agenttesla | 765f75f9583e895fb800aefa190462861032e1b7b7f3320a2c6e40363211674c

General

Target

SKM_C3350191107102300.exe
Size

625KB
MD5

9d65b55f99601ea8e2c631433ccbf1de
SHA1

59e3eec27abd3d9d53c5d115bee0629e1f8106e8
SHA256

e57b3fac2ff014d32527f235abf0efc4ddf672cc3781b1d5964bd635ed21cdf6
SHA512

6474da050f5126c80fe16dc6b00db6c03e3efaa32a483bef869e744e98e135ffac190182c925e44f91afe3515f317b7e38e18b163bef41a64ac338ed4ea9f294

Score

10^/10

agenttesla collection keylogger persistence spyware stealer trojan

Malware Config

Extracted

Credentials

Protocol: smtp
Host:
smtp.yandex.ru
Port:
587
Username:
[email protected]
Password:
bigboy5570@@@@

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
smtp.yandex.ru
Port:
587
Username:
[email protected]
Password:
bigboy5570@@@@

Signatures

AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
keylogger trojan stealer spyware agenttesla

AgentTesla Payload 1 IoCs

Processes:

resource	yara_rule
behavioral2/memory/3188-134-0x0000000000400000-0x0000000000458000-memory.dmp	family_agenttesla

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

Processes:

SKM_C3350191107102300.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\Control Panel\International\Geo\Nation	SKM_C3350191107102300.exe

Reads user/profile data of local email clients 2 TTPs
Email clients store some user data on disk where infostealers will often target it.
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

Processes:

SKM_C3350191107102300.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	SKM_C3350191107102300.exe
Key opened	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	SKM_C3350191107102300.exe
Key opened	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	SKM_C3350191107102300.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

SKM_C3350191107102300.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\BAVLA = "C:\\Users\\Admin\\AppData\\Roaming\\BAVLA\\BAVLA.exe"	SKM_C3350191107102300.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

SKM_C3350191107102300.exe

description pid process target process

PID 2340 set thread context of 3188 2340 SKM_C3350191107102300.exe SKM_C3350191107102300.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082
Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
persistence

Scheduled Task
T1053

Processes:

schtasks.exe

pid process

64 schtasks.exe

description	pid	process	target process
PID 2340 set thread context of 3188	2340	SKM_C3350191107102300.exe	SKM_C3350191107102300.exe

pid	process
64	schtasks.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

Processes:

SKM_C3350191107102300.exeSKM_C3350191107102300.exe

pid	process
2340	SKM_C3350191107102300.exe
2340	SKM_C3350191107102300.exe
2340	SKM_C3350191107102300.exe
2340	SKM_C3350191107102300.exe
3188	SKM_C3350191107102300.exe
3188	SKM_C3350191107102300.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

SKM_C3350191107102300.exeSKM_C3350191107102300.exe

description pid process

Token: SeDebugPrivilege 2340 SKM_C3350191107102300.exe
Token: SeDebugPrivilege 3188 SKM_C3350191107102300.exe

description	pid	process
Token: SeDebugPrivilege	2340	SKM_C3350191107102300.exe
Token: SeDebugPrivilege	3188	SKM_C3350191107102300.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

SKM_C3350191107102300.exe

description	pid	process	target process
PID 2340 wrote to memory of 64	2340	SKM_C3350191107102300.exe	schtasks.exe
PID 2340 wrote to memory of 64	2340	SKM_C3350191107102300.exe	schtasks.exe
PID 2340 wrote to memory of 64	2340	SKM_C3350191107102300.exe	schtasks.exe
PID 2340 wrote to memory of 3188	2340	SKM_C3350191107102300.exe	SKM_C3350191107102300.exe
PID 2340 wrote to memory of 3188	2340	SKM_C3350191107102300.exe	SKM_C3350191107102300.exe
PID 2340 wrote to memory of 3188	2340	SKM_C3350191107102300.exe	SKM_C3350191107102300.exe
PID 2340 wrote to memory of 3188	2340	SKM_C3350191107102300.exe	SKM_C3350191107102300.exe
PID 2340 wrote to memory of 3188	2340	SKM_C3350191107102300.exe	SKM_C3350191107102300.exe
PID 2340 wrote to memory of 3188	2340	SKM_C3350191107102300.exe	SKM_C3350191107102300.exe
PID 2340 wrote to memory of 3188	2340	SKM_C3350191107102300.exe	SKM_C3350191107102300.exe
PID 2340 wrote to memory of 3188	2340	SKM_C3350191107102300.exe	SKM_C3350191107102300.exe

outlook_office_path 1 IoCs

Processes:

SKM_C3350191107102300.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	SKM_C3350191107102300.exe

outlook_win_path 1 IoCs

Processes:

SKM_C3350191107102300.exe

description	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	SKM_C3350191107102300.exe

C:\Users\Admin\AppData\Local\Temp\SKM_C3350191107102300.exe
"C:\Users\Admin\AppData\Local\Temp\SKM_C3350191107102300.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2340
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\QWkGeKGc" /XML "C:\Users\Admin\AppData\Local\Temp\tmp468E.tmp"
  2⤵
  - Creates scheduled task(s)
  PID:64
- C:\Users\Admin\AppData\Local\Temp\SKM_C3350191107102300.exe
  "{path}"
  2⤵
  - Accesses Microsoft Outlook profiles
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - outlook_office_path
  - outlook_win_path
  PID:3188

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

1

T1053

Persistence

Registry Run Keys / Startup Folder

Scheduled Task

Privilege Escalation

Scheduled Task

1

T1053

Defense Evasion

Modify Registry

1

T1112

Credential Access

Credentials in Files

2

T1081

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Data from Local System

Email Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v2.0_32\UsageLogs\SKM_C3350191107102300.exe.log

Filesize
496B

MD5
cb76b18ebed3a9f05a14aed43d35fba6

SHA1
836a4b4e351846fca08b84149cb734cb59b8c0d6

SHA256
8d0edecf54cbbdf7981c8e41a3ed8621503188a87415f9af0fb8d890b138c349

SHA512
7631141e4a6dda29452ada666326837372cd3d045f773006f63d9eff15d9432ed00029d9108a72c1a3b858377600a2aab2c9ec03764285c8801b6019babcf21c

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp468E.tmp

Filesize
1KB

MD5
b51e261af5349d308f5a4f0d3b88460d

SHA1
5fbeb5330b01c724c12d712fffb8a2cc53a70b97

SHA256
721b8176e79443dd364ed42cc79a6159277f9fd380471f772781e21e181fefc4

SHA512
e288dbe75ef9b74d4e560036f9b079ed542c9ae7a98984071b11c6305415deee05152e78466bbfbe57b8107ea2291f0a99a61f3d2892546b46f9f4afe1be34e2

Download Submit
memory/64-131-0x0000000000000000-mapping.dmp

Download
memory/2340-130-0x0000000075330000-0x00000000758E1000-memory.dmp

Filesize
5.7MB

Download
memory/3188-133-0x0000000000000000-mapping.dmp

Download
memory/3188-134-0x0000000000400000-0x0000000000458000-memory.dmp

Filesize
352KB

Download
memory/3188-136-0x0000000075330000-0x00000000758E1000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads