agenttesla | 604d52dc3b6056ad0090d858a4ecae497fe1c0bfea2fd67576cfba4f389333f6

General

Target

SAL987656700.exe
Size

871KB
MD5

a885a9c7468691538b78d54852b5a59c
SHA1

1b2340a366a6b28ac9d30f31bacef95afd0de595
SHA256

d2d196a12c822020c4042d607be77746951b6cb3c16201ff21ca8e9c5c786209
SHA512

903c918ef94c4dd9c8277c7cffe2774a26af285e1e41dcf71c5c3aee1fc65d1202a2eb227267bb044c050299acbfb67b970ca75e17f5da1fc48e89472f45173c
SSDEEP

12288:9sHzOUNUSB/o5LsI1uwajJ5yvv1l2lclTUX1MDc35Qx3tkscoP80In35zFYoRn33:UiUmSB/o5d1ubcv620n356C0IpZnJGO

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\cunila.vbs	cunila.exe

Executes dropped EXE 1 IoCs

pid	Process
4108	cunila.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
15	ip-api.com

AutoIT Executable 3 IoCs

AutoIT scripts compiled to PE executables.

resource	yara_rule
behavioral2/memory/4016-10-0x0000000000A70000-0x0000000000C4F000-memory.dmp	autoit_exe
behavioral2/memory/4108-14-0x0000000001250000-0x0000000001650000-memory.dmp	autoit_exe
behavioral2/memory/4108-22-0x0000000000A20000-0x0000000000BFF000-memory.dmp	autoit_exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4108 set thread context of 3324	4108	cunila.exe	84

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4016-0-0x0000000000A70000-0x0000000000C4F000-memory.dmp	upx
behavioral2/files/0x0007000000023c83-6.dat	upx
behavioral2/memory/4108-7-0x0000000000A20000-0x0000000000BFF000-memory.dmp	upx
behavioral2/memory/4016-10-0x0000000000A70000-0x0000000000C4F000-memory.dmp	upx
behavioral2/memory/4108-22-0x0000000000A20000-0x0000000000BFF000-memory.dmp	upx

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2776	4108	WerFault.exe	83

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	SAL987656700.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cunila.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
3324	RegSvcs.exe
3324	RegSvcs.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
4108	cunila.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3324	RegSvcs.exe

Suspicious use of FindShellTrayWindow 4 IoCs

pid	Process
4016	SAL987656700.exe
4016	SAL987656700.exe
4108	cunila.exe
4108	cunila.exe

Suspicious use of SendNotifyMessage 4 IoCs

pid	Process
4016	SAL987656700.exe
4016	SAL987656700.exe
4108	cunila.exe
4108	cunila.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 4016 wrote to memory of 4108	4016	SAL987656700.exe	83
PID 4016 wrote to memory of 4108	4016	SAL987656700.exe	83
PID 4016 wrote to memory of 4108	4016	SAL987656700.exe	83
PID 4108 wrote to memory of 3324	4108	cunila.exe	84
PID 4108 wrote to memory of 3324	4108	cunila.exe	84
PID 4108 wrote to memory of 3324	4108	cunila.exe	84
PID 4108 wrote to memory of 3324	4108	cunila.exe	84

C:\Users\Admin\AppData\Local\Temp\SAL987656700.exe
"C:\Users\Admin\AppData\Local\Temp\SAL987656700.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:4016
- C:\Users\Admin\AppData\Local\enterogenous\cunila.exe
  "C:\Users\Admin\AppData\Local\Temp\SAL987656700.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:4108
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
    "C:\Users\Admin\AppData\Local\Temp\SAL987656700.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:3324
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 4108 -s 668
    3⤵
    - Program crash
    PID:2776

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4108 -ip 4108
1⤵
PID:4936

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\enterogenous\cunila.exe

Filesize
871KB

MD5
a885a9c7468691538b78d54852b5a59c

SHA1
1b2340a366a6b28ac9d30f31bacef95afd0de595

SHA256
d2d196a12c822020c4042d607be77746951b6cb3c16201ff21ca8e9c5c786209

SHA512
903c918ef94c4dd9c8277c7cffe2774a26af285e1e41dcf71c5c3aee1fc65d1202a2eb227267bb044c050299acbfb67b970ca75e17f5da1fc48e89472f45173c

Download Submit
memory/3324-23-0x00000000065D0000-0x0000000006620000-memory.dmp

Filesize
320KB

Download
memory/3324-27-0x00000000741F0000-0x00000000749A0000-memory.dmp

Filesize
7.7MB

Download
memory/3324-26-0x00000000741FE000-0x00000000741FF000-memory.dmp

Filesize
4KB

Download
memory/3324-25-0x0000000006650000-0x000000000665A000-memory.dmp

Filesize
40KB

Download
memory/3324-24-0x00000000066C0000-0x0000000006752000-memory.dmp

Filesize
584KB

Download
memory/3324-16-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/3324-17-0x00000000741FE000-0x00000000741FF000-memory.dmp

Filesize
4KB

Download
memory/3324-18-0x0000000005690000-0x0000000005C34000-memory.dmp

Filesize
5.6MB

Download
memory/3324-19-0x0000000005310000-0x0000000005376000-memory.dmp

Filesize
408KB

Download
memory/3324-20-0x00000000741F0000-0x00000000749A0000-memory.dmp

Filesize
7.7MB

Download
memory/4016-10-0x0000000000A70000-0x0000000000C4F000-memory.dmp

Filesize
1.9MB

Download
memory/4016-0-0x0000000000A70000-0x0000000000C4F000-memory.dmp

Filesize
1.9MB

Download
memory/4016-3-0x00000000014D0000-0x00000000018D0000-memory.dmp

Filesize
4.0MB

Download
memory/4108-22-0x0000000000A20000-0x0000000000BFF000-memory.dmp

Filesize
1.9MB

Download
memory/4108-14-0x0000000001250000-0x0000000001650000-memory.dmp

Filesize
4.0MB

Download
memory/4108-7-0x0000000000A20000-0x0000000000BFF000-memory.dmp

Filesize
1.9MB

Download

Analysis

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