Analysis
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max time kernel
142s -
max time network
158s -
platform
windows10-2004_x64 -
resource
win10v2004-20220414-en -
submitted
21-05-2022 12:12
General
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Target
quotation,pdf.exe
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Size
938KB
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MD5
4ef80cd3ca8c2ca4a8ff0e932d68eab7
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SHA1
a6091f0320d4bb07af3dc30869e2128b3427d2d0
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SHA256
dfa3383539e38b2ee4b96d6bf2b1f89e2d1923f5fa533bb77276c09d3300e2ea
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SHA512
3217680f8d8943becd9cb5b9bf777d21e2d2b52f8971d4c1598c0367674ff7891ac7081a0600b8a5e9cebd903b82a920ef64e544f497d581cf79bcde84c569c4
Malware Config
Extracted
Protocol: smtp- Host:
smtp.1and1.mx - Port:
587 - Username:
fpalmab@marelub.com.mx - Password:
Mare1##007
Extracted
agenttesla
Protocol: smtp- Host:
smtp.1and1.mx - Port:
587 - Username:
fpalmab@marelub.com.mx - Password:
Mare1##007
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 3 IoCs
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Suspicious use of AdjustPrivilegeToken 2 IoCs
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Suspicious use of SetWindowsHookEx 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\quotation,pdf.exe"C:\Users\Admin\AppData\Local\Temp\quotation,pdf.exe"1⤵
- Checks BIOS information in registry
- Checks computer location settings
- Maps connected drives based on registry
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\KKZYIrzH" /XML "C:\Users\Admin\AppData\Local\Temp\tmp92B6.tmp"2⤵
- Creates scheduled task(s)
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C:\Users\Admin\AppData\Local\Temp\quotation,pdf.exe"C:\Users\Admin\AppData\Local\Temp\quotation,pdf.exe"2⤵
- Accesses Microsoft Outlook profiles
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- 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\quotation,pdf.exe.logFilesize
1KB
MD55200da2e50f24d5d543c3f10674acdcb
SHA1b574a3336839882d799c0a7f635ea238efb934ee
SHA256d2d81c1c9d35bc66149beaa77029bee68664d8512fc1efe373180bab77d61026
SHA51224722a7de3250a6027a411c8b79d0720554c4efd59553f54b94ab77dc21efbf3191e0912901db475f08a6e9c1855d9e9594504d80d27300097418f4384a9d9cb
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C:\Users\Admin\AppData\Local\Temp\tmp92B6.tmpFilesize
1KB
MD5e0fabea22e6eea4d234b627a0bb859eb
SHA1b247d61e54439b82496349d6ccc7d83ae2c33c31
SHA256595ef888a9e70afcba7e10bf754e24e0585c9cd494e981e76c7b4be219089eb8
SHA512da325f018d9c645b408aaa17a26ebacc54abd9781d70267bd90ef00206374216e0dc4a0602dd7a8685588b6fbd5f5abcb059e0b19fcbc3a7dcc652fa73c02903
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memory/1544-139-0x0000000008300000-0x0000000008366000-memory.dmpFilesize
408KB
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memory/1544-136-0x0000000005940000-0x00000000059D2000-memory.dmpFilesize
584KB
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memory/1544-137-0x00000000058A0000-0x00000000058AA000-memory.dmpFilesize
40KB
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memory/1544-138-0x0000000005AD0000-0x0000000005B26000-memory.dmpFilesize
344KB
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memory/1544-133-0x0000000000D80000-0x0000000000E70000-memory.dmpFilesize
960KB
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memory/1544-135-0x0000000005E50000-0x00000000063F4000-memory.dmpFilesize
5.6MB
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memory/1544-134-0x0000000005790000-0x000000000582C000-memory.dmpFilesize
624KB
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memory/2032-140-0x0000000000000000-mapping.dmp
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memory/4752-142-0x0000000000000000-mapping.dmp
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memory/4752-143-0x0000000000400000-0x0000000000466000-memory.dmpFilesize
408KB
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memory/4752-145-0x0000000006860000-0x00000000068B0000-memory.dmpFilesize
320KB