agenttesla | 70694fb90e4ef85f95fa46b7ab28a7d8fdb18decdb9aaf8e122a7ba0aec180d9

General

Target

Bank letter.exe
Size

1012KB
MD5

a58b322c74d8dfba9c022607b0d0c26b
SHA1

380f438ad2620f1582fe9b7d5b2ba84c3d6f3349
SHA256

322a82cb52dd04f516915780a9eb9865e24bd284fedecf938e345270fa0f83b3
SHA512

06d2ff7e199a1be0ca7357bb8e9bdbcc63f00d1082cab4ef086f344b6b88c00e2885db5e369329220463237558a43280b0d249349511ca9d6e01f8bac13f3118
SSDEEP

12288:SLw5APwiU251kh53ZLsVOdl0160HQV7g5D+8Egpe0kOrZsEnGvjbLhsRuDIQoiCa:IPOoSbdlYHQVGioZNtrB3m

Score

10^/10

agenttesla collection keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
mail.dmstech.in
Port:
587
Username:
[email protected]
Password:
0]6F9Az.pqfd
Email To:
[email protected]

Signatures

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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-4060001867-1434967833-2212371794-1000\Control Panel\International\Geo\Nation	Bank letter.exe

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-4060001867-1434967833-2212371794-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe
Key opened	\REGISTRY\USER\S-1-5-21-4060001867-1434967833-2212371794-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe
Key opened	\REGISTRY\USER\S-1-5-21-4060001867-1434967833-2212371794-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	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-1-5-21-4060001867-1434967833-2212371794-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\zBwkauB = "C:\\Users\\Admin\\AppData\\Roaming\\zBwkauB\\zBwkauB.exe"	RegSvcs.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4756 set thread context of 5044	4756	Bank letter.exe	94

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
1744	schtasks.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
4756	Bank letter.exe
5044	RegSvcs.exe
5044	RegSvcs.exe
5044	RegSvcs.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4756	Bank letter.exe
Token: SeDebugPrivilege	5044	RegSvcs.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 4756 wrote to memory of 1744	4756	Bank letter.exe	92
PID 4756 wrote to memory of 1744	4756	Bank letter.exe	92
PID 4756 wrote to memory of 1744	4756	Bank letter.exe	92
PID 4756 wrote to memory of 5044	4756	Bank letter.exe	94
PID 4756 wrote to memory of 5044	4756	Bank letter.exe	94
PID 4756 wrote to memory of 5044	4756	Bank letter.exe	94
PID 4756 wrote to memory of 5044	4756	Bank letter.exe	94
PID 4756 wrote to memory of 5044	4756	Bank letter.exe	94
PID 4756 wrote to memory of 5044	4756	Bank letter.exe	94
PID 4756 wrote to memory of 5044	4756	Bank letter.exe	94
PID 4756 wrote to memory of 5044	4756	Bank letter.exe	94

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-4060001867-1434967833-2212371794-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-4060001867-1434967833-2212371794-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe

C:\Users\Admin\AppData\Local\Temp\Bank letter.exe
"C:\Users\Admin\AppData\Local\Temp\Bank letter.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4756
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\ZDSHLar" /XML "C:\Users\Admin\AppData\Local\Temp\tmp56BB.tmp"
  2⤵
  - Creates scheduled task(s)
  PID:1744
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.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:5044

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

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Email Collection

1

T1114

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp56BB.tmp

Filesize
1KB

MD5
2e8ddbd4a6369e791c7bba06d0c5bb62

SHA1
4f8410544d375be9c62a8ca8e2d4762067db30c5

SHA256
34e36ae94a423a06b6352da7c649dbc8a7fad6b541b7a668426eb7af727234a3

SHA512
2c32dcdb847a02b64aceda3b637f176c39b0af9e43a42c3321ef8bab8cf271fac4d7bd7db372151976ed94726d12e133c43636684cef113702fa5f020b908a3d

Download Submit
memory/4756-132-0x0000000000840000-0x0000000000944000-memory.dmp

Filesize
1.0MB

Download
memory/4756-133-0x00000000058C0000-0x0000000005E64000-memory.dmp

Filesize
5.6MB

Download
memory/4756-134-0x0000000005310000-0x00000000053A2000-memory.dmp

Filesize
584KB

Download
memory/4756-135-0x00000000053B0000-0x000000000544C000-memory.dmp

Filesize
624KB

Download
memory/4756-136-0x00000000052D0000-0x00000000052DA000-memory.dmp

Filesize
40KB

Download
memory/5044-140-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download
memory/5044-141-0x0000000006590000-0x00000000065F6000-memory.dmp

Filesize
408KB

Download
memory/5044-142-0x00000000068E0000-0x0000000006930000-memory.dmp

Filesize
320KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads