Analysis
-
max time kernel
135s -
max time network
127s -
platform
windows10-2004_x64 -
resource
win10v2004-20240226-en -
resource tags
arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system -
submitted
18-03-2024 19:30
Static task
static1
Behavioral task
behavioral1
Sample
27.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
27.exe
Resource
win10v2004-20240226-en
General
-
Target
27.exe
-
Size
521KB
-
MD5
b29fbc48ad3305f4dcab0be3145682a6
-
SHA1
73152dd5e9cdf69d7ae9ff114aa818b2ec0decfb
-
SHA256
104ae348871545562f1f0a2712ddb88659fda045dd969affd79fbdc25fc7e2fd
-
SHA512
5111621a6bfd323812eed98e1053bde36598c1fb719e7c401a090d5ee679aee02f59d0337cf0f4fed780fbb4550add1cf812203e59efedb531081cf43931e838
-
SSDEEP
12288:zbiKz52aC1sP906WMPTxgt8UnlQJAHCUkO/tRqUjRQ1F5CZTAujRM:Tl2af9061uKyOJCCUb7qUjRQsN
Malware Config
Extracted
Protocol: smtp- Host:
mail.processengrg.com - Port:
587 - Username:
[email protected] - Password:
Bigbrain2022#
Extracted
agenttesla
Protocol: smtp- Host:
mail.processengrg.com - Port:
587 - Username:
[email protected] - Password:
Bigbrain2022# - Email To:
[email protected]
Signatures
-
AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
-
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.
-
Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-399997616-3400990511-967324271-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\KaGeys = "C:\\Users\\Admin\\AppData\\Roaming\\KaGeys\\KaGeys.exe" 27.exe -
Looks up external IP address via web service 3 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
flow ioc 31 api.ipify.org 34 ip-api.com 30 api.ipify.org -
Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 1952 set thread context of 1404 1952 27.exe 89 -
Suspicious behavior: EnumeratesProcesses 2 IoCs
pid Process 1404 27.exe 1404 27.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 1404 27.exe -
Suspicious use of WriteProcessMemory 8 IoCs
description pid Process procid_target PID 1952 wrote to memory of 1404 1952 27.exe 89 PID 1952 wrote to memory of 1404 1952 27.exe 89 PID 1952 wrote to memory of 1404 1952 27.exe 89 PID 1952 wrote to memory of 1404 1952 27.exe 89 PID 1952 wrote to memory of 1404 1952 27.exe 89 PID 1952 wrote to memory of 1404 1952 27.exe 89 PID 1952 wrote to memory of 1404 1952 27.exe 89 PID 1952 wrote to memory of 1404 1952 27.exe 89
Processes
-
C:\Users\Admin\AppData\Local\Temp\27.exe"C:\Users\Admin\AppData\Local\Temp\27.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1952 -
C:\Users\Admin\AppData\Local\Temp\27.exe"C:\Users\Admin\AppData\Local\Temp\27.exe"2⤵
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1404
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
-
Filesize
706B
MD5f8bcaf312de8591707436c1dcebba8e4
SHA1a1269828e5f644601622f4a7a611aec8f2eda0b2
SHA256f0f5a90777c70cdceea22bd66b33c1703a318acc45cb012d0b01585a1ac12b29
SHA5123a714f5950584abbc94a27bbd4623bfc5acb1135c8c9fca4d74e70c8481b71ace7dbc1dfbf101dd07c76a050acfb4852f31dd57fc7ae196382336c5edc9e6413