agenttesla | 60c7b7bdd010037b5459ec48a9ad5a2dd27f95ca8012cf1e1174975ed2fd2c61

General

Target

FAT876700900.exe
Size

601KB
MD5

79129cf9382f91ab74a895cd2c5a0c7f
SHA1

e1590b1a5ab3212dd35732affffb68236a2ca8b2
SHA256

1e6a8f176a0d7a9bd0321b4c032153f48b244be1584137453bf1afc07ea10157
SHA512

27a07feaa25f9aef7e62292a92197ffcc33a98200b21c26227afe6d0ffb658257846257321828afd332dfe360713c45462c2c65f940331cb9a33c581111e2807
SSDEEP

12288:0YV6MorX7qzuC3QHO9FQVHPF51jgckYY8bj8LfBmQdGFjZUBdYay3X8F:zBXu9HGaVHjY8n8LeWdzy3c

Score

10^/10

agenttesla 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
Agenttesla family
agenttesla

Drops startup file 1 IoCs

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

Executes dropped EXE 1 IoCs

pid	Process
3752	troopwise.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
12	ip-api.com

AutoIT Executable 3 IoCs

AutoIT scripts compiled to PE executables.

resource	yara_rule
behavioral2/memory/1200-12-0x0000000000980000-0x0000000000AD9000-memory.dmp	autoit_exe
behavioral2/memory/3752-21-0x0000000001090000-0x0000000001490000-memory.dmp	autoit_exe
behavioral2/memory/3752-24-0x0000000000C50000-0x0000000000DA9000-memory.dmp	autoit_exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3752 set thread context of 4332	3752	troopwise.exe	84

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral2/memory/1200-0-0x0000000000980000-0x0000000000AD9000-memory.dmp	upx
behavioral2/files/0x000a000000023b68-10.dat	upx
behavioral2/memory/3752-11-0x0000000000C50000-0x0000000000DA9000-memory.dmp	upx
behavioral2/memory/1200-12-0x0000000000980000-0x0000000000AD9000-memory.dmp	upx
behavioral2/memory/3752-24-0x0000000000C50000-0x0000000000DA9000-memory.dmp	upx

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	RegSvcs.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	FAT876700900.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	troopwise.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4332	RegSvcs.exe
4332	RegSvcs.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
3752	troopwise.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4332	RegSvcs.exe

Suspicious use of FindShellTrayWindow 4 IoCs

pid	Process
1200	FAT876700900.exe
1200	FAT876700900.exe
3752	troopwise.exe
3752	troopwise.exe

Suspicious use of SendNotifyMessage 4 IoCs

pid	Process
1200	FAT876700900.exe
1200	FAT876700900.exe
3752	troopwise.exe
3752	troopwise.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 1200 wrote to memory of 3752	1200	FAT876700900.exe	83
PID 1200 wrote to memory of 3752	1200	FAT876700900.exe	83
PID 1200 wrote to memory of 3752	1200	FAT876700900.exe	83
PID 3752 wrote to memory of 4332	3752	troopwise.exe	84
PID 3752 wrote to memory of 4332	3752	troopwise.exe	84
PID 3752 wrote to memory of 4332	3752	troopwise.exe	84
PID 3752 wrote to memory of 4332	3752	troopwise.exe	84

C:\Users\Admin\AppData\Local\Temp\FAT876700900.exe
"C:\Users\Admin\AppData\Local\Temp\FAT876700900.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:1200
- C:\Users\Admin\AppData\Local\seskin\troopwise.exe
  "C:\Users\Admin\AppData\Local\Temp\FAT876700900.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:3752
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
    "C:\Users\Admin\AppData\Local\Temp\FAT876700900.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:4332

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

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

C:\Users\Admin\AppData\Local\Temp\Wauseon

Filesize
239KB

MD5
f185c708cce65de39acc6efff18747a7

SHA1
8e95f656a4e19d3d2555344f033c4e0887eb3c6d

SHA256
e2c29e2230fc596ee4cf3695962bb8568cf3719d63f8231a1220e946cfb3e86f

SHA512
fb112ed3e8e1ef76bb6377e305807339440d1dcbbb7767d4eec238dca892f77f9140d318d68d985eace4f32276417cbddf10fb7e2710dbe2ef79775382a2fb8d

Download Submit
C:\Users\Admin\AppData\Local\seskin\troopwise.exe

Filesize
601KB

MD5
79129cf9382f91ab74a895cd2c5a0c7f

SHA1
e1590b1a5ab3212dd35732affffb68236a2ca8b2

SHA256
1e6a8f176a0d7a9bd0321b4c032153f48b244be1584137453bf1afc07ea10157

SHA512
27a07feaa25f9aef7e62292a92197ffcc33a98200b21c26227afe6d0ffb658257846257321828afd332dfe360713c45462c2c65f940331cb9a33c581111e2807

Download Submit
memory/1200-7-0x0000000001420000-0x0000000001820000-memory.dmp

Filesize
4.0MB

Download
memory/1200-0-0x0000000000980000-0x0000000000AD9000-memory.dmp

Filesize
1.3MB

Download
memory/1200-12-0x0000000000980000-0x0000000000AD9000-memory.dmp

Filesize
1.3MB

Download
memory/3752-24-0x0000000000C50000-0x0000000000DA9000-memory.dmp

Filesize
1.3MB

Download
memory/3752-21-0x0000000001090000-0x0000000001490000-memory.dmp

Filesize
4.0MB

Download
memory/3752-11-0x0000000000C50000-0x0000000000DA9000-memory.dmp

Filesize
1.3MB

Download
memory/4332-23-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/4332-25-0x000000007408E000-0x000000007408F000-memory.dmp

Filesize
4KB

Download
memory/4332-26-0x00000000057A0000-0x0000000005D44000-memory.dmp

Filesize
5.6MB

Download
memory/4332-27-0x00000000051F0000-0x0000000005256000-memory.dmp

Filesize
408KB

Download
memory/4332-28-0x0000000074080000-0x0000000074830000-memory.dmp

Filesize
7.7MB

Download
memory/4332-29-0x0000000006350000-0x00000000063A0000-memory.dmp

Filesize
320KB

Download
memory/4332-30-0x0000000006440000-0x00000000064D2000-memory.dmp

Filesize
584KB

Download
memory/4332-31-0x00000000063E0000-0x00000000063EA000-memory.dmp

Filesize
40KB

Download
memory/4332-32-0x000000007408E000-0x000000007408F000-memory.dmp

Filesize
4KB

Download
memory/4332-33-0x0000000074080000-0x0000000074830000-memory.dmp

Filesize
7.7MB

Download

Analysis

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