agenttesla | 23e75ec66a6089a8e0355784dc0e86a43d510d929329ef325f9b8e7de1469ae9

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
3496	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/3692-8-0x0000000000540000-0x000000000071F000-memory.dmp	autoit_exe
behavioral2/memory/3496-14-0x00000000011E0000-0x00000000015E0000-memory.dmp	autoit_exe
behavioral2/memory/3496-22-0x0000000000080000-0x000000000025F000-memory.dmp	autoit_exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3496 set thread context of 676	3496	cunila.exe	83

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral2/memory/3692-0-0x0000000000540000-0x000000000071F000-memory.dmp	upx
behavioral2/files/0x0007000000023c97-6.dat	upx
behavioral2/memory/3496-9-0x0000000000080000-0x000000000025F000-memory.dmp	upx
behavioral2/memory/3692-8-0x0000000000540000-0x000000000071F000-memory.dmp	upx
behavioral2/memory/3496-22-0x0000000000080000-0x000000000025F000-memory.dmp	upx

Program crash 1 IoCs

pid	pid_target	Process	procid_target
3008	3496	WerFault.exe	82

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

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
676	RegSvcs.exe
676	RegSvcs.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
3496	cunila.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	676	RegSvcs.exe

Suspicious use of FindShellTrayWindow 4 IoCs

pid	Process
3692	SAL987656700.exe
3692	SAL987656700.exe
3496	cunila.exe
3496	cunila.exe

Suspicious use of SendNotifyMessage 4 IoCs

pid	Process
3692	SAL987656700.exe
3692	SAL987656700.exe
3496	cunila.exe
3496	cunila.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 3692 wrote to memory of 3496	3692	SAL987656700.exe	82
PID 3692 wrote to memory of 3496	3692	SAL987656700.exe	82
PID 3692 wrote to memory of 3496	3692	SAL987656700.exe	82
PID 3496 wrote to memory of 676	3496	cunila.exe	83
PID 3496 wrote to memory of 676	3496	cunila.exe	83
PID 3496 wrote to memory of 676	3496	cunila.exe	83
PID 3496 wrote to memory of 676	3496	cunila.exe	83

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:3692
- 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:3496
- - 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:676
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 3496 -s 664
    3⤵
    - Program crash
    PID:3008

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 184 -p 3496 -ip 3496
1⤵
PID:3704

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\gunfights

Filesize
239KB

MD5
ef21e86ae3a5a36104d1383c061b83e7

SHA1
53823269083797ead7f1230be529d8c543d2001d

SHA256
16c630d5dc716eeb21c6979c2e19e8d72a5e7b742e1b10aaab0d0d0f38afd94b

SHA512
a980df1fcfbf88a80d28cf758fb9933c0b223246b5c856e1728c872b422925513fa1cb34ecf73b43d887e34a3feedea446dd912d31a7c1b5c8603d8e68962f42

Download Submit
C:\Users\Admin\AppData\Local\enterogenous\cunila.exe

Filesize
871KB

MD5
a885a9c7468691538b78d54852b5a59c

SHA1
1b2340a366a6b28ac9d30f31bacef95afd0de595

SHA256
d2d196a12c822020c4042d607be77746951b6cb3c16201ff21ca8e9c5c786209

SHA512
903c918ef94c4dd9c8277c7cffe2774a26af285e1e41dcf71c5c3aee1fc65d1202a2eb227267bb044c050299acbfb67b970ca75e17f5da1fc48e89472f45173c

Download Submit
memory/676-23-0x0000000006570000-0x00000000065C0000-memory.dmp

Filesize
320KB

Download
memory/676-27-0x00000000741A0000-0x0000000074950000-memory.dmp

Filesize
7.7MB

Download
memory/676-26-0x00000000741AE000-0x00000000741AF000-memory.dmp

Filesize
4KB

Download
memory/676-25-0x0000000006600000-0x000000000660A000-memory.dmp

Filesize
40KB

Download
memory/676-24-0x0000000006660000-0x00000000066F2000-memory.dmp

Filesize
584KB

Download
memory/676-16-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/676-17-0x00000000741AE000-0x00000000741AF000-memory.dmp

Filesize
4KB

Download
memory/676-18-0x0000000005780000-0x0000000005D24000-memory.dmp

Filesize
5.6MB

Download
memory/676-19-0x00000000052D0000-0x0000000005336000-memory.dmp

Filesize
408KB

Download
memory/676-20-0x00000000741A0000-0x0000000074950000-memory.dmp

Filesize
7.7MB

Download
memory/3496-22-0x0000000000080000-0x000000000025F000-memory.dmp

Filesize
1.9MB

Download
memory/3496-14-0x00000000011E0000-0x00000000015E0000-memory.dmp

Filesize
4.0MB

Download
memory/3496-9-0x0000000000080000-0x000000000025F000-memory.dmp

Filesize
1.9MB

Download
memory/3692-0-0x0000000000540000-0x000000000071F000-memory.dmp

Filesize
1.9MB

Download
memory/3692-8-0x0000000000540000-0x000000000071F000-memory.dmp

Filesize
1.9MB

Download
memory/3692-3-0x0000000001260000-0x0000000001660000-memory.dmp

Filesize
4.0MB

Download

Analysis

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