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
2896	troopwise.exe

Loads dropped DLL 1 IoCs

pid	Process
2728	FAT876700900.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
4	ip-api.com

AutoIT Executable 2 IoCs

AutoIT scripts compiled to PE executables.

resource	yara_rule
behavioral1/memory/2728-16-0x0000000000920000-0x0000000000A79000-memory.dmp	autoit_exe
behavioral1/memory/2896-33-0x00000000009F0000-0x0000000000B49000-memory.dmp	autoit_exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2896 set thread context of 2916	2896	troopwise.exe	31

UPX packed file 6 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2728-0-0x0000000000920000-0x0000000000A79000-memory.dmp	upx
behavioral1/files/0x0002000000018334-9.dat	upx
behavioral1/memory/2728-16-0x0000000000920000-0x0000000000A79000-memory.dmp	upx
behavioral1/memory/2896-15-0x00000000009F0000-0x0000000000B49000-memory.dmp	upx
behavioral1/memory/2728-14-0x0000000002970000-0x0000000002AC9000-memory.dmp	upx
behavioral1/memory/2896-33-0x00000000009F0000-0x0000000000B49000-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	FAT876700900.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	troopwise.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RegSvcs.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2916	RegSvcs.exe
2916	RegSvcs.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
2896	troopwise.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2916	RegSvcs.exe

Suspicious use of FindShellTrayWindow 4 IoCs

pid	Process
2728	FAT876700900.exe
2728	FAT876700900.exe
2896	troopwise.exe
2896	troopwise.exe

Suspicious use of SendNotifyMessage 4 IoCs

pid	Process
2728	FAT876700900.exe
2728	FAT876700900.exe
2896	troopwise.exe
2896	troopwise.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 2728 wrote to memory of 2896	2728	FAT876700900.exe	30
PID 2728 wrote to memory of 2896	2728	FAT876700900.exe	30
PID 2728 wrote to memory of 2896	2728	FAT876700900.exe	30
PID 2728 wrote to memory of 2896	2728	FAT876700900.exe	30
PID 2896 wrote to memory of 2916	2896	troopwise.exe	31
PID 2896 wrote to memory of 2916	2896	troopwise.exe	31
PID 2896 wrote to memory of 2916	2896	troopwise.exe	31
PID 2896 wrote to memory of 2916	2896	troopwise.exe	31
PID 2896 wrote to memory of 2916	2896	troopwise.exe	31
PID 2896 wrote to memory of 2916	2896	troopwise.exe	31
PID 2896 wrote to memory of 2916	2896	troopwise.exe	31
PID 2896 wrote to memory of 2916	2896	troopwise.exe	31

C:\Users\Admin\AppData\Local\Temp\FAT876700900.exe
"C:\Users\Admin\AppData\Local\Temp\FAT876700900.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:2728
- 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:2896
- - 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:2916

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

\Users\Admin\AppData\Local\seskin\troopwise.exe

Filesize
601KB

MD5
79129cf9382f91ab74a895cd2c5a0c7f

SHA1
e1590b1a5ab3212dd35732affffb68236a2ca8b2

SHA256
1e6a8f176a0d7a9bd0321b4c032153f48b244be1584137453bf1afc07ea10157

SHA512
27a07feaa25f9aef7e62292a92197ffcc33a98200b21c26227afe6d0ffb658257846257321828afd332dfe360713c45462c2c65f940331cb9a33c581111e2807

Download Submit
memory/2728-7-0x0000000000BB0000-0x0000000000FB0000-memory.dmp

Filesize
4.0MB

Download
memory/2728-16-0x0000000000920000-0x0000000000A79000-memory.dmp

Filesize
1.3MB

Download
memory/2728-14-0x0000000002970000-0x0000000002AC9000-memory.dmp

Filesize
1.3MB

Download
memory/2728-0-0x0000000000920000-0x0000000000A79000-memory.dmp

Filesize
1.3MB

Download
memory/2896-33-0x00000000009F0000-0x0000000000B49000-memory.dmp

Filesize
1.3MB

Download
memory/2896-15-0x00000000009F0000-0x0000000000B49000-memory.dmp

Filesize
1.3MB

Download
memory/2896-25-0x0000000000C10000-0x0000000001010000-memory.dmp

Filesize
4.0MB

Download
memory/2916-27-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/2916-29-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/2916-31-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/2916-34-0x000000007456E000-0x000000007456F000-memory.dmp

Filesize
4KB

Download
memory/2916-35-0x0000000074560000-0x0000000074C4E000-memory.dmp

Filesize
6.9MB

Download
memory/2916-36-0x000000007456E000-0x000000007456F000-memory.dmp

Filesize
4KB

Download
memory/2916-37-0x0000000074560000-0x0000000074C4E000-memory.dmp

Filesize
6.9MB

Download

Analysis

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