agenttesla | 3a94befc248570bf58be57f7b0e146985221219aefed7e437ddf865711b7c069

General

Target

Purchase - Order.exe
Size

491KB
MD5

c25db03537a94168fe05f968720c735a
SHA1

bdf8b7786bdd448a689e06347895ca8dbddab79c
SHA256

3a94befc248570bf58be57f7b0e146985221219aefed7e437ddf865711b7c069
SHA512

26f27f98183de9f87807add66919fbeabf1e6373dfd98360348860f551f3292deb347560cd2ac0fe7372424374d5f1b8a8add9d92739bca32e725374bb974241

Score

10^/10

agenttesla evasion keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
mail.zakhourco.com
Port:
587
Username:
mira.kassar@zakhourco.com
Password:
#Za$out%12

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/1164-127-0x0000000000400000-0x000000000043C000-memory.dmp	family_agenttesla
behavioral2/memory/1164-128-0x000000000043784E-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:

Purchase - Order.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	Purchase - Order.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	Purchase - Order.exe

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

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 stealer

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 stealer

Data from Local System
T1005

Credentials in Files
T1081

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

Purchase - Order.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-1594587808-2047097707-2163810515-1000\Software\Microsoft\Windows\CurrentVersion\Run\lfEDL = "C:\\Users\\Admin\\AppData\\Roaming\\lfEDL\\lfEDL.exe"	Purchase - Order.exe

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:

Purchase - Order.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	Purchase - Order.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum\0	Purchase - Order.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

Purchase - Order.exe

description pid process target process

PID 672 set thread context of 1164 672 Purchase - Order.exe Purchase - Order.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

3744 schtasks.exe
Suspicious behavior: EnumeratesProcesses 3 IoCs

Processes:

Purchase - Order.exePurchase - Order.exe

pid process

672 Purchase - Order.exe
1164 Purchase - Order.exe
1164 Purchase - Order.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

Purchase - Order.exePurchase - Order.exe

description pid process

Token: SeDebugPrivilege 672 Purchase - Order.exe
Token: SeDebugPrivilege 1164 Purchase - Order.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

Purchase - Order.exe

pid process

1164 Purchase - Order.exe

description	pid	process	target process
PID 672 set thread context of 1164	672	Purchase - Order.exe	Purchase - Order.exe

pid	process
3744	schtasks.exe

pid	process
672	Purchase - Order.exe
1164	Purchase - Order.exe
1164	Purchase - Order.exe

description	pid	process
Token: SeDebugPrivilege	672	Purchase - Order.exe
Token: SeDebugPrivilege	1164	Purchase - Order.exe

pid	process
1164	Purchase - Order.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

Purchase - Order.exe

description	pid	process	target process
PID 672 wrote to memory of 3744	672	Purchase - Order.exe	schtasks.exe
PID 672 wrote to memory of 3744	672	Purchase - Order.exe	schtasks.exe
PID 672 wrote to memory of 3744	672	Purchase - Order.exe	schtasks.exe
PID 672 wrote to memory of 1164	672	Purchase - Order.exe	Purchase - Order.exe
PID 672 wrote to memory of 1164	672	Purchase - Order.exe	Purchase - Order.exe
PID 672 wrote to memory of 1164	672	Purchase - Order.exe	Purchase - Order.exe
PID 672 wrote to memory of 1164	672	Purchase - Order.exe	Purchase - Order.exe
PID 672 wrote to memory of 1164	672	Purchase - Order.exe	Purchase - Order.exe
PID 672 wrote to memory of 1164	672	Purchase - Order.exe	Purchase - Order.exe
PID 672 wrote to memory of 1164	672	Purchase - Order.exe	Purchase - Order.exe
PID 672 wrote to memory of 1164	672	Purchase - Order.exe	Purchase - Order.exe

C:\Users\Admin\AppData\Local\Temp\Purchase - Order.exe
"C:\Users\Admin\AppData\Local\Temp\Purchase - Order.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:672

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\wzqcOpgNYsw" /XML "C:\Users\Admin\AppData\Local\Temp\tmp1435.tmp"
2⤵
- Creates scheduled task(s)
PID:3744

C:\Users\Admin\AppData\Local\Temp\Purchase - Order.exe
"{path}"
2⤵
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
PID:1164

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scheduled Task

1

T1053

Persistence

Registry Run Keys / Startup Folder

1

T1060

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\tmp1435.tmp
MD5
058d042ca63c620426c16d4b65cf6556

SHA1
b1630a3dc0e6ba791d98c1e9181ab08bc19f23d0

SHA256
54d23bfcee2d4450d507411ccb4275d1d3c51f46dd3957fbaa3449440963c6f9

SHA512
57004b8df898856c47c9236595b27258dda1fc4e9086e0549c3a855685f5edb5af11b78e323a0eb57e68e18a5bb278be5ce233e67ca7347cf9b3a96049e70dde

Download Submit
memory/672-123-0x00000000069A0000-0x00000000069DD000-memory.dmp

Filesize
244KB

Download
memory/672-124-0x0000000006C20000-0x0000000006C21000-memory.dmp

Filesize
4KB

Download
memory/672-118-0x0000000004FA0000-0x000000000549E000-memory.dmp

Filesize
5.0MB

Download
memory/672-119-0x0000000005070000-0x0000000005071000-memory.dmp

Filesize
4KB

Download
memory/672-120-0x00000000084C0000-0x00000000084C2000-memory.dmp

Filesize
8KB

Download
memory/672-121-0x0000000008720000-0x0000000008721000-memory.dmp

Filesize
4KB

Download
memory/672-117-0x0000000004FA0000-0x0000000004FA1000-memory.dmp

Filesize
4KB

Download
memory/672-114-0x0000000000650000-0x0000000000651000-memory.dmp

Filesize
4KB

Download
memory/672-122-0x0000000006A40000-0x0000000006AC2000-memory.dmp

Filesize
520KB

Download
memory/672-116-0x00000000054A0000-0x00000000054A1000-memory.dmp

Filesize
4KB

Download
memory/1164-127-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download
memory/1164-128-0x000000000043784E-mapping.dmp

Download
memory/1164-133-0x0000000005500000-0x0000000005501000-memory.dmp

Filesize
4KB

Download
memory/1164-134-0x00000000056B0000-0x00000000056B1000-memory.dmp

Filesize
4KB

Download
memory/3744-125-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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