agenttesla | 2791e882cf9c19fd8485165584afdccbeac1b7a5ae1781588ea02b7e5f856602

Analysis

max time kernel
146s
max time network
45s
platform
windows7_x64
resource
win7v200430
submitted
02/07/2020, 13:27

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General

Target
invoice..exe
Size 634KB
Sample200702-8rmqbbkn7a
SHA256 2791e882cf9c19fd8485165584afdccbeac1b7a5ae1781588ea02b7e5f856602
MD5 84d9e5788b3eb0886e25add87470f9c7
SHA1 46ea388b91d174f9d20c5df37718df0b4bdd166a
SHA512 6453e8e91a14e3ad6e90c604105ca9ddb907e61729ff8c4178f5683f3e59b7201c84a10c63e78f699dd13e852eb0cb9a6c1d736b75385533c2ea67bb457dfd3e
MD5 SHA1 SHA512

Score

10^/10

agenttesla keylogger spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol
smtp
Host
mail.blc.com.np
Port
587
Username
[email protected]
Password
bhuramal

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/524-10-0x0000000000400000-0x000000000044C000-memory.dmp	family_agenttesla
behavioral1/memory/524-11-0x00000000004476EE-mapping.dmp	family_agenttesla
behavioral1/memory/524-12-0x0000000000400000-0x000000000044C000-memory.dmp	family_agenttesla
behavioral1/memory/524-13-0x0000000000400000-0x000000000044C000-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

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 1044 set thread context of 1868	1044	invoice..exe	26
PID 1868 set thread context of 524	1868	RegSvcs.exe	30

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
672	schtasks.exe

Modifies registry key 1 TTPs 1 IoCs

Modify Registry

T1112

pid	Process
612	REG.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
1868	RegSvcs.exe
524	RegSvcs.exe
524	RegSvcs.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1868	RegSvcs.exe
Token: SeDebugPrivilege	524	RegSvcs.exe

Suspicious use of WriteProcessMemory 39 IoCs

description	pid	Process	procid_target
PID 1044 wrote to memory of 1868	1044	invoice..exe	26
PID 1044 wrote to memory of 1868	1044	invoice..exe	26
PID 1044 wrote to memory of 1868	1044	invoice..exe	26
PID 1044 wrote to memory of 1868	1044	invoice..exe	26
PID 1044 wrote to memory of 1868	1044	invoice..exe	26
PID 1044 wrote to memory of 1868	1044	invoice..exe	26
PID 1044 wrote to memory of 1868	1044	invoice..exe	26
PID 1044 wrote to memory of 1868	1044	invoice..exe	26
PID 1044 wrote to memory of 1868	1044	invoice..exe	26
PID 1044 wrote to memory of 1868	1044	invoice..exe	26
PID 1044 wrote to memory of 1868	1044	invoice..exe	26
PID 1044 wrote to memory of 1868	1044	invoice..exe	26
PID 1868 wrote to memory of 672	1868	RegSvcs.exe	27
PID 1868 wrote to memory of 672	1868	RegSvcs.exe	27
PID 1868 wrote to memory of 672	1868	RegSvcs.exe	27
PID 1868 wrote to memory of 672	1868	RegSvcs.exe	27
PID 1868 wrote to memory of 568	1868	RegSvcs.exe	29
PID 1868 wrote to memory of 568	1868	RegSvcs.exe	29
PID 1868 wrote to memory of 568	1868	RegSvcs.exe	29
PID 1868 wrote to memory of 568	1868	RegSvcs.exe	29
PID 1868 wrote to memory of 568	1868	RegSvcs.exe	29
PID 1868 wrote to memory of 568	1868	RegSvcs.exe	29
PID 1868 wrote to memory of 568	1868	RegSvcs.exe	29
PID 1868 wrote to memory of 524	1868	RegSvcs.exe	30
PID 1868 wrote to memory of 524	1868	RegSvcs.exe	30
PID 1868 wrote to memory of 524	1868	RegSvcs.exe	30
PID 1868 wrote to memory of 524	1868	RegSvcs.exe	30
PID 1868 wrote to memory of 524	1868	RegSvcs.exe	30
PID 1868 wrote to memory of 524	1868	RegSvcs.exe	30
PID 1868 wrote to memory of 524	1868	RegSvcs.exe	30
PID 1868 wrote to memory of 524	1868	RegSvcs.exe	30
PID 1868 wrote to memory of 524	1868	RegSvcs.exe	30
PID 1868 wrote to memory of 524	1868	RegSvcs.exe	30
PID 1868 wrote to memory of 524	1868	RegSvcs.exe	30
PID 1868 wrote to memory of 524	1868	RegSvcs.exe	30
PID 524 wrote to memory of 612	524	RegSvcs.exe	34
PID 524 wrote to memory of 612	524	RegSvcs.exe	34
PID 524 wrote to memory of 612	524	RegSvcs.exe	34
PID 524 wrote to memory of 612	524	RegSvcs.exe	34

C:\Users\Admin\AppData\Local\Temp\invoice..exe
"C:\Users\Admin\AppData\Local\Temp\invoice..exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1044
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
  "{path}"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1868
- - C:\Windows\SysWOW64\schtasks.exe
    "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\nSmUkZhG" /XML "C:\Users\Admin\AppData\Local\Temp\tmp3E47.tmp"
    3⤵
    - Creates scheduled task(s)
    PID:672
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
    "{path}"
    3⤵
    PID:568
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
    "{path}"
    3⤵
    - Drops file in Drivers directory
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:524
  - - C:\Windows\SysWOW64\REG.exe
      REG add HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\System / v DisableTaskMgr / t REG_DWORD / d 1 / f
      4⤵
      Modifies registry key
      PID:612

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

T1053

Persistence

Scheduled Task

T1053

Privilege Escalation

Scheduled Task

T1053

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/524-10-0x0000000000400000-0x000000000044C000-memory.dmp

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memory/524-12-0x0000000000400000-0x000000000044C000-memory.dmp

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memory/524-13-0x0000000000400000-0x000000000044C000-memory.dmp

Download

memory/1868-2-0x0000000000400000-0x0000000000486000-memory.dmp

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memory/1868-4-0x0000000000400000-0x0000000000486000-memory.dmp

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memory/1868-5-0x0000000000400000-0x0000000000486000-memory.dmp

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