agenttesla | c83fa0fe8fcce8c22dc31440b883ee13badb2438f6a35ddd56a7b8c7e03c335c

General

Target

HG987654567000.vbs
Size

33KB
MD5

59a24e918603e8e13baece1f49ccb169
SHA1

84e045dcf3e4c49445abe4e61af4795e8091d5de
SHA256

c83fa0fe8fcce8c22dc31440b883ee13badb2438f6a35ddd56a7b8c7e03c335c
SHA512

85561f9127d28e46ccb0a7329892cece142e817f77dbe77e1d2583ba4b29bf234c8334fe5596e30fe08d3edb1d615cbc9c8da8790f037c065664f0c29dd68c86
SSDEEP

384:ljD6h5upiUy+I4B8Gyh6r4x8yGNy0wVS2fwspQsFXkInOEZfDBEwA0QmKCp:45uhyt4Xyh6r4x8ygGnusS3EZrp4ep

Score

10^/10

agenttesla credential_access discovery keylogger spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: ftp
Host:
ftp://ftp.antoniomayol.com:21
Port:
21
Username:
[email protected]
Password:
cMhKDQUk1{;%

Signatures

AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
keylogger trojan stealer spyware agenttesla
Credentials from Password Stores: Credentials from Web Browsers 1 TTPs
Malicious Access or copy of Web Browser Credential store.
credential_access stealer

Credentials from Web Browsers
T1555.003
Downloads MZ/PE file

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-1-5-21-656926755-4116854191-210765258-1000\Control Panel\International\Geo\Nation	WScript.exe

Executes dropped EXE 1 IoCs

pid	Process
1036	x.exe

Looks up external IP address via web service 1 IoCs

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

flow	ioc
16	ip-api.com

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1036 set thread context of 3512	1036	x.exe	86

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	aspnet_compiler.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
3512	aspnet_compiler.exe
3512	aspnet_compiler.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1036	x.exe
Token: SeDebugPrivilege	3512	aspnet_compiler.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 4396 wrote to memory of 1036	4396	WScript.exe	83
PID 4396 wrote to memory of 1036	4396	WScript.exe	83
PID 1036 wrote to memory of 3512	1036	x.exe	86
PID 1036 wrote to memory of 3512	1036	x.exe	86
PID 1036 wrote to memory of 3512	1036	x.exe	86
PID 1036 wrote to memory of 3512	1036	x.exe	86
PID 1036 wrote to memory of 3512	1036	x.exe	86
PID 1036 wrote to memory of 3512	1036	x.exe	86
PID 1036 wrote to memory of 3512	1036	x.exe	86
PID 1036 wrote to memory of 3512	1036	x.exe	86

C:\Windows\System32\WScript.exe
"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\HG987654567000.vbs"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4396
- C:\Users\Admin\AppData\Local\Temp\x.exe
  "C:\Users\Admin\AppData\Local\Temp\x.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1036
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:3512

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials from Password Stores

1

T1555

Credentials from Web Browsers

1

T1555.003

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\x.exe

Filesize
16KB

MD5
0895a48b8b3050333df73cab2c249efb

SHA1
97701a825d6c4462774ac1a7f98984c9a6a94c86

SHA256
c8abfe8f42fa396f48b01eb6612c5620ae198a13ac8e2aa1f47a1e277d704c48

SHA512
5bd55439b142d5f3145b7a952d1f964e963d89e47930c7616e7eaea244e3fd8e792b056d62c48bdcf9f5ba188949e0a81058bfcd355d89b87c7b8973b2e13ddc

Download Submit
memory/1036-18-0x00007FF955A70000-0x00007FF956531000-memory.dmp

Filesize
10.8MB

Download
memory/1036-11-0x00007FF955A73000-0x00007FF955A75000-memory.dmp

Filesize
8KB

Download
memory/1036-12-0x000002837A0F0000-0x000002837A0FA000-memory.dmp

Filesize
40KB

Download
memory/1036-13-0x000002837BDE0000-0x000002837BDE8000-memory.dmp

Filesize
32KB

Download
memory/1036-14-0x00007FF955A70000-0x00007FF956531000-memory.dmp

Filesize
10.8MB

Download
memory/1036-15-0x000002837BE20000-0x000002837BE2A000-memory.dmp

Filesize
40KB

Download
memory/3512-16-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/3512-19-0x000000007488E000-0x000000007488F000-memory.dmp

Filesize
4KB

Download
memory/3512-20-0x0000000005500000-0x0000000005AA4000-memory.dmp

Filesize
5.6MB

Download
memory/3512-21-0x0000000005050000-0x00000000050B6000-memory.dmp

Filesize
408KB

Download
memory/3512-22-0x0000000006310000-0x0000000006360000-memory.dmp

Filesize
320KB

Download
memory/3512-23-0x0000000006400000-0x0000000006492000-memory.dmp

Filesize
584KB

Download
memory/3512-24-0x0000000006390000-0x000000000639A000-memory.dmp

Filesize
40KB

Download
memory/3512-25-0x000000007488E000-0x000000007488F000-memory.dmp

Filesize
4KB

Download

Analysis

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