-0x0000000005996000-memory.dmpFilesize
408KB
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memory/3760-946-0x0000000005920000-0x0000000005930000-memory.dmpFilesize
64KB
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memory/3760-950-0x0000000006CC0000-0x0000000006D52000-memory.dmpFilesize
584KB
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memory/3760-949-0x0000000006BD0000-0x0000000006C20000-memory.dmpFilesize
320KB
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memory/3760-951-0x0000000006C40000-0x0000000006C4A000-memory.dmpFilesize
40KB
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memory/3760-952-0x0000000074650000-0x0000000074E00000-memory.dmpFilesize
7.7MB
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memory/3760-953-0x0000000005920000-0x0000000005930000-memory.dmpFilesize
64KB