agenttesla | c43ca75d4422c4c10b084571a15e6532ee6b82acb59f7c19ca0ec4b6bb6830a9

General

Target

HGI887Y6T009AK.exe
Size

955KB
MD5

203c7be32fe375c5a88117eba27b2c50
SHA1

23472df937e02358ebdf1894680532a2e83d137b
SHA256

5d5dc213adb7029219ec59393b864e2767e555bec4af95b380c947374d537833
SHA512

0666b3e29d2eff24a5a4ce80631e2ce99d52badd54efe55e818ea56ccad023046ac82ca9e4acf94ab1128b21772fc8eb143cb073a424614f3959990f65c08ad8
SSDEEP

24576:TD0tM85tbNJjldeYiYsRYSvoGOWyynee37hWaHaxkw04:TD0tM85DJjl/iFpnHLht4

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

Drops startup file 1 IoCs

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

Executes dropped EXE 1 IoCs

pid	Process
2816	Zalucki.exe

Loads dropped DLL 1 IoCs

pid	Process
2884	HGI887Y6T009AK.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 3 IoCs

AutoIT scripts compiled to PE executables.

resource	yara_rule
behavioral1/memory/2816-12-0x0000000000400000-0x000000000051C000-memory.dmp	autoit_exe
behavioral1/memory/2884-11-0x0000000000400000-0x000000000051C000-memory.dmp	autoit_exe
behavioral1/memory/2816-25-0x0000000000400000-0x000000000051C000-memory.dmp	autoit_exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2816 set thread context of 2612	2816	Zalucki.exe	31

UPX packed file 6 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2884-0-0x0000000000400000-0x000000000051C000-memory.dmp	upx
behavioral1/files/0x0007000000015f1b-5.dat	upx
behavioral1/memory/2884-7-0x00000000043D0000-0x00000000044EC000-memory.dmp	upx
behavioral1/memory/2816-12-0x0000000000400000-0x000000000051C000-memory.dmp	upx
behavioral1/memory/2884-11-0x0000000000400000-0x000000000051C000-memory.dmp	upx
behavioral1/memory/2816-25-0x0000000000400000-0x000000000051C000-memory.dmp	upx

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

System Information Discovery
T1082

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	HGI887Y6T009AK.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Zalucki.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RegSvcs.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2612	RegSvcs.exe
2612	RegSvcs.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
2816	Zalucki.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2612	RegSvcs.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 2884 wrote to memory of 2816	2884	HGI887Y6T009AK.exe	30
PID 2884 wrote to memory of 2816	2884	HGI887Y6T009AK.exe	30
PID 2884 wrote to memory of 2816	2884	HGI887Y6T009AK.exe	30
PID 2884 wrote to memory of 2816	2884	HGI887Y6T009AK.exe	30
PID 2816 wrote to memory of 2612	2816	Zalucki.exe	31
PID 2816 wrote to memory of 2612	2816	Zalucki.exe	31
PID 2816 wrote to memory of 2612	2816	Zalucki.exe	31
PID 2816 wrote to memory of 2612	2816	Zalucki.exe	31
PID 2816 wrote to memory of 2612	2816	Zalucki.exe	31
PID 2816 wrote to memory of 2612	2816	Zalucki.exe	31
PID 2816 wrote to memory of 2612	2816	Zalucki.exe	31
PID 2816 wrote to memory of 2612	2816	Zalucki.exe	31

C:\Users\Admin\AppData\Local\Temp\HGI887Y6T009AK.exe
"C:\Users\Admin\AppData\Local\Temp\HGI887Y6T009AK.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2884
- C:\Users\Admin\AppData\Local\hypopygidium\Zalucki.exe
  "C:\Users\Admin\AppData\Local\Temp\HGI887Y6T009AK.exe"
  2⤵
  - Drops startup file
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of WriteProcessMemory
  PID:2816
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
    "C:\Users\Admin\AppData\Local\Temp\HGI887Y6T009AK.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2612

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

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\hypopygidium\Zalucki.exe

Filesize
955KB

MD5
203c7be32fe375c5a88117eba27b2c50

SHA1
23472df937e02358ebdf1894680532a2e83d137b

SHA256
5d5dc213adb7029219ec59393b864e2767e555bec4af95b380c947374d537833

SHA512
0666b3e29d2eff24a5a4ce80631e2ce99d52badd54efe55e818ea56ccad023046ac82ca9e4acf94ab1128b21772fc8eb143cb073a424614f3959990f65c08ad8

Download Submit
memory/2612-26-0x000000007430E000-0x000000007430F000-memory.dmp

Filesize
4KB

Download
memory/2612-27-0x0000000074300000-0x00000000749EE000-memory.dmp

Filesize
6.9MB

Download
memory/2612-29-0x0000000074300000-0x00000000749EE000-memory.dmp

Filesize
6.9MB

Download
memory/2612-28-0x000000007430E000-0x000000007430F000-memory.dmp

Filesize
4KB

Download
memory/2612-19-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/2612-23-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/2612-21-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/2816-12-0x0000000000400000-0x000000000051C000-memory.dmp

Filesize
1.1MB

Download
memory/2816-17-0x0000000003720000-0x0000000003920000-memory.dmp

Filesize
2.0MB

Download
memory/2816-25-0x0000000000400000-0x000000000051C000-memory.dmp

Filesize
1.1MB

Download
memory/2884-3-0x0000000003BA0000-0x0000000003DA0000-memory.dmp

Filesize
2.0MB

Download
memory/2884-0-0x0000000000400000-0x000000000051C000-memory.dmp

Filesize
1.1MB

Download
memory/2884-7-0x00000000043D0000-0x00000000044EC000-memory.dmp

Filesize
1.1MB

Download
memory/2884-11-0x0000000000400000-0x000000000051C000-memory.dmp

Filesize
1.1MB

Download

Analysis

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