agenttesla | ebe52ea7df6472fc812bbb2d9781d42f1262ce97193e080f76c3a7782c789cc4

Analysis

max time kernel
120s
max time network
115s
platform
windows10_x64
resource
win10v20201028
submitted
31/03/2021, 07:05

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General

Target
DHL Docs.pdf.exe
Size 913KB
Sample210331-nzrql2fdvx
SHA256 ebe52ea7df6472fc812bbb2d9781d42f1262ce97193e080f76c3a7782c789cc4
MD5 bc8224bef262fde68cd00e1a789cb923
SHA1 4bed7addfe088f9b979abc32e0789f84e63d74b4
SHA512 60189e9fcaa8c6ed8ea05047e62a904cd869f284eb0593ba50bfcb20098b7a554962665977566a7a490929653cf8250a72a7397bab86070d1f6b231048818810
MD5 SHA1 SHA512

Score

10^/10

agenttesla keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol
smtp
Host
smtp.zuarakltd.com
Port
587
Username
[email protected]
Password
max@#1235

Signatures

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

AgentTesla Payload 2 IoCs

resource	yara_rule
behavioral2/memory/996-31-0x0000000000400000-0x000000000043C000-memory.dmp	family_agenttesla
behavioral2/memory/996-32-0x00000000004374CE-mapping.dmp	family_agenttesla

Executes dropped EXE 2 IoCs

pid	Process
1280	jo.exe
996	jo.exe

Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081
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

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-3341490333-719741536-2920803124-1000\Software\Microsoft\Windows\CurrentVersion\Run	reg.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3341490333-719741536-2920803124-1000\Software\Microsoft\Windows\CurrentVersion\Run\jo = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\Windows\\Start Menu\\Programs\\jo.exe"	reg.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1280 set thread context of 996	1280	jo.exe	83

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 21 IoCs

pid	Process
4092	DHL Docs.pdf.exe
4092	DHL Docs.pdf.exe
4092	DHL Docs.pdf.exe
4092	DHL Docs.pdf.exe
4092	DHL Docs.pdf.exe
4092	DHL Docs.pdf.exe
4092	DHL Docs.pdf.exe
4092	DHL Docs.pdf.exe
4092	DHL Docs.pdf.exe
4092	DHL Docs.pdf.exe
4092	DHL Docs.pdf.exe
4092	DHL Docs.pdf.exe
4092	DHL Docs.pdf.exe
4092	DHL Docs.pdf.exe
4092	DHL Docs.pdf.exe
4092	DHL Docs.pdf.exe
4092	DHL Docs.pdf.exe
1280	jo.exe
1280	jo.exe
996	jo.exe
996	jo.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	4092	DHL Docs.pdf.exe
Token: SeDebugPrivilege	1280	jo.exe
Token: SeDebugPrivilege	996	jo.exe

Suspicious use of WriteProcessMemory 17 IoCs

description	pid	Process	procid_target
PID 4092 wrote to memory of 3176	4092	DHL Docs.pdf.exe	78
PID 4092 wrote to memory of 3176	4092	DHL Docs.pdf.exe	78
PID 4092 wrote to memory of 3176	4092	DHL Docs.pdf.exe	78
PID 3176 wrote to memory of 2112	3176	cmd.exe	80
PID 3176 wrote to memory of 2112	3176	cmd.exe	80
PID 3176 wrote to memory of 2112	3176	cmd.exe	80
PID 4092 wrote to memory of 1280	4092	DHL Docs.pdf.exe	81
PID 4092 wrote to memory of 1280	4092	DHL Docs.pdf.exe	81
PID 4092 wrote to memory of 1280	4092	DHL Docs.pdf.exe	81
PID 1280 wrote to memory of 996	1280	jo.exe	83
PID 1280 wrote to memory of 996	1280	jo.exe	83
PID 1280 wrote to memory of 996	1280	jo.exe	83
PID 1280 wrote to memory of 996	1280	jo.exe	83
PID 1280 wrote to memory of 996	1280	jo.exe	83
PID 1280 wrote to memory of 996	1280	jo.exe	83
PID 1280 wrote to memory of 996	1280	jo.exe	83
PID 1280 wrote to memory of 996	1280	jo.exe	83

C:\Users\Admin\AppData\Local\Temp\DHL Docs.pdf.exe
"C:\Users\Admin\AppData\Local\Temp\DHL Docs.pdf.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4092
- C:\Windows\SysWOW64\cmd.exe
  "cmd.exe" /c REG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /f /v "jo" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\jo.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3176
- - C:\Windows\SysWOW64\reg.exe
    REG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /f /v "jo" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\jo.exe"
    3⤵
    - Adds Run key to start application
    PID:2112
- C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\jo.exe
  "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\jo.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1280
- - C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\jo.exe
    "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\jo.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:996

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Credentials in Files

T1081

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

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Downloads

memory/996-44-0x0000000002620000-0x0000000002621000-memory.dmp

Download

memory/996-42-0x0000000005AA0000-0x0000000005AA1000-memory.dmp

Download

memory/996-41-0x0000000004F20000-0x0000000004F21000-memory.dmp

Download

memory/996-40-0x0000000004EC0000-0x0000000004EC1000-memory.dmp

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memory/996-35-0x00000000739A0000-0x000000007408E000-memory.dmp

Download

memory/996-31-0x0000000000400000-0x000000000043C000-memory.dmp

Download

memory/1280-18-0x00000000739A0000-0x000000007408E000-memory.dmp

Download

memory/1280-30-0x000000000CC50000-0x000000000CC51000-memory.dmp

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memory/1280-26-0x0000000005BF0000-0x0000000005BF1000-memory.dmp

Download

memory/1280-28-0x0000000005BF1000-0x0000000005BF2000-memory.dmp

Download

memory/1280-29-0x0000000007600000-0x000000000760B000-memory.dmp

Download

memory/4092-2-0x00000000739A0000-0x000000007408E000-memory.dmp

Download

memory/4092-14-0x00000000056C1000-0x00000000056C2000-memory.dmp

Download

memory/4092-11-0x0000000007770000-0x000000000779F000-memory.dmp

Download

memory/4092-10-0x00000000056C0000-0x00000000056C1000-memory.dmp

Download

memory/4092-8-0x0000000006110000-0x0000000006111000-memory.dmp

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memory/4092-7-0x00000000057B0000-0x00000000057B1000-memory.dmp

Download

memory/4092-6-0x0000000005710000-0x0000000005711000-memory.dmp

Download

memory/4092-5-0x0000000005C10000-0x0000000005C11000-memory.dmp

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memory/4092-3-0x0000000000D40000-0x0000000000D41000-memory.dmp

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