agenttesla | dea077180d1a981a1a9bd8f901bc177236825f173e5e2394161811797933fdc2

General

Target

TR98760H.exe
Size

1.4MB
MD5

6a52dd7596c5dad865e414e58d84eb9d
SHA1

62437efb5194184f5db6647a81c7a14bcbb498e9
SHA256

dea077180d1a981a1a9bd8f901bc177236825f173e5e2394161811797933fdc2
SHA512

4ac03b5e7ed70150154b0b632549434952e71150aa14019ae3db8da027db7ab7985fad2435b504abc9a896385dc3942db15f46cbe87b73913862b3af4a6c640f
SSDEEP

24576:bqDEvCTbMWu7rQYlBQcBiT6rprG8alxXVnSRkCs8AUnknYJepRo25Hp:bTvC/MTQYxsWR7al/nrFGfeU2

Score

10^/10

agenttesla discovery keylogger spyware stealer trojan

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\Tererro.vbs	Tererro.exe

Executes dropped EXE 1 IoCs

pid	Process
2496	Tererro.exe

Loads dropped DLL 1 IoCs

pid	Process
2336	TR98760H.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 1 IoCs

AutoIT scripts compiled to PE executables.

resource	yara_rule
behavioral1/files/0x000800000001650a-4.dat	autoit_exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2496 set thread context of 1904	2496	Tererro.exe	32

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	TR98760H.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Tererro.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1904	RegSvcs.exe
1904	RegSvcs.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
2496	Tererro.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1904	RegSvcs.exe

Suspicious use of FindShellTrayWindow 4 IoCs

pid	Process
2336	TR98760H.exe
2336	TR98760H.exe
2496	Tererro.exe
2496	Tererro.exe

Suspicious use of SendNotifyMessage 4 IoCs

pid	Process
2336	TR98760H.exe
2336	TR98760H.exe
2496	Tererro.exe
2496	Tererro.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 2336 wrote to memory of 2496	2336	TR98760H.exe	31
PID 2336 wrote to memory of 2496	2336	TR98760H.exe	31
PID 2336 wrote to memory of 2496	2336	TR98760H.exe	31
PID 2336 wrote to memory of 2496	2336	TR98760H.exe	31
PID 2496 wrote to memory of 1904	2496	Tererro.exe	32
PID 2496 wrote to memory of 1904	2496	Tererro.exe	32
PID 2496 wrote to memory of 1904	2496	Tererro.exe	32
PID 2496 wrote to memory of 1904	2496	Tererro.exe	32
PID 2496 wrote to memory of 1904	2496	Tererro.exe	32
PID 2496 wrote to memory of 1904	2496	Tererro.exe	32
PID 2496 wrote to memory of 1904	2496	Tererro.exe	32
PID 2496 wrote to memory of 1904	2496	Tererro.exe	32

C:\Users\Admin\AppData\Local\Temp\TR98760H.exe
"C:\Users\Admin\AppData\Local\Temp\TR98760H.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:2336
- C:\Users\Admin\AppData\Local\Hymenophyllaceae\Tererro.exe
  "C:\Users\Admin\AppData\Local\Temp\TR98760H.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:2496
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
    "C:\Users\Admin\AppData\Local\Temp\TR98760H.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:1904

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\antiprimer

Filesize
239KB

MD5
4bb8a70bffab9de2359dd87d859450df

SHA1
45cf687f0472ae66144fd7093ab71058bb0a6704

SHA256
42eb9689feb5408b38c2395eb2b41fe2edb5964745ce70930084fabc35747ad3

SHA512
b095a5adb51bae830ff7a2edf8eaf554f8ddad8b5900c0601d491bf278b8d838e8e31c6af9db6b6d12814ca7fe9b381d0735ab0787b94958a696c47e898221a9

Download Submit
\Users\Admin\AppData\Local\Hymenophyllaceae\Tererro.exe

Filesize
1.4MB

MD5
6a52dd7596c5dad865e414e58d84eb9d

SHA1
62437efb5194184f5db6647a81c7a14bcbb498e9

SHA256
dea077180d1a981a1a9bd8f901bc177236825f173e5e2394161811797933fdc2

SHA512
4ac03b5e7ed70150154b0b632549434952e71150aa14019ae3db8da027db7ab7985fad2435b504abc9a896385dc3942db15f46cbe87b73913862b3af4a6c640f

Download Submit
memory/1904-14-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/1904-18-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/1904-17-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/1904-19-0x000000007414E000-0x000000007414F000-memory.dmp

Filesize
4KB

Download
memory/1904-20-0x0000000074140000-0x000000007482E000-memory.dmp

Filesize
6.9MB

Download
memory/1904-21-0x000000007414E000-0x000000007414F000-memory.dmp

Filesize
4KB

Download
memory/1904-22-0x0000000074140000-0x000000007482E000-memory.dmp

Filesize
6.9MB

Download
memory/2336-2-0x0000000000750000-0x0000000000B50000-memory.dmp

Filesize
4.0MB

Download
memory/2496-12-0x0000000000A10000-0x0000000000E10000-memory.dmp

Filesize
4.0MB

Download

Analysis

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