agenttesla | d5d3a7f4ca9b374465da72f550cc5a04e751c6a4ed18ab917a304318a9b4409b

General

Target

Documt736098.vbe
Size

9KB
MD5

8113e63e2ba4ac63a4621b2d9441524d
SHA1

05b433f2cfb14f9d1ec947e32a496c45a2cfa22a
SHA256

d5d3a7f4ca9b374465da72f550cc5a04e751c6a4ed18ab917a304318a9b4409b
SHA512

730e21b73e6320146c53dd9092246578a476b24efb6dbcd902e905df05039274cd2adf76293e54e1d9a3cb01e88d3800db867597bbffd979ecfea5729d4d62d9
SSDEEP

192:egjmLPbnOqiR2jutyT8vPka6hfuIMynp9KAvPxK:tjcPbg2+yT8HkaTTqp0AvQ

Score

10^/10

agenttesla discovery keylogger spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
162.254.34.31
Port:
587
Username:
[email protected]
Password:
M992uew1mw6Z
Email To:
[email protected]

Signatures

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

Blocklisted process makes network request 1 IoCs

flow	pid	Process
3	1556	WScript.exe

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-1-5-21-2045521122-590294423-3465680274-1000\Control Panel\International\Geo\Nation	WScript.exe

Looks up external IP address via web service 2 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
40	api.ipify.org
41	api.ipify.org

Drops file in System32 directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\System32\%AppData%\Microsoft\Windows\Start Menu\Programs\Windows PowerShell\Windows PowerShell.lnk	powershell.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4320 set thread context of 3988	4320	powershell.exe	104

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

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	MSBuild.exe

Checks processor information in registry 2 TTPs 3 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	wermgr.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	wermgr.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	wermgr.exe

Enumerates system info in registry 2 TTPs 2 IoCs

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	wermgr.exe
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	wermgr.exe

Script User-Agent 1 IoCs

Uses user-agent string associated with script host/environment.

description	flow	ioc
HTTP User-Agent header	3	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
4320	powershell.exe
4320	powershell.exe
4320	powershell.exe
3988	MSBuild.exe
3988	MSBuild.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4320	powershell.exe
Token: SeDebugPrivilege	3988	MSBuild.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 3068 wrote to memory of 4320	3068	WScript.exe	100
PID 3068 wrote to memory of 4320	3068	WScript.exe	100
PID 4320 wrote to memory of 3988	4320	powershell.exe	104
PID 4320 wrote to memory of 3988	4320	powershell.exe	104
PID 4320 wrote to memory of 3988	4320	powershell.exe	104
PID 4320 wrote to memory of 3988	4320	powershell.exe	104
PID 4320 wrote to memory of 3988	4320	powershell.exe	104
PID 4320 wrote to memory of 3988	4320	powershell.exe	104
PID 4320 wrote to memory of 3988	4320	powershell.exe	104
PID 4320 wrote to memory of 3988	4320	powershell.exe	104
PID 4320 wrote to memory of 4128	4320	powershell.exe	105
PID 4320 wrote to memory of 4128	4320	powershell.exe	105

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012

C:\Windows\System32\WScript.exe
"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\Documt736098.vbe"
1⤵
- Blocklisted process makes network request
PID:1556

C:\Windows\System32\WScript.exe
C:\Windows\System32\WScript.exe "C:\Users\Admin\AppData\Roaming\TJtBPNdaqSLLBQi.vbs"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3068
- C:\Windows\system32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\system32\WindowsPowerShell\v1.0\powershell.exe"
  2⤵
  - Drops file in System32 directory
  - Suspicious use of SetThreadContext
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:4320
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:3988
- - C:\Windows\system32\wermgr.exe
    "C:\Windows\system32\wermgr.exe" "-outproc" "0" "4320" "2716" "2660" "2720" "0" "0" "2724" "0" "0" "0" "0" "0"
    3⤵
    - Checks processor information in registry
    - Enumerates system info in registry
    PID:4128

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

4

T1012

System Information Discovery

4

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_swtek0f3.m2l.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Roaming\TJtBPNdaqSLLBQi.vbs

Filesize
2KB

MD5
78fdde7d507d9d64ddd3808c52231caa

SHA1
cd989a13a2f92c404ddd56f9b9126e529b091f74

SHA256
0c26896cb8ca3eaa7e009abac4eff302f5a8fd312f987a2d802bdf4d67c0fd0a

SHA512
d77b609a544ee038e2673201d756b2a8f486a288ca0df10d1161f1516982405a7ed075c84b16d4f3ff1bde7a8ee21797e51df6e576e7ea0b85ae9835f534321a

Download Submit
memory/3988-29-0x00000000052C0000-0x0000000005864000-memory.dmp

Filesize
5.6MB

Download
memory/3988-33-0x00000000063A0000-0x00000000063AA000-memory.dmp

Filesize
40KB

Download
memory/3988-32-0x0000000006420000-0x00000000064B2000-memory.dmp

Filesize
584KB

Download
memory/3988-31-0x0000000006330000-0x0000000006380000-memory.dmp

Filesize
320KB

Download
memory/3988-30-0x0000000004F00000-0x0000000004F66000-memory.dmp

Filesize
408KB

Download
memory/3988-19-0x0000000000770000-0x00000000007B0000-memory.dmp

Filesize
256KB

Download
memory/4320-14-0x0000027E76DF0000-0x0000027E76E34000-memory.dmp

Filesize
272KB

Download
memory/4320-18-0x0000027E76E40000-0x0000027E76E4A000-memory.dmp

Filesize
40KB

Download
memory/4320-17-0x0000027E76070000-0x0000027E76078000-memory.dmp

Filesize
32KB

Download
memory/4320-15-0x0000027E76EC0000-0x0000027E76F36000-memory.dmp

Filesize
472KB

Download
memory/4320-13-0x0000027E5DDA0000-0x0000027E5DDC2000-memory.dmp

Filesize
136KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads