Analysis
-
max time kernel
101s -
max time network
138s -
platform
windows10-2004_x64 -
resource
win10v2004-20220414-en -
submitted
21-05-2022 00:28
Static task
static1
Behavioral task
behavioral1
Sample
oCuh3V3aoPBhwtd.exe
Resource
win7-20220414-en
Behavioral task
behavioral2
Sample
oCuh3V3aoPBhwtd.exe
Resource
win10v2004-20220414-en
General
-
Target
oCuh3V3aoPBhwtd.exe
-
Size
562KB
-
MD5
55f13cb30ae279d01c841d5d1df254a5
-
SHA1
d5c921d2852869fe6a56b044280edf0b18c2fc3b
-
SHA256
141f6b77ca73edeb173fee8e7d07dcf4655a6160c47e471ba6939a3807ec258c
-
SHA512
614738b95e4781cc792311fc411bf5b011f4690666f312f2b7472e026ef98fc64a010f61992bfcc32620dbbf55f3fdd73038a665914ecde433b432111498cb36
Malware Config
Extracted
agenttesla
Protocol: smtp- Host:
smtp.aiotecs.com - Port:
587 - Username:
[email protected] - Password:
IWDma!*4
Signatures
-
AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
-
AgentTesla Payload 1 IoCs
Processes:
resource yara_rule behavioral2/memory/1244-138-0x0000000000400000-0x000000000044C000-memory.dmp family_agenttesla -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
oCuh3V3aoPBhwtd.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\Control Panel\International\Geo\Nation oCuh3V3aoPBhwtd.exe -
Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
-
Reads user/profile data of local email clients 2 TTPs
Email clients store some user data on disk where infostealers will often target it.
-
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
-
Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
Processes:
oCuh3V3aoPBhwtd.exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 oCuh3V3aoPBhwtd.exe Key opened \REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 oCuh3V3aoPBhwtd.exe Key opened \REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 oCuh3V3aoPBhwtd.exe -
Suspicious use of SetThreadContext 1 IoCs
Processes:
oCuh3V3aoPBhwtd.exedescription pid process target process PID 1684 set thread context of 1244 1684 oCuh3V3aoPBhwtd.exe oCuh3V3aoPBhwtd.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
-
Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
-
Suspicious behavior: EnumeratesProcesses 6 IoCs
Processes:
oCuh3V3aoPBhwtd.exeoCuh3V3aoPBhwtd.exepid process 1684 oCuh3V3aoPBhwtd.exe 1684 oCuh3V3aoPBhwtd.exe 1684 oCuh3V3aoPBhwtd.exe 1684 oCuh3V3aoPBhwtd.exe 1244 oCuh3V3aoPBhwtd.exe 1244 oCuh3V3aoPBhwtd.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
Processes:
oCuh3V3aoPBhwtd.exeoCuh3V3aoPBhwtd.exedescription pid process Token: SeDebugPrivilege 1684 oCuh3V3aoPBhwtd.exe Token: SeDebugPrivilege 1244 oCuh3V3aoPBhwtd.exe -
Suspicious use of WriteProcessMemory 11 IoCs
Processes:
oCuh3V3aoPBhwtd.exedescription pid process target process PID 1684 wrote to memory of 4788 1684 oCuh3V3aoPBhwtd.exe schtasks.exe PID 1684 wrote to memory of 4788 1684 oCuh3V3aoPBhwtd.exe schtasks.exe PID 1684 wrote to memory of 4788 1684 oCuh3V3aoPBhwtd.exe schtasks.exe PID 1684 wrote to memory of 1244 1684 oCuh3V3aoPBhwtd.exe oCuh3V3aoPBhwtd.exe PID 1684 wrote to memory of 1244 1684 oCuh3V3aoPBhwtd.exe oCuh3V3aoPBhwtd.exe PID 1684 wrote to memory of 1244 1684 oCuh3V3aoPBhwtd.exe oCuh3V3aoPBhwtd.exe PID 1684 wrote to memory of 1244 1684 oCuh3V3aoPBhwtd.exe oCuh3V3aoPBhwtd.exe PID 1684 wrote to memory of 1244 1684 oCuh3V3aoPBhwtd.exe oCuh3V3aoPBhwtd.exe PID 1684 wrote to memory of 1244 1684 oCuh3V3aoPBhwtd.exe oCuh3V3aoPBhwtd.exe PID 1684 wrote to memory of 1244 1684 oCuh3V3aoPBhwtd.exe oCuh3V3aoPBhwtd.exe PID 1684 wrote to memory of 1244 1684 oCuh3V3aoPBhwtd.exe oCuh3V3aoPBhwtd.exe -
outlook_office_path 1 IoCs
Processes:
oCuh3V3aoPBhwtd.exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 oCuh3V3aoPBhwtd.exe -
outlook_win_path 1 IoCs
Processes:
oCuh3V3aoPBhwtd.exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 oCuh3V3aoPBhwtd.exe
Processes
-
C:\Users\Admin\AppData\Local\Temp\oCuh3V3aoPBhwtd.exe"C:\Users\Admin\AppData\Local\Temp\oCuh3V3aoPBhwtd.exe"1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\&startupname&" /XML "C:\Users\Admin\AppData\Local\Temp\tmp8D8A.tmp"2⤵
- Creates scheduled task(s)
-
C:\Users\Admin\AppData\Local\Temp\oCuh3V3aoPBhwtd.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
-
C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\oCuh3V3aoPBhwtd.exe.logFilesize
1KB
MD58ec831f3e3a3f77e4a7b9cd32b48384c
SHA1d83f09fd87c5bd86e045873c231c14836e76a05c
SHA2567667e538030e3f8ce2886e47a01af24cb0ea70528b1e821c5d8832c5076cb982
SHA51226bffa2406b66368bd412bf25869a792631455645992cdcade2dbc13a2e56fb546414a6a9223b94c96c38d89187add6678d4779a88b38b0c9e36be8527b213c3
-
C:\Users\Admin\AppData\Local\Temp\tmp8D8A.tmpFilesize
1KB
MD5ab9f8a9574d9209cd8666decb37e33cc
SHA1b768b98d37b96bcf5eeeb4bae10589a196b66db2
SHA2562c052172f943620c36053efd2ab1d6ef9fbb671c55669b9f49430f0f7acd7704
SHA5125059538580cce17a2c7516e3117297310455e38ff32d51c6e17ef188448ce3567f9c968ad478df725ed2ce8630ceee2340246264a6e60877895591a67d45da70
-
memory/1244-137-0x0000000000000000-mapping.dmp
-
memory/1244-138-0x0000000000400000-0x000000000044C000-memory.dmpFilesize
304KB
-
memory/1244-140-0x0000000006380000-0x00000000063E6000-memory.dmpFilesize
408KB
-
memory/1244-141-0x0000000006970000-0x00000000069C0000-memory.dmpFilesize
320KB
-
memory/1684-130-0x00000000000D0000-0x0000000000162000-memory.dmpFilesize
584KB
-
memory/1684-131-0x0000000005070000-0x0000000005614000-memory.dmpFilesize
5.6MB
-
memory/1684-132-0x0000000004B60000-0x0000000004BF2000-memory.dmpFilesize
584KB
-
memory/1684-133-0x0000000004B10000-0x0000000004B1A000-memory.dmpFilesize
40KB
-
memory/1684-134-0x0000000008550000-0x00000000085EC000-memory.dmpFilesize
624KB
-
memory/4788-135-0x0000000000000000-mapping.dmp