agenttesla | 0096dc44d88cb2dc617a69d3b9fef566a848c661f00bee5a85afcb205a33aba9

General

Target

Signed PO.exe
Size

688KB
MD5

35427a284ae978c86b7eba2738564545
SHA1

6b1156236111f3af9754bfea4e61afb42be7d59f
SHA256

0096dc44d88cb2dc617a69d3b9fef566a848c661f00bee5a85afcb205a33aba9
SHA512

d8e02ab6b6e513de4225bbb0211a1a04957760bc409a0fd6cc94a1297242d1625e81fcbbc23c1feceba481f6380ca15de77891f2b7bbd903fb53fe70093b3435

Score

10^/10

agenttesla evasion keylogger spyware stealer trojan

Malware Config

Extracted

Credentials

Protocol: smtp
Host:
smtp.shirdilog.com
Port:
587
Username:
cs.maa@shirdilog.com
Password:
SL094521

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
smtp.shirdilog.com
Port:
587
Username:
cs.maa@shirdilog.com
Password:
SL094521

Signatures

AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
keylogger trojan stealer spyware agenttesla

AgentTesla Payload 2 IoCs

Processes:

resource	yara_rule
behavioral2/memory/416-13-0x0000000000400000-0x0000000000466000-memory.dmp	family_agenttesla
behavioral2/memory/416-14-0x00000000004612BE-mapping.dmp	family_agenttesla

Looks for VirtualBox Guest Additions in registry 2 TTPs
evasion

Query Registry
T1012

Virtualization/Sandbox Evasion
T1497
Looks for VMWare Tools registry key 2 TTPs
evasion

Query Registry
T1012

Virtualization/Sandbox Evasion
T1497

Checks BIOS information in registry 2 TTPs 2 IoCs

BIOS information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

Processes:

Signed PO.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	Signed PO.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	Signed PO.exe

Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
spyware

Data from Local System
T1005

Credentials in Files
T1081
Reads user/profile data of local email clients 2 TTPs
Email clients store some user data on disk where infostealers will often target it.
spyware

Data from Local System
T1005

Credentials in Files
T1081
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware

Data from Local System
T1005

Credentials in Files
T1081

Maps connected drives based on registry 3 TTPs 2 IoCs

Disk information is often read in order to detect sandboxing environments.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

Processes:

Signed PO.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	Signed PO.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum\0	Signed PO.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

Signed PO.exe

description pid process target process

PID 744 set thread context of 416 744 Signed PO.exe Signed PO.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082
Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
persistence

Scheduled Task
T1053

Processes:

schtasks.exe

pid process

3548 schtasks.exe
Modifies registry key 1 TTPs 1 IoCs

Modify Registry
T1112

Processes:

REG.exe

pid process

2424 REG.exe
Suspicious behavior: EnumeratesProcesses 3 IoCs

Processes:

Signed PO.exeSigned PO.exe

pid process

744 Signed PO.exe
416 Signed PO.exe
416 Signed PO.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

Signed PO.exeSigned PO.exe

description pid process

Token: SeDebugPrivilege 744 Signed PO.exe
Token: SeDebugPrivilege 416 Signed PO.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

Signed PO.exe

pid process

416 Signed PO.exe

description	pid	process	target process
PID 744 set thread context of 416	744	Signed PO.exe	Signed PO.exe

pid	process
3548	schtasks.exe

pid	process
2424	REG.exe

pid	process
744	Signed PO.exe
416	Signed PO.exe
416	Signed PO.exe

description	pid	process
Token: SeDebugPrivilege	744	Signed PO.exe
Token: SeDebugPrivilege	416	Signed PO.exe

pid	process
416	Signed PO.exe

Suspicious use of WriteProcessMemory 14 IoCs

Processes:

Signed PO.exeSigned PO.exe

description	pid	process	target process
PID 744 wrote to memory of 3548	744	Signed PO.exe	schtasks.exe
PID 744 wrote to memory of 3548	744	Signed PO.exe	schtasks.exe
PID 744 wrote to memory of 3548	744	Signed PO.exe	schtasks.exe
PID 744 wrote to memory of 416	744	Signed PO.exe	Signed PO.exe
PID 744 wrote to memory of 416	744	Signed PO.exe	Signed PO.exe
PID 744 wrote to memory of 416	744	Signed PO.exe	Signed PO.exe
PID 744 wrote to memory of 416	744	Signed PO.exe	Signed PO.exe
PID 744 wrote to memory of 416	744	Signed PO.exe	Signed PO.exe
PID 744 wrote to memory of 416	744	Signed PO.exe	Signed PO.exe
PID 744 wrote to memory of 416	744	Signed PO.exe	Signed PO.exe
PID 744 wrote to memory of 416	744	Signed PO.exe	Signed PO.exe
PID 416 wrote to memory of 2424	416	Signed PO.exe	REG.exe
PID 416 wrote to memory of 2424	416	Signed PO.exe	REG.exe
PID 416 wrote to memory of 2424	416	Signed PO.exe	REG.exe

C:\Users\Admin\AppData\Local\Temp\Signed PO.exe
"C:\Users\Admin\AppData\Local\Temp\Signed PO.exe"
1⤵
- Checks BIOS information in registry
- Maps connected drives based on registry
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:744

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\znfoxXua" /XML "C:\Users\Admin\AppData\Local\Temp\tmp57F.tmp"
2⤵
- Creates scheduled task(s)
PID:3548

C:\Users\Admin\AppData\Local\Temp\Signed PO.exe
"{path}"
2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:416

C:\Windows\SysWOW64\REG.exe
REG add HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer / v NoRun / t REG_DWORD / d 1 / f
3⤵
- Modifies registry key
PID:2424

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scheduled Task

1

T1053

Persistence

Scheduled Task

1

T1053

Privilege Escalation

Scheduled Task

1

T1053

Defense Evasion

Virtualization/Sandbox Evasion

2

T1497

Modify Registry

1

T1112

Credential Access

Credentials in Files

3

T1081

Discovery

Query Registry

4

T1012

Virtualization/Sandbox Evasion

2

T1497

System Information Discovery

3

T1082

Peripheral Device Discovery

1

T1120

Lateral Movement

Collection

Data from Local System

3

T1005

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp57F.tmp
MD5
3418e4cba4bcfaffa760e49ad9fff459

SHA1
363108973996353081e84a321bee18c8afa8b125

SHA256
6d9d7cadd6541258e0d8a8ad5865e36cad8a29af1ed4b11a76c9bddab1683e80

SHA512
82c5ecc1cb1e6234302ce36c5078edd886ae331202af40c66564407d9f8378cfb28662f14928d5ca2ed2405a111885e9b6838183a7afba1016f0e764e6600653

Download Submit
memory/416-20-0x0000000005590000-0x0000000005591000-memory.dmp

Filesize
4KB

Download
memory/416-15-0x0000000073A20000-0x000000007410E000-memory.dmp

Filesize
6.9MB

Download
memory/416-14-0x00000000004612BE-mapping.dmp

Download
memory/416-13-0x0000000000400000-0x0000000000466000-memory.dmp

Filesize
408KB

Download
memory/744-5-0x0000000004C70000-0x0000000004C71000-memory.dmp

Filesize
4KB

Download
memory/744-7-0x0000000008200000-0x0000000008214000-memory.dmp

Filesize
80KB

Download
memory/744-8-0x00000000083C0000-0x00000000083C1000-memory.dmp

Filesize
4KB

Download
memory/744-9-0x0000000008600000-0x000000000868A000-memory.dmp

Filesize
552KB

Download
memory/744-10-0x0000000008C50000-0x0000000008C51000-memory.dmp

Filesize
4KB

Download
memory/744-6-0x0000000008690000-0x0000000008691000-memory.dmp

Filesize
4KB

Download
memory/744-0-0x0000000073A20000-0x000000007410E000-memory.dmp

Filesize
6.9MB

Download
memory/744-4-0x0000000004D20000-0x0000000004D21000-memory.dmp

Filesize
4KB

Download
memory/744-3-0x0000000005220000-0x0000000005221000-memory.dmp

Filesize
4KB

Download
memory/744-1-0x0000000000390000-0x0000000000391000-memory.dmp

Filesize
4KB

Download
memory/2424-22-0x0000000000000000-mapping.dmp

Download
memory/3548-11-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads