Analysis
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max time kernel
105s -
max time network
118s -
platform
windows10-2004_x64 -
resource
win10v2004-20220414-en -
submitted
21-05-2022 00:37
General
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Target
Quote#20200722-DOC-7483920238.pdf.exe
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Size
733KB
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MD5
3afbbc638efdf9bfb6b623a8be5ec385
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SHA1
c6ee5c6197cf089443fd671cd478f19aa5f0445e
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SHA256
0c61ccf7de2d11caa06893b4addbfe04972e18696f23e46cc424a29fbae5ae2f
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SHA512
de9fe75a1b7705b9bbba3541c3cfef43c48fc339d0572dfa6dc59bd6c39d1b9885a8194a2ad5473ee1907fbc52e05ff79e576b12367ebdec9b794da7b25b479b
Malware Config
Extracted
Protocol: smtp- Host:
smtp.yandex.com - Port:
587 - Username:
[email protected] - Password:
Sages101*
Extracted
agenttesla
Protocol: smtp- Host:
smtp.yandex.com - Port:
587 - Username:
[email protected] - Password:
Sages101*
Signatures
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AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
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AgentTesla Payload 1 IoCs
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Looks for VirtualBox Guest Additions in registry 2 TTPs
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Looks for VMWare Tools registry key 2 TTPs
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Checks BIOS information in registry 2 TTPs 2 IoCs
BIOS information is often read in order to detect sandboxing environments.
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Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
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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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Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
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Maps connected drives based on registry 3 TTPs 2 IoCs
Disk information is often read in order to detect sandboxing environments.
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Suspicious use of SetThreadContext 1 IoCs
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Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
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Suspicious behavior: EnumeratesProcesses 2 IoCs
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Suspicious use of AdjustPrivilegeToken 1 IoCs
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Suspicious use of WriteProcessMemory 11 IoCs
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outlook_office_path 1 IoCs
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outlook_win_path 1 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\Quote#20200722-DOC-7483920238.pdf.exe"C:\Users\Admin\AppData\Local\Temp\Quote#20200722-DOC-7483920238.pdf.exe"1⤵
- Checks BIOS information in registry
- Checks computer location settings
- Maps connected drives based on registry
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\wuyfxU" /XML "C:\Users\Admin\AppData\Local\Temp\tmp6A14.tmp"2⤵
- Creates scheduled task(s)
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C:\Users\Admin\AppData\Local\Temp\Quote#20200722-DOC-7483920238.pdf.exe"{path}"2⤵
- Accesses Microsoft Outlook profiles
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
Loading Replay Monitor...
Downloads
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C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\Quote#20200722-DOC-7483920238.pdf.exe.logFilesize
599B
MD5b98b34a0939a52075c19959d5564e798
SHA1cbaaa2e88b48648b9875afac8f33b4c30703378e
SHA256937899941aa7d74e757dae8ccf5b05a0e2d9452b735cfb91d285e5415dd5e852
SHA5127fb6692f780abbbc099bde1b42721d71acce0c0b8cea0cd0b5c1f07c4152fb1a1a1d99ed452ef2c01523d0653f177e66a7232712e5a70cc1468ddc9ad556a3d3
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C:\Users\Admin\AppData\Local\Temp\tmp6A14.tmpFilesize
1KB
MD596e468c938fd0da67069e3d16dbd0bd2
SHA1e24d6841fa006d0145653791c931c2a65ab4eda2
SHA25603c9f032a56928666084ac1fae49666303e00ba390c4f3d6149e3f572819b92f
SHA512cb243c8e34e0ed7310bda18b881d27d17322ace6391be1bc2b7ae1f48615894795e42e7a34530524b583f0d79ed6c9ad6ef37d96cecc8a49765fcc481141382e
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memory/1976-135-0x0000000000000000-mapping.dmp
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memory/3660-137-0x0000000000000000-mapping.dmp
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memory/3660-138-0x0000000000400000-0x000000000044C000-memory.dmpFilesize
304KB
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memory/3660-140-0x0000000006D20000-0x0000000006D70000-memory.dmpFilesize
320KB
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memory/3660-141-0x00000000071B0000-0x00000000071BA000-memory.dmpFilesize
40KB
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memory/4344-130-0x0000000000410000-0x00000000004CE000-memory.dmpFilesize
760KB
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memory/4344-131-0x0000000004E10000-0x0000000004EAC000-memory.dmpFilesize
624KB
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memory/4344-132-0x0000000004F70000-0x0000000005002000-memory.dmpFilesize
584KB
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memory/4344-133-0x0000000005BE0000-0x0000000006184000-memory.dmpFilesize
5.6MB
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memory/4344-134-0x0000000005630000-0x0000000005696000-memory.dmpFilesize
408KB