agenttesla | 48f845c33f790a9cf74760a5a8aa6ce48cfcab9eb0053f6b983333e6f2c6e828

General

Target

INVOICE09876545J.exe
Size

633KB
MD5

38febc8fe240353eab810eeedc379961
SHA1

4145de7c3f531f10c786d09302923f0572244d53
SHA256

eb59c6e8a42daf2f27f8112f109e563128e0d2b3a4cd9a074832e68e75cb9870
SHA512

a276a728bf50085a0aa2902ef4dbc97a88d6b4428a2ee1a75474382b451ebe8bec3bc126845d470540df06f72004c9ec3a6481f3ecfaa6446719910f3b9490b5
SSDEEP

12288:tz7hU5I5yuNHIgzSFKxWltRohBfSTso93UCv1hNhcFVxO4ePQnAf2Oy15:tf+iN57Gtene3lMFYPQnAf2OyH

Score

10^/10

agenttesla credential_access discovery keylogger spyware stealer trojan upx

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

Drops startup file 1 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\complacence.vbs	complacence.exe

Executes dropped EXE 1 IoCs

pid	Process
2196	complacence.exe

Loads dropped DLL 1 IoCs

pid	Process
2592	INVOICE09876545J.exe

UPX packed file 6 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral1/memory/2592-0-0x0000000000900000-0x0000000000A69000-memory.dmp	upx
behavioral1/files/0x0007000000018b4d-9.dat	upx
behavioral1/memory/2196-16-0x0000000001100000-0x0000000001269000-memory.dmp	upx
behavioral1/memory/2592-15-0x0000000000900000-0x0000000000A69000-memory.dmp	upx
behavioral1/memory/2592-13-0x0000000002BD0000-0x0000000002D39000-memory.dmp	upx
behavioral1/memory/2196-32-0x0000000001100000-0x0000000001269000-memory.dmp	upx

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
4	ip-api.com

AutoIT Executable 2 IoCs

AutoIT scripts compiled to PE executables.

resource	yara_rule
behavioral1/memory/2592-15-0x0000000000900000-0x0000000000A69000-memory.dmp	autoit_exe
behavioral1/memory/2196-32-0x0000000001100000-0x0000000001269000-memory.dmp	autoit_exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2196 set thread context of 2884	2196	complacence.exe	30

System Location Discovery: System Language Discovery 1 TTPs 3 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	INVOICE09876545J.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	complacence.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RegSvcs.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2884	RegSvcs.exe
2884	RegSvcs.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
2196	complacence.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2884	RegSvcs.exe

Suspicious use of FindShellTrayWindow 4 IoCs

pid	Process
2592	INVOICE09876545J.exe
2592	INVOICE09876545J.exe
2196	complacence.exe
2196	complacence.exe

Suspicious use of SendNotifyMessage 4 IoCs

pid	Process
2592	INVOICE09876545J.exe
2592	INVOICE09876545J.exe
2196	complacence.exe
2196	complacence.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 2592 wrote to memory of 2196	2592	INVOICE09876545J.exe	29
PID 2592 wrote to memory of 2196	2592	INVOICE09876545J.exe	29
PID 2592 wrote to memory of 2196	2592	INVOICE09876545J.exe	29
PID 2592 wrote to memory of 2196	2592	INVOICE09876545J.exe	29
PID 2196 wrote to memory of 2884	2196	complacence.exe	30
PID 2196 wrote to memory of 2884	2196	complacence.exe	30
PID 2196 wrote to memory of 2884	2196	complacence.exe	30
PID 2196 wrote to memory of 2884	2196	complacence.exe	30
PID 2196 wrote to memory of 2884	2196	complacence.exe	30
PID 2196 wrote to memory of 2884	2196	complacence.exe	30
PID 2196 wrote to memory of 2884	2196	complacence.exe	30
PID 2196 wrote to memory of 2884	2196	complacence.exe	30

C:\Users\Admin\AppData\Local\Temp\INVOICE09876545J.exe
"C:\Users\Admin\AppData\Local\Temp\INVOICE09876545J.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:2592
- C:\Users\Admin\AppData\Local\antiprimer\complacence.exe
  "C:\Users\Admin\AppData\Local\Temp\INVOICE09876545J.exe"
  2⤵
  - Drops startup file
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SendNotifyMessage
  - Suspicious use of WriteProcessMemory
  PID:2196
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
    "C:\Users\Admin\AppData\Local\Temp\INVOICE09876545J.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2884

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

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

\Users\Admin\AppData\Local\antiprimer\complacence.exe

Filesize
633KB

MD5
38febc8fe240353eab810eeedc379961

SHA1
4145de7c3f531f10c786d09302923f0572244d53

SHA256
eb59c6e8a42daf2f27f8112f109e563128e0d2b3a4cd9a074832e68e75cb9870

SHA512
a276a728bf50085a0aa2902ef4dbc97a88d6b4428a2ee1a75474382b451ebe8bec3bc126845d470540df06f72004c9ec3a6481f3ecfaa6446719910f3b9490b5

Download Submit
memory/2196-32-0x0000000001100000-0x0000000001269000-memory.dmp

Filesize
1.4MB

Download
memory/2196-16-0x0000000001100000-0x0000000001269000-memory.dmp

Filesize
1.4MB

Download
memory/2196-25-0x00000000007D0000-0x0000000000BD0000-memory.dmp

Filesize
4.0MB

Download
memory/2592-7-0x0000000000BD0000-0x0000000000FD0000-memory.dmp

Filesize
4.0MB

Download
memory/2592-15-0x0000000000900000-0x0000000000A69000-memory.dmp

Filesize
1.4MB

Download
memory/2592-13-0x0000000002BD0000-0x0000000002D39000-memory.dmp

Filesize
1.4MB

Download
memory/2592-0-0x0000000000900000-0x0000000000A69000-memory.dmp

Filesize
1.4MB

Download
memory/2884-27-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/2884-29-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/2884-31-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/2884-33-0x000000007440E000-0x000000007440F000-memory.dmp

Filesize
4KB

Download
memory/2884-34-0x0000000074400000-0x0000000074AEE000-memory.dmp

Filesize
6.9MB

Download
memory/2884-35-0x000000007440E000-0x000000007440F000-memory.dmp

Filesize
4KB

Download
memory/2884-36-0x0000000074400000-0x0000000074AEE000-memory.dmp

Filesize
6.9MB

Download

Analysis

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