agenttesla | 946bf0933ae9952f715bb7405c52fe8ec4ef71bc5ace58859b1c3ae8d93e253d

Analysis

max time kernel
107s
max time network
41s
platform
windows7_x64
resource
win7v200722
submitted
03/08/2020, 12:07

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General

Target
QUATATION REQUEST..exe
Size 867KB
Sample200803-tv7dst7msa
SHA256 946bf0933ae9952f715bb7405c52fe8ec4ef71bc5ace58859b1c3ae8d93e253d
MD5 e7073bf24dd08b10a3228f587b7b2c0a
SHA1 4b5144256b1730a081397d5e497e0daa2e09de89
SHA512 8a6280021a4eac7e154ef1b9151dcad20ddfe7098b139d9f09c73e6fa68f40e6dfeaec00f9f3e3e3841e660bacf2a3539c0db6e393ea46f2eee1c9abfbf60565
MD5 SHA1 SHA512

Score

10^/10

agenttesla keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol
smtp
Host
smtp.palcoman.com
Port
587
Username
[email protected]
Password
GgwWVBJ5

Signatures

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

AgentTesla Payload 4 IoCs

resource	yara_rule
behavioral1/memory/1728-4-0x0000000000400000-0x000000000044C000-memory.dmp	family_agenttesla
behavioral1/memory/1728-5-0x000000000044748E-mapping.dmp	family_agenttesla
behavioral1/memory/1728-6-0x0000000000400000-0x000000000044C000-memory.dmp	family_agenttesla
behavioral1/memory/1728-7-0x0000000000400000-0x000000000044C000-memory.dmp	family_agenttesla

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\system32\drivers\etc\hosts	RegSvcs.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2090973689-680783404-4292415065-1000\Software\Microsoft\Windows\CurrentVersion\Run\gKWBf = "C:\\Users\\Admin\\AppData\\Roaming\\gKWBf\\gKWBf.exe"	RegSvcs.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1000 set thread context of 1728	1000	QUATATION REQUEST..exe	29

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

pid	Process
1908	schtasks.exe

Modifies registry key 1 TTPs 1 IoCs

Modify Registry

T1112

pid	Process
1560	REG.exe

Suspicious behavior: EnumeratesProcesses 9 IoCs

pid	Process
1000	QUATATION REQUEST..exe
1000	QUATATION REQUEST..exe
1000	QUATATION REQUEST..exe
1000	QUATATION REQUEST..exe
1000	QUATATION REQUEST..exe
1000	QUATATION REQUEST..exe
1000	QUATATION REQUEST..exe
1728	RegSvcs.exe
1728	RegSvcs.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1000	QUATATION REQUEST..exe
Token: SeDebugPrivilege	1728	RegSvcs.exe

Suspicious use of WriteProcessMemory 27 IoCs

description	pid	Process	procid_target
PID 1000 wrote to memory of 1908	1000	QUATATION REQUEST..exe	26
PID 1000 wrote to memory of 1908	1000	QUATATION REQUEST..exe	26
PID 1000 wrote to memory of 1908	1000	QUATATION REQUEST..exe	26
PID 1000 wrote to memory of 1908	1000	QUATATION REQUEST..exe	26
PID 1000 wrote to memory of 1800	1000	QUATATION REQUEST..exe	28
PID 1000 wrote to memory of 1800	1000	QUATATION REQUEST..exe	28
PID 1000 wrote to memory of 1800	1000	QUATATION REQUEST..exe	28
PID 1000 wrote to memory of 1800	1000	QUATATION REQUEST..exe	28
PID 1000 wrote to memory of 1800	1000	QUATATION REQUEST..exe	28
PID 1000 wrote to memory of 1800	1000	QUATATION REQUEST..exe	28
PID 1000 wrote to memory of 1800	1000	QUATATION REQUEST..exe	28
PID 1000 wrote to memory of 1728	1000	QUATATION REQUEST..exe	29
PID 1000 wrote to memory of 1728	1000	QUATATION REQUEST..exe	29
PID 1000 wrote to memory of 1728	1000	QUATATION REQUEST..exe	29
PID 1000 wrote to memory of 1728	1000	QUATATION REQUEST..exe	29
PID 1000 wrote to memory of 1728	1000	QUATATION REQUEST..exe	29
PID 1000 wrote to memory of 1728	1000	QUATATION REQUEST..exe	29
PID 1000 wrote to memory of 1728	1000	QUATATION REQUEST..exe	29
PID 1000 wrote to memory of 1728	1000	QUATATION REQUEST..exe	29
PID 1000 wrote to memory of 1728	1000	QUATATION REQUEST..exe	29
PID 1000 wrote to memory of 1728	1000	QUATATION REQUEST..exe	29
PID 1000 wrote to memory of 1728	1000	QUATATION REQUEST..exe	29
PID 1000 wrote to memory of 1728	1000	QUATATION REQUEST..exe	29
PID 1728 wrote to memory of 1560	1728	RegSvcs.exe	31
PID 1728 wrote to memory of 1560	1728	RegSvcs.exe	31
PID 1728 wrote to memory of 1560	1728	RegSvcs.exe	31
PID 1728 wrote to memory of 1560	1728	RegSvcs.exe	31

C:\Users\Admin\AppData\Local\Temp\QUATATION REQUEST..exe
"C:\Users\Admin\AppData\Local\Temp\QUATATION REQUEST..exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1000
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\&startupname&" /XML "C:\Users\Admin\AppData\Local\Temp\tmp3699.tmp"
  2⤵
  - Creates scheduled task(s)
  PID:1908
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
  "{path}"
  2⤵
  PID:1800
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
  "{path}"
  2⤵
  - Drops file in Drivers directory
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1728
- - C:\Windows\SysWOW64\REG.exe
    REG add HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\System / v DisableTaskMgr / t REG_DWORD / d 1 / f
    3⤵
    - Modifies registry key
    PID:1560

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

T1053

Persistence

Registry Run Keys / Startup Folder

T1060

Scheduled Task

T1053

Privilege Escalation

Scheduled Task

T1053

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/1728-4-0x0000000000400000-0x000000000044C000-memory.dmp

Download

memory/1728-6-0x0000000000400000-0x000000000044C000-memory.dmp

Download

memory/1728-7-0x0000000000400000-0x000000000044C000-memory.dmp

Download