Analysis
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max time kernel
144s -
max time network
153s -
platform
windows7_x64 -
resource
win7-20240611-en -
resource tags
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submitted
27-06-2024 13:35
General
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Target
a7d2ea641dbc8e50000e6b42c9cca200fa25d5e37ddd1857eb489795ab5564ee.exe
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Size
870KB
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MD5
95dc64015aa43a27412f7ff0979c5b87
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SHA1
bde0ae97f4f98c0dd8a0833702ff073befbec268
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SHA256
a7d2ea641dbc8e50000e6b42c9cca200fa25d5e37ddd1857eb489795ab5564ee
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SHA512
450a8ba7eb3c3178b5567b692d55518d393af5d971bb22ab13e1c9078c9ea389f1a9e28d391a8882ef8d1b99972ec27af64fa2c7aa8fa79c9c0d2423d0176d10
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SSDEEP
12288:XcIjd3nQIQsk3na+QiLPTEYLwdLh5d2tqnXQJgcCp8vGiVIkk84n5QWrV:XcIjUna3iLtwb/2tWXMi2rq7nHB
Malware Config
Extracted
agenttesla
Protocol: smtp- Host:
smtp.epressong.com - Port:
587 - Username:
[email protected] - Password:
nFMLKCvO3 - Email To:
[email protected]
Signatures
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AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
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Guloader,Cloudeye
A shellcode based downloader first seen in 2020.
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Loads dropped DLL 1 IoCs
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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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Looks up external IP address via web service 2 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
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Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs
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Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs
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Suspicious use of SetThreadContext 1 IoCs
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Drops file in Windows directory 1 IoCs
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Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Suspicious behavior: EnumeratesProcesses 2 IoCs
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Suspicious behavior: MapViewOfSection 1 IoCs
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Suspicious use of AdjustPrivilegeToken 1 IoCs
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Suspicious use of WriteProcessMemory 6 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\a7d2ea641dbc8e50000e6b42c9cca200fa25d5e37ddd1857eb489795ab5564ee.exe"C:\Users\Admin\AppData\Local\Temp\a7d2ea641dbc8e50000e6b42c9cca200fa25d5e37ddd1857eb489795ab5564ee.exe"1⤵
- Loads dropped DLL
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- Drops file in Windows directory
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\a7d2ea641dbc8e50000e6b42c9cca200fa25d5e37ddd1857eb489795ab5564ee.exe"C:\Users\Admin\AppData\Local\Temp\a7d2ea641dbc8e50000e6b42c9cca200fa25d5e37ddd1857eb489795ab5564ee.exe"2⤵
- Suspicious use of NtCreateThreadExHideFromDebugger
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
Network
MITRE ATT&CK Matrix ATT&CK v13
Replay Monitor
Loading Replay Monitor...
Downloads
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\Users\Admin\AppData\Local\Temp\nsy7B88.tmp\System.dllFilesize
11KB
MD555a26d7800446f1373056064c64c3ce8
SHA180256857e9a0a9c8897923b717f3435295a76002
SHA256904fd5481d72f4e03b01a455f848dedd095d0fb17e33608e0d849f5196fb6ff8
SHA51204b8ab7a85c26f188c0a06f524488d6f2ac2884bf107c860c82e94ae12c3859f825133d78338fd2b594dfc48f7dc9888ae76fee786c6252a5c77c88755128a5b
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memory/2576-25-0x0000000003860000-0x0000000006207000-memory.dmpFilesize
41.7MB
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memory/2576-26-0x00000000779D1000-0x0000000077AD2000-memory.dmpFilesize
1.0MB
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memory/2576-27-0x00000000779D0000-0x0000000077B79000-memory.dmpFilesize
1.7MB
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memory/2576-28-0x0000000003860000-0x0000000006207000-memory.dmpFilesize
41.7MB
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memory/2576-31-0x0000000003860000-0x0000000006207000-memory.dmpFilesize
41.7MB
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memory/2804-29-0x00000000779D0000-0x0000000077B79000-memory.dmpFilesize
1.7MB
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memory/2804-30-0x00000000004A0000-0x0000000001502000-memory.dmpFilesize
16.4MB
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memory/2804-33-0x00000000004A0000-0x00000000004E0000-memory.dmpFilesize
256KB