agenttesla | a12effc1cc59aa1fe8594928e9609a02f96b9e4d824585783ff8d7f7e8025922

General

Target

SOA.exe
Size

417KB
MD5

165130b6f1683492c451dec6352a2f16
SHA1

f896e10ebea74ac93dd4bd7db1bb947ca78b6c46
SHA256

9cacb5c20d8617cc4d21dd39eca22349b94ae4bb9e4baf544fc25584cf0288de
SHA512

94d0866a944ca48da10ad294c029bde05d67fdeb0720edc7253b694ef4b3248b1aa682ee59887f7d0bfcf51d18f894d80c4e8b31563d9c6d03c356f91415e98f

Score

10^/10

agenttesla evasion keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
mail.microtechlab.in
Port:
587
Username:
[email protected]
Password:
pune@123

Signatures

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

AgentTesla Payload 1 IoCs

Processes:

resource	yara_rule
behavioral2/memory/1912-139-0x0000000000400000-0x0000000000452000-memory.dmp	family_agenttesla

Looks for VirtualBox Guest Additions in registry 2 TTPs
evasion

Query Registry
T1012

Virtualization/Sandbox Evasion
T1497
Disables Task Manager via registry modification
evasion
Drops file in Drivers directory 1 IoCs

Processes:

RegSvcs.exe

description ioc process

File opened for modification C:\Windows\system32\drivers\etc\hosts RegSvcs.exe
Looks for VMWare Tools registry key 2 TTPs
evasion

Query Registry
T1012

Virtualization/Sandbox Evasion
T1497

description	ioc	process
File opened for modification	C:\Windows\system32\drivers\etc\hosts	RegSvcs.exe

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:

SOA.exe

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

Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.

Query Registry
T1012

System Information Discovery
T1082

Processes:

SOA.exe

description ioc process

Key value queried \REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\Control Panel\International\Geo\Nation SOA.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\Control Panel\International\Geo\Nation	SOA.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

RegSvcs.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\CpSnJ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\CpSnJ\\CpSnJ.exe"	RegSvcs.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:

SOA.exe

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

Suspicious use of SetThreadContext 1 IoCs

Processes:

SOA.exe

description pid process target process

PID 4580 set thread context of 1912 4580 SOA.exe RegSvcs.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082
Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

3600 1912 WerFault.exe RegSvcs.exe
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

964 schtasks.exe
Modifies registry key 1 TTPs 1 IoCs

Modify Registry
T1112

Processes:

REG.exe

pid process

444 REG.exe
Suspicious behavior: EnumeratesProcesses 3 IoCs

Processes:

SOA.exeRegSvcs.exe

pid process

4580 SOA.exe
1912 RegSvcs.exe
1912 RegSvcs.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

SOA.exeRegSvcs.exe

description pid process

Token: SeDebugPrivilege 4580 SOA.exe
Token: SeDebugPrivilege 1912 RegSvcs.exe

description	pid	process	target process
PID 4580 set thread context of 1912	4580	SOA.exe	RegSvcs.exe

pid	pid_target	process	target process
3600	1912	WerFault.exe	RegSvcs.exe

pid	process
964	schtasks.exe

pid	process
444	REG.exe

pid	process
4580	SOA.exe
1912	RegSvcs.exe
1912	RegSvcs.exe

description	pid	process
Token: SeDebugPrivilege	4580	SOA.exe
Token: SeDebugPrivilege	1912	RegSvcs.exe

Suspicious use of WriteProcessMemory 17 IoCs

Processes:

SOA.exeRegSvcs.exe

description	pid	process	target process
PID 4580 wrote to memory of 964	4580	SOA.exe	schtasks.exe
PID 4580 wrote to memory of 964	4580	SOA.exe	schtasks.exe
PID 4580 wrote to memory of 964	4580	SOA.exe	schtasks.exe
PID 4580 wrote to memory of 1912	4580	SOA.exe	RegSvcs.exe
PID 4580 wrote to memory of 1912	4580	SOA.exe	RegSvcs.exe
PID 4580 wrote to memory of 1912	4580	SOA.exe	RegSvcs.exe
PID 4580 wrote to memory of 1912	4580	SOA.exe	RegSvcs.exe
PID 4580 wrote to memory of 1912	4580	SOA.exe	RegSvcs.exe
PID 4580 wrote to memory of 1912	4580	SOA.exe	RegSvcs.exe
PID 4580 wrote to memory of 1912	4580	SOA.exe	RegSvcs.exe
PID 4580 wrote to memory of 1912	4580	SOA.exe	RegSvcs.exe
PID 1912 wrote to memory of 444	1912	RegSvcs.exe	REG.exe
PID 1912 wrote to memory of 444	1912	RegSvcs.exe	REG.exe
PID 1912 wrote to memory of 444	1912	RegSvcs.exe	REG.exe
PID 1912 wrote to memory of 4156	1912	RegSvcs.exe	netsh.exe
PID 1912 wrote to memory of 4156	1912	RegSvcs.exe	netsh.exe
PID 1912 wrote to memory of 4156	1912	RegSvcs.exe	netsh.exe

C:\Users\Admin\AppData\Local\Temp\SOA.exe
"C:\Users\Admin\AppData\Local\Temp\SOA.exe"
1⤵
- Checks BIOS information in registry
- Checks computer location settings
- Maps connected drives based on registry
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4580

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\QYzRHYUONvA" /XML "C:\Users\Admin\AppData\Local\Temp\tmp7290.tmp"
2⤵
- Creates scheduled task(s)
PID:964

C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
"{path}"
2⤵
- Drops file in Drivers directory
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1912

C:\Windows\SysWOW64\REG.exe
REG add HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\System /v DisableTaskMgr /t REG_DWORD /d 1 /f
3⤵
- Modifies registry key
PID:444

C:\Windows\SysWOW64\netsh.exe
"netsh" wlan show profile
3⤵
PID:4156

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 1912 -s 1612
3⤵
- Program crash
PID:3600

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 412 -p 1912 -ip 1912
1⤵
PID:1572

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

1

T1053

Persistence

Registry Run Keys / Startup Folder

Scheduled Task

Privilege Escalation

Scheduled Task

1

T1053

Defense Evasion

Modify Registry

2

T1112

Virtualization/Sandbox Evasion

2

T1497

Credential Access

Discovery

Peripheral Device Discovery

Query Registry

System Information Discovery

4

T1082

Virtualization/Sandbox Evasion

2

T1497

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp7290.tmp

Filesize
1KB

MD5
85da2d05063e83085598c078e71ca302

SHA1
bbb49221883a30c8296d6c19cfb55e9b7836b27a

SHA256
1d951bacfa601ae85b33e58fb224dac218e4d59c4520c8ced96f2a3cbaf3f72f

SHA512
c32e33a662688bbeceb0f6f0aea8cc737c56f447d977a99dd94940888d6e3e3be054ad008b55a26ccf5cd13949758b1687f799cbe61e2f1b7164eda9c12b77e4

Download Submit
memory/444-140-0x0000000000000000-mapping.dmp

Download
memory/964-136-0x0000000000000000-mapping.dmp

Download
memory/1912-139-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/1912-138-0x0000000000000000-mapping.dmp

Download
memory/1912-141-0x0000000006460000-0x00000000064B0000-memory.dmp

Filesize
320KB

Download
memory/4156-142-0x0000000000000000-mapping.dmp

Download
memory/4580-134-0x0000000008380000-0x000000000841C000-memory.dmp

Filesize
624KB

Download
memory/4580-135-0x0000000008810000-0x0000000008876000-memory.dmp

Filesize
408KB

Download
memory/4580-133-0x0000000004D80000-0x0000000004D8A000-memory.dmp

Filesize
40KB

Download
memory/4580-132-0x0000000004AB0000-0x0000000004B42000-memory.dmp

Filesize
584KB

Download
memory/4580-130-0x00000000001C0000-0x000000000022E000-memory.dmp

Filesize
440KB

Download
memory/4580-131-0x0000000005060000-0x0000000005604000-memory.dmp

Filesize
5.6MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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