agenttesla | 937f43ce0b39fca4de06bbeaa5aac7f4ff41397d24aff49ca1441534c7ad05db

Resubmissions

15/05/2023, 11:15

230515-nc1rxaad5w 10

15/05/2023, 09:17

230515-k9jm4saa21 10

15/05/2023, 09:14

230515-k7vbtsfe86 3

Analysis

max time kernel
1596s
max time network
1567s
platform
windows10-2004_x64
resource
win10v2004-20230220-en
resource tags

arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
submitted
15/05/2023, 11:15

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General

Target

MY00046R0239528MYKUL.exe
Size

154KB
MD5

da9e335cd673f6fe0bba1fa82aa04e4c
SHA1

fdb8e13542a61d2e186e9b4b1cf1573868a80121
SHA256

b2280e958e4020f76a0096cff05b795311599a6e36bdc9f3131e66bcfd27fa5a
SHA512

e52fc95374f9b2ba1eeeac2ed82a406ada102db7fa7b388e2a18391c9a6c2fdb869dbf3f4eaa3fe3e84c0551721565da3174c85873a0be779a2acd36acdf4770
SSDEEP

3072:cYu/YbAcxltXuX4bBGCOVy04vEfS7ylxJdEOA1Uz04/GlqwTNqjnN+5:c6bAcJZxC4vvGDtA6Yfg4NqjnNQ

Score

10^/10

agenttesla guloader downloader keylogger spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
masonadventures.com
Port:
587
Username:
[email protected]
Password:
PUh/f9ES(7,av{ZL;F
Email To:
[email protected]

Signatures

AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
keylogger trojan stealer spyware agenttesla
Guloader,Cloudeye
A shellcode based downloader first seen in 2020.
downloader guloader

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	MY00046R0239528MYKUL.exe
File opened (read-only)	C:\Program Files\Qemu-ga\qemu-ga.exe	caspol.exe

Loads dropped DLL 1 IoCs

pid	Process
2244	MY00046R0239528MYKUL.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs

Web Service
T1102

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\SysWOW64\Candock\Paludiferous\Deashes\Hushandelers.ini	MY00046R0239528MYKUL.exe

Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs

pid	Process
4196	caspol.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
2244	MY00046R0239528MYKUL.exe
4196	caspol.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2244 set thread context of 4196	2244	MY00046R0239528MYKUL.exe	92

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

System Information Discovery
T1082

Program crash 1 IoCs

pid	pid_target	Process	procid_target
4596	4196	WerFault.exe	92

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4196	caspol.exe
4196	caspol.exe

Suspicious behavior: MapViewOfSection 2 IoCs

pid	Process
2244	MY00046R0239528MYKUL.exe
2244	MY00046R0239528MYKUL.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4196	caspol.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2244 wrote to memory of 2300	2244	MY00046R0239528MYKUL.exe	91
PID 2244 wrote to memory of 2300	2244	MY00046R0239528MYKUL.exe	91
PID 2244 wrote to memory of 2300	2244	MY00046R0239528MYKUL.exe	91
PID 2244 wrote to memory of 4196	2244	MY00046R0239528MYKUL.exe	92
PID 2244 wrote to memory of 4196	2244	MY00046R0239528MYKUL.exe	92
PID 2244 wrote to memory of 4196	2244	MY00046R0239528MYKUL.exe	92
PID 2244 wrote to memory of 4196	2244	MY00046R0239528MYKUL.exe	92

C:\Users\Admin\AppData\Local\Temp\MY00046R0239528MYKUL.exe
"C:\Users\Admin\AppData\Local\Temp\MY00046R0239528MYKUL.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:2244
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\caspol.exe
  "C:\Users\Admin\AppData\Local\Temp\MY00046R0239528MYKUL.exe"
  2⤵
  PID:2300
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\caspol.exe
  "C:\Users\Admin\AppData\Local\Temp\MY00046R0239528MYKUL.exe"
  2⤵
  - Checks QEMU agent file
  - Suspicious use of NtCreateThreadExHideFromDebugger
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4196
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 4196 -s 2576
    3⤵
    - Program crash
    PID:4596

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 436 -p 4196 -ip 4196
1⤵
PID:3236

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Web Service

T1102

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Web Service

T1102

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\nsl2F10.tmp\System.dll

Filesize
11KB

MD5
9625d5b1754bc4ff29281d415d27a0fd

SHA1
80e85afc5cccd4c0a3775edbb90595a1a59f5ce0

SHA256
c2f405d7402f815d0c3fadd9a50f0bbbb1bab9aa38fe347823478a2587299448

SHA512
dce52b640897c2e8dbfd0a1472d5377fa91fb9cf1aeff62604d014bccbe5b56af1378f173132abeb0edd18c225b9f8f5e3d3e72434aed946661e036c779f165b

Download Submit
memory/2244-141-0x0000000002EA0000-0x00000000044A3000-memory.dmp

Filesize
22.0MB

Download
memory/2244-142-0x0000000002EA0000-0x00000000044A3000-memory.dmp

Filesize
22.0MB

Download
memory/4196-143-0x0000000000F00000-0x0000000002503000-memory.dmp

Filesize
22.0MB

Download
memory/4196-144-0x0000000000F00000-0x0000000002503000-memory.dmp

Filesize
22.0MB

Download
memory/4196-157-0x0000000000400000-0x000000000062B000-memory.dmp

Filesize
2.2MB

Download
memory/4196-158-0x0000000000F00000-0x0000000002503000-memory.dmp

Filesize
22.0MB

Download
memory/4196-159-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/4196-160-0x0000000035890000-0x0000000035E34000-memory.dmp

Filesize
5.6MB

Download
memory/4196-161-0x00000000352E0000-0x0000000035346000-memory.dmp

Filesize
408KB

Download
memory/4196-162-0x0000000000E50000-0x0000000000E60000-memory.dmp

Filesize
64KB

Download
memory/4196-164-0x0000000000F00000-0x0000000002503000-memory.dmp

Filesize
22.0MB

Download