agenttesla | 2cf36ac3e8c07fcbeb2ec52dd992d2722aa68305db8d5a1dee9be0b6ccd186ef

General

Target

Payment advis pdf.scr.exe
Size

375KB
MD5

c841e0d1d9238121a768bceb6339f5c9
SHA1

62d9cfda2108525125a795467c62cda564c6ebb5
SHA256

2cf36ac3e8c07fcbeb2ec52dd992d2722aa68305db8d5a1dee9be0b6ccd186ef
SHA512

3834eb7529313c7653d46716790620c982f0a933fcabc4be1c37554b6bb198bd726f4dfaee0ee9b338c2f5d51a07294cd7c509b13f5ba78dc4cba3e5cdd782cc
SSDEEP

6144:ZVGdx6x2FUdnyePvRqloupOCaDU+tnvqtxKarFZJDJyUsN/hvRB7y:HtdyePvRTupTaDU+tvc3rpJslhj+

Score

10^/10

agenttesla collection keylogger spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: ftp
Host:
ftp://ftp.mcmprint.net
Port:
21
Username:
[email protected]
Password:
l9Hh{#_(0shZ

Signatures

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

Checks QEMU agent file 2 TTPs 2 IoCs

Checks presence of QEMU agent, possibly to detect virtualization.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
File opened (read-only)	C:\Program Files\Qemu-ga\qemu-ga.exe	Payment advis pdf.scr.exe
File opened (read-only)	C:\Program Files\Qemu-ga\qemu-ga.exe	caspol.exe

Loads dropped DLL 1 IoCs

pid	Process
4988	Payment advis pdf.scr.exe

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	caspol.exe
Key opened	\REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	caspol.exe
Key opened	\REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	caspol.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
81	api.ipify.org
82	api.ipify.org

Drops file in System32 directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\Spheroidal.Col	Payment advis pdf.scr.exe

Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs

pid	Process
4408	caspol.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
4988	Payment advis pdf.scr.exe
4408	caspol.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4988 set thread context of 4408	4988	Payment advis pdf.scr.exe	85

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
4408	caspol.exe
4408	caspol.exe
4408	caspol.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
4988	Payment advis pdf.scr.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4408	caspol.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 4988 wrote to memory of 4408	4988	Payment advis pdf.scr.exe	85
PID 4988 wrote to memory of 4408	4988	Payment advis pdf.scr.exe	85
PID 4988 wrote to memory of 4408	4988	Payment advis pdf.scr.exe	85
PID 4988 wrote to memory of 4408	4988	Payment advis pdf.scr.exe	85

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	caspol.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	caspol.exe

C:\Users\Admin\AppData\Local\Temp\Payment advis pdf.scr.exe
"C:\Users\Admin\AppData\Local\Temp\Payment advis pdf.scr.exe"
1⤵
- Checks QEMU agent file
- Loads dropped DLL
- Drops file in System32 directory
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:4988
- C:\Windows\Microsoft.NET\Framework\v2.0.50727\caspol.exe
  "C:\Users\Admin\AppData\Local\Temp\Payment advis pdf.scr.exe"
  2⤵
  - Checks QEMU agent file
  - Accesses Microsoft Outlook profiles
  - Suspicious use of NtCreateThreadExHideFromDebugger
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - outlook_office_path
  - outlook_win_path
  PID:4408

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Email Collection

1

T1114

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\nsu8870.tmp\System.dll

Filesize
11KB

MD5
75ed96254fbf894e42058062b4b4f0d1

SHA1
996503f1383b49021eb3427bc28d13b5bbd11977

SHA256
a632d74332b3f08f834c732a103dafeb09a540823a2217ca7f49159755e8f1d7

SHA512
58174896db81d481947b8745dafe3a02c150f3938bb4543256e8cce1145154e016d481df9fe68dac6d48407c62cbe20753320ebd5fe5e84806d07ce78e0eb0c4

Download Submit
memory/4408-144-0x0000000000401000-0x000000000062B000-memory.dmp

Filesize
2.2MB

Download
memory/4408-147-0x0000000072CE0000-0x0000000073291000-memory.dmp

Filesize
5.7MB

Download
memory/4408-150-0x0000000072CE0000-0x0000000073291000-memory.dmp

Filesize
5.7MB

Download
memory/4408-149-0x0000000077480000-0x0000000077623000-memory.dmp

Filesize
1.6MB

Download
memory/4408-148-0x00007FF8ED830000-0x00007FF8EDA25000-memory.dmp

Filesize
2.0MB

Download
memory/4408-139-0x0000000000C00000-0x0000000000D00000-memory.dmp

Filesize
1024KB

Download
memory/4408-140-0x0000000000C00000-0x0000000000D00000-memory.dmp

Filesize
1024KB

Download
memory/4408-143-0x0000000000400000-0x000000000062B000-memory.dmp

Filesize
2.2MB

Download
memory/4408-142-0x0000000077480000-0x0000000077623000-memory.dmp

Filesize
1.6MB

Download
memory/4408-141-0x00007FF8ED830000-0x00007FF8EDA25000-memory.dmp

Filesize
2.0MB

Download
memory/4408-146-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download
memory/4988-133-0x0000000002970000-0x0000000002A4B000-memory.dmp

Filesize
876KB

Download
memory/4988-134-0x0000000002970000-0x0000000002A4B000-memory.dmp

Filesize
876KB

Download
memory/4988-138-0x0000000077480000-0x0000000077623000-memory.dmp

Filesize
1.6MB

Download
memory/4988-136-0x0000000077480000-0x0000000077623000-memory.dmp

Filesize
1.6MB

Download
memory/4988-135-0x00007FF8ED830000-0x00007FF8EDA25000-memory.dmp

Filesize
2.0MB

Download

Analysis

Sharing