Analysis
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max time kernel
145s -
max time network
149s -
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 17:21
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/3076-3-0x00000000050E0000-0x000000000518A000-memory.dmp family_zgrat_v1 behavioral2/memory/3076-4-0x00000000050E0000-0x0000000005184000-memory.dmp family_zgrat_v1 behavioral2/memory/3076-7-0x00000000050E0000-0x0000000005184000-memory.dmp family_zgrat_v1 behavioral2/memory/3076-5-0x00000000050E0000-0x0000000005184000-memory.dmp family_zgrat_v1 behavioral2/memory/3076-17-0x00000000050E0000-0x0000000005184000-memory.dmp family_zgrat_v1 behavioral2/memory/3076-19-0x00000000050E0000-0x0000000005184000-memory.dmp family_zgrat_v1 behavioral2/memory/3076-15-0x00000000050E0000-0x0000000005184000-memory.dmp family_zgrat_v1 behavioral2/memory/3076-13-0x00000000050E0000-0x0000000005184000-memory.dmp family_zgrat_v1 behavioral2/memory/3076-11-0x00000000050E0000-0x0000000005184000-memory.dmp family_zgrat_v1 behavioral2/memory/3076-27-0x00000000050E0000-0x0000000005184000-memory.dmp family_zgrat_v1 behavioral2/memory/3076-33-0x00000000050E0000-0x0000000005184000-memory.dmp family_zgrat_v1 behavioral2/memory/3076-39-0x00000000050E0000-0x0000000005184000-memory.dmp family_zgrat_v1 behavioral2/memory/3076-41-0x00000000050E0000-0x0000000005184000-memory.dmp family_zgrat_v1 behavioral2/memory/3076-37-0x00000000050E0000-0x0000000005184000-memory.dmp family_zgrat_v1 behavioral2/memory/3076-35-0x00000000050E0000-0x0000000005184000-memory.dmp family_zgrat_v1 behavioral2/memory/3076-31-0x00000000050E0000-0x0000000005184000-memory.dmp family_zgrat_v1 behavioral2/memory/3076-45-0x00000000050E0000-0x0000000005184000-memory.dmp family_zgrat_v1 behavioral2/memory/3076-47-0x00000000050E0000-0x0000000005184000-memory.dmp family_zgrat_v1 behavioral2/memory/3076-53-0x00000000050E0000-0x0000000005184000-memory.dmp family_zgrat_v1 behavioral2/memory/3076-57-0x00000000050E0000-0x0000000005184000-memory.dmp family_zgrat_v1 behavioral2/memory/3076-65-0x00000000050E0000-0x0000000005184000-memory.dmp family_zgrat_v1 behavioral2/memory/3076-67-0x00000000050E0000-0x0000000005184000-memory.dmp family_zgrat_v1 behavioral2/memory/3076-63-0x00000000050E0000-0x0000000005184000-memory.dmp family_zgrat_v1 behavioral2/memory/3076-61-0x00000000050E0000-0x0000000005184000-memory.dmp family_zgrat_v1 behavioral2/memory/3076-59-0x00000000050E0000-0x0000000005184000-memory.dmp family_zgrat_v1 behavioral2/memory/3076-55-0x00000000050E0000-0x0000000005184000-memory.dmp family_zgrat_v1 behavioral2/memory/3076-51-0x00000000050E0000-0x0000000005184000-memory.dmp family_zgrat_v1 behavioral2/memory/3076-49-0x00000000050E0000-0x0000000005184000-memory.dmp family_zgrat_v1 behavioral2/memory/3076-43-0x00000000050E0000-0x0000000005184000-memory.dmp family_zgrat_v1 behavioral2/memory/3076-29-0x00000000050E0000-0x0000000005184000-memory.dmp family_zgrat_v1 behavioral2/memory/3076-25-0x00000000050E0000-0x0000000005184000-memory.dmp family_zgrat_v1 behavioral2/memory/3076-23-0x00000000050E0000-0x0000000005184000-memory.dmp family_zgrat_v1 behavioral2/memory/3076-21-0x00000000050E0000-0x0000000005184000-memory.dmp family_zgrat_v1 behavioral2/memory/3076-9-0x00000000050E0000-0x0000000005184000-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-1-5-21-1168293393-3419776239-306423207-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Gvhfx = "C:\\Users\\Admin\\AppData\\Roaming\\Gvhfx.exe" SKM_C3350191107102XXX024.exe Set value (str) \REGISTRY\USER\S-1-5-21-1168293393-3419776239-306423207-1000\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 15 api.ipify.org 16 api.ipify.org -
Suspicious use of SetThreadContext 1 IoCs
Processes:
SKM_C3350191107102XXX024.exedescription pid process target process PID 3076 set thread context of 4560 3076 SKM_C3350191107102XXX024.exe RegAsm.exe -
Suspicious behavior: EnumeratesProcesses 2 IoCs
Processes:
RegAsm.exepid process 4560 RegAsm.exe 4560 RegAsm.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
Processes:
SKM_C3350191107102XXX024.exeRegAsm.exedescription pid process Token: SeDebugPrivilege 3076 SKM_C3350191107102XXX024.exe Token: SeDebugPrivilege 4560 RegAsm.exe -
Suspicious use of WriteProcessMemory 8 IoCs
Processes:
SKM_C3350191107102XXX024.exedescription pid process target process PID 3076 wrote to memory of 4560 3076 SKM_C3350191107102XXX024.exe RegAsm.exe PID 3076 wrote to memory of 4560 3076 SKM_C3350191107102XXX024.exe RegAsm.exe PID 3076 wrote to memory of 4560 3076 SKM_C3350191107102XXX024.exe RegAsm.exe PID 3076 wrote to memory of 4560 3076 SKM_C3350191107102XXX024.exe RegAsm.exe PID 3076 wrote to memory of 4560 3076 SKM_C3350191107102XXX024.exe RegAsm.exe PID 3076 wrote to memory of 4560 3076 SKM_C3350191107102XXX024.exe RegAsm.exe PID 3076 wrote to memory of 4560 3076 SKM_C3350191107102XXX024.exe RegAsm.exe PID 3076 wrote to memory of 4560 3076 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:3076 -
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:4560
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
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memory/3076-0-0x00000000006E0000-0x0000000000896000-memory.dmpFilesize
1.7MB
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memory/3076-1-0x00000000751B0000-0x0000000075960000-memory.dmpFilesize
7.7MB
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memory/3076-2-0x0000000005220000-0x0000000005230000-memory.dmpFilesize
64KB
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memory/3076-3-0x00000000050E0000-0x000000000518A000-memory.dmpFilesize
680KB
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memory/3076-4-0x00000000050E0000-0x0000000005184000-memory.dmpFilesize
656KB
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memory/3076-7-0x00000000050E0000-0x0000000005184000-memory.dmpFilesize
656KB
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memory/3076-5-0x00000000050E0000-0x0000000005184000-memory.dmpFilesize
656KB
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memory/3076-17-0x00000000050E0000-0x0000000005184000-memory.dmpFilesize
656KB
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memory/3076-19-0x00000000050E0000-0x0000000005184000-memory.dmpFilesize
656KB
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memory/3076-15-0x00000000050E0000-0x0000000005184000-memory.dmpFilesize
656KB
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memory/3076-13-0x00000000050E0000-0x0000000005184000-memory.dmpFilesize
656KB
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memory/3076-11-0x00000000050E0000-0x0000000005184000-memory.dmpFilesize
656KB
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memory/3076-27-0x00000000050E0000-0x0000000005184000-memory.dmpFilesize
656KB
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memory/3076-33-0x00000000050E0000-0x0000000005184000-memory.dmpFilesize
656KB
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memory/3076-39-0x00000000050E0000-0x0000000005184000-memory.dmpFilesize
656KB
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memory/3076-41-0x00000000050E0000-0x0000000005184000-memory.dmpFilesize
656KB
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memory/3076-37-0x00000000050E0000-0x0000000005184000-memory.dmpFilesize
656KB
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memory/3076-35-0x00000000050E0000-0x0000000005184000-memory.dmpFilesize
656KB
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memory/3076-31-0x00000000050E0000-0x0000000005184000-memory.dmpFilesize
656KB
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memory/3076-45-0x00000000050E0000-0x0000000005184000-memory.dmpFilesize
656KB
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memory/3076-47-0x00000000050E0000-0x0000000005184000-memory.dmpFilesize
656KB
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memory/3076-53-0x00000000050E0000-0x0000000005184000-memory.dmpFilesize
656KB
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memory/3076-57-0x00000000050E0000-0x0000000005184000-memory.dmpFilesize
656KB
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memory/3076-65-0x00000000050E0000-0x0000000005184000-memory.dmpFilesize
656KB
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memory/3076-67-0x00000000050E0000-0x0000000005184000-memory.dmpFilesize
656KB
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memory/3076-63-0x00000000050E0000-0x0000000005184000-memory.dmpFilesize
656KB
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memory/3076-61-0x00000000050E0000-0x0000000005184000-memory.dmpFilesize
656KB
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memory/3076-59-0x00000000050E0000-0x0000000005184000-memory.dmpFilesize
656KB
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memory/3076-55-0x00000000050E0000-0x0000000005184000-memory.dmpFilesize
656KB
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memory/3076-51-0x00000000050E0000-0x0000000005184000-memory.dmpFilesize
656KB
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memory/3076-49-0x00000000050E0000-0x0000000005184000-memory.dmpFilesize
656KB
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memory/3076-43-0x00000000050E0000-0x0000000005184000-memory.dmpFilesize
656KB
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memory/3076-29-0x00000000050E0000-0x0000000005184000-memory.dmpFilesize
656KB
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memory/3076-25-0x00000000050E0000-0x0000000005184000-memory.dmpFilesize
656KB
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memory/3076-23-0x00000000050E0000-0x0000000005184000-memory.dmpFilesize
656KB
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memory/3076-21-0x00000000050E0000-0x0000000005184000-memory.dmpFilesize
656KB
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memory/3076-9-0x00000000050E0000-0x0000000005184000-memory.dmpFilesize
656KB
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memory/3076-936-0x00000000051B0000-0x00000000051B1000-memory.dmpFilesize
4KB
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memory/3076-938-0x0000000005290000-0x00000000052DC000-memory.dmpFilesize
304KB
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memory/3076-937-0x0000000005250000-0x0000000005292000-memory.dmpFilesize
264KB
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memory/3076-939-0x0000000005C40000-0x00000000061E4000-memory.dmpFilesize
5.6MB
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memory/3076-943-0x00000000751B0000-0x0000000075960000-memory.dmpFilesize
7.7MB
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memory/4560-945-0x00000000751B0000-0x0000000075960000-memory.dmpFilesize
7.7MB
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memory/4560-944-0x0000000000400000-0x0000000000442000-memory.dmpFilesize
264KB
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memory/4560-946-0x0000000004EE0000-0x0000000004F46000-memory.dmpFilesize
408KB
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memory/4560-949-0x0000000006510000-0x00000000065A2000-memory.dmpFilesize
584KB
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memory/4560-948-0x0000000006420000-0x0000000006470000-memory.dmpFilesize
320KB
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memory/4560-950-0x0000000006490000-0x000000000649A000-memory.dmpFilesize
40KB
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memory/4560-951-0x00000000751B0000-0x0000000075960000-memory.dmpFilesize
7.7MB
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memory/4560-952-0x0000000004ED0000-0x0000000004EE0000-memory.dmpFilesize
64KB