agenttesla | 5b3b169b48056c1cd8b84093c312de2f9ec1c7a1edcd7591743f6eac62c98ab9

General

Target

5b3b169b48056c1cd8b84093c312de2f9ec1c7a1edcd7591743f6eac62c98ab9.vbe
Size

10KB
MD5

9ff77002fbcbdd6e749722541b423034
SHA1

ea5ff219e2dde3cc57a1668ff0526be5b84e1250
SHA256

5b3b169b48056c1cd8b84093c312de2f9ec1c7a1edcd7591743f6eac62c98ab9
SHA512

609f25739f34355e0e37fd244cd743f3442be6cb2518ff9fa0ec58ec5ec103e730d5f005ca86c040a7b3a078d49dd6b2363659085eaecc2de2fd24159da13388
SSDEEP

192:meHNd/sigyXaoMutGV+GCCYSyC+QvdyNhnKxtKlK:5HMiTDV+xnYSH+QVyNhnctKM

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
2	2112	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-1-5-21-2878641211-696417878-3864914810-1000\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 2972 set thread context of 4620	2972	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 opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	wermgr.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	wermgr.exe

Script User-Agent 1 IoCs

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

description	flow	ioc
HTTP User-Agent header	2	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
2972	powershell.exe
2972	powershell.exe
2972	powershell.exe
4620	MSBuild.exe
4620	MSBuild.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2972	powershell.exe
Token: SeDebugPrivilege	4620	MSBuild.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 1008 wrote to memory of 2972	1008	WScript.exe	101
PID 1008 wrote to memory of 2972	1008	WScript.exe	101
PID 2972 wrote to memory of 4620	2972	powershell.exe	104
PID 2972 wrote to memory of 4620	2972	powershell.exe	104
PID 2972 wrote to memory of 4620	2972	powershell.exe	104
PID 2972 wrote to memory of 4620	2972	powershell.exe	104
PID 2972 wrote to memory of 4620	2972	powershell.exe	104
PID 2972 wrote to memory of 4620	2972	powershell.exe	104
PID 2972 wrote to memory of 4620	2972	powershell.exe	104
PID 2972 wrote to memory of 4620	2972	powershell.exe	104
PID 2972 wrote to memory of 2752	2972	powershell.exe	106
PID 2972 wrote to memory of 2752	2972	powershell.exe	106

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\5b3b169b48056c1cd8b84093c312de2f9ec1c7a1edcd7591743f6eac62c98ab9.vbe"
1⤵
- Blocklisted process makes network request
PID:2112

C:\Windows\System32\WScript.exe
C:\Windows\System32\WScript.exe "C:\Users\Admin\AppData\Roaming\bEvujIIdkyIbOgF.vbs"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1008
- 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:2972
- - 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:4620
- - C:\Windows\system32\wermgr.exe
    "C:\Windows\system32\wermgr.exe" "-outproc" "0" "2972" "2732" "2672" "2736" "0" "0" "2740" "0" "0" "0" "0" "0"
    3⤵
    - Checks processor information in registry
    - Enumerates system info in registry
    PID:2752

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_s1e3rf1z.jn4.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

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

Filesize
2KB

MD5
ddf1e2f5de2ce71ccf56af38dedb27d0

SHA1
0033a0eb6babb97203cb8bb7f68287cfac9d96dc

SHA256
0a988536fc481bd16af5469d5faa1bbb9dc321601dfa858479c01844a3cdd1c8

SHA512
f4e451051d3bf74faf142973ef1f2a8c008d654f6d7178dbc426dceee2f16fb88c90980e3e12e77b3499d9f7a0bc4f36faafad35fb52bb9c8f8ba03ae2585941

Download Submit
memory/2972-18-0x0000014ACD0B0000-0x0000014ACD0BC000-memory.dmp

Filesize
48KB

Download
memory/2972-14-0x0000014ACD630000-0x0000014ACD674000-memory.dmp

Filesize
272KB

Download
memory/2972-15-0x0000014ACD700000-0x0000014ACD776000-memory.dmp

Filesize
472KB

Download
memory/2972-17-0x0000014ACCF20000-0x0000014ACCF28000-memory.dmp

Filesize
32KB

Download
memory/2972-4-0x0000014ACCEF0000-0x0000014ACCF12000-memory.dmp

Filesize
136KB

Download
memory/2972-29-0x0000014ACD0D0000-0x0000014ACD2EC000-memory.dmp

Filesize
2.1MB

Download
memory/4620-19-0x0000000001370000-0x00000000013B0000-memory.dmp

Filesize
256KB

Download
memory/4620-30-0x0000000006080000-0x0000000006624000-memory.dmp

Filesize
5.6MB

Download
memory/4620-31-0x0000000005AD0000-0x0000000005B36000-memory.dmp

Filesize
408KB

Download
memory/4620-32-0x0000000006F30000-0x0000000006F80000-memory.dmp

Filesize
320KB

Download
memory/4620-33-0x0000000007020000-0x00000000070B2000-memory.dmp

Filesize
584KB

Download
memory/4620-34-0x0000000006FA0000-0x0000000006FAA000-memory.dmp

Filesize
40KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads