agenttesla | a59082f4ba00e99d337541e27c3625e9f1d4a7d3174bbd9f46f4ef0ef143c316

General

Target

PO.exe
Size

474KB
MD5

bbcf7d3c452a1f979cebfdbb7ef6220a
SHA1

35cdbbcc31606bc42702fda23292afb3a6f4be23
SHA256

b8214924a598b9fd3193099fecd6c3d09f06dc5e3a9af098642c7d5327c05cd3
SHA512

2fb4bd3808ba1681363c56b5e47013f6c8938ee07e3cb6e2d7fab2a89a4f6aacdf4b6adb889c3554b96e4a03e69ed7f6b9d5ae0c74a05021c8e92b60f98bbb3c

Score

10^/10

agenttesla evasion keylogger persistence rezer0 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 6 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1316-63-0x0000000000400000-0x0000000000452000-memory.dmp	family_agenttesla
behavioral1/memory/1316-64-0x0000000000400000-0x0000000000452000-memory.dmp	family_agenttesla
behavioral1/memory/1316-65-0x0000000000400000-0x0000000000452000-memory.dmp	family_agenttesla
behavioral1/memory/1316-66-0x000000000044CF5E-mapping.dmp	family_agenttesla
behavioral1/memory/1316-68-0x0000000000400000-0x0000000000452000-memory.dmp	family_agenttesla
behavioral1/memory/1316-70-0x0000000000400000-0x0000000000452000-memory.dmp	family_agenttesla

ReZer0 packer 1 IoCs

Detects ReZer0, a packer with multiple versions used in various campaigns.

rezer0

Processes:

resource	yara_rule
behavioral1/memory/1364-57-0x0000000004670000-0x00000000046C8000-memory.dmp	rezer0

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

description	ioc	process
File opened for modification	C:\Windows\system32\drivers\etc\hosts	RegSvcs.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-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Windows\CurrentVersion\Run\CpSnJ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\CpSnJ\\CpSnJ.exe"	RegSvcs.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

PO.exe

description pid process target process

PID 1364 set thread context of 1316 1364 PO.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
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

1704 schtasks.exe
Modifies registry key 1 TTPs 1 IoCs

Modify Registry
T1112

Processes:

REG.exe

pid process

1632 REG.exe
Suspicious behavior: EnumeratesProcesses 3 IoCs

Processes:

PO.exeRegSvcs.exe

pid process

1364 PO.exe
1316 RegSvcs.exe
1316 RegSvcs.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

PO.exeRegSvcs.exe

description pid process

Token: SeDebugPrivilege 1364 PO.exe
Token: SeDebugPrivilege 1316 RegSvcs.exe

description	pid	process	target process
PID 1364 set thread context of 1316	1364	PO.exe	RegSvcs.exe

pid	process
1704	schtasks.exe

pid	process
1632	REG.exe

pid	process
1364	PO.exe
1316	RegSvcs.exe
1316	RegSvcs.exe

description	pid	process
Token: SeDebugPrivilege	1364	PO.exe
Token: SeDebugPrivilege	1316	RegSvcs.exe

Suspicious use of WriteProcessMemory 20 IoCs

Processes:

PO.exeRegSvcs.exe

description	pid	process	target process
PID 1364 wrote to memory of 1704	1364	PO.exe	schtasks.exe
PID 1364 wrote to memory of 1704	1364	PO.exe	schtasks.exe
PID 1364 wrote to memory of 1704	1364	PO.exe	schtasks.exe
PID 1364 wrote to memory of 1704	1364	PO.exe	schtasks.exe
PID 1364 wrote to memory of 1316	1364	PO.exe	RegSvcs.exe
PID 1364 wrote to memory of 1316	1364	PO.exe	RegSvcs.exe
PID 1364 wrote to memory of 1316	1364	PO.exe	RegSvcs.exe
PID 1364 wrote to memory of 1316	1364	PO.exe	RegSvcs.exe
PID 1364 wrote to memory of 1316	1364	PO.exe	RegSvcs.exe
PID 1364 wrote to memory of 1316	1364	PO.exe	RegSvcs.exe
PID 1364 wrote to memory of 1316	1364	PO.exe	RegSvcs.exe
PID 1364 wrote to memory of 1316	1364	PO.exe	RegSvcs.exe
PID 1364 wrote to memory of 1316	1364	PO.exe	RegSvcs.exe
PID 1364 wrote to memory of 1316	1364	PO.exe	RegSvcs.exe
PID 1364 wrote to memory of 1316	1364	PO.exe	RegSvcs.exe
PID 1364 wrote to memory of 1316	1364	PO.exe	RegSvcs.exe
PID 1316 wrote to memory of 1632	1316	RegSvcs.exe	REG.exe
PID 1316 wrote to memory of 1632	1316	RegSvcs.exe	REG.exe
PID 1316 wrote to memory of 1632	1316	RegSvcs.exe	REG.exe
PID 1316 wrote to memory of 1632	1316	RegSvcs.exe	REG.exe

C:\Users\Admin\AppData\Local\Temp\PO.exe
"C:\Users\Admin\AppData\Local\Temp\PO.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1364

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\LKptDWYQbOOY" /XML "C:\Users\Admin\AppData\Local\Temp\tmpC7E2.tmp"
2⤵
- Creates scheduled task(s)
PID:1704

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:1316

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:1632

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

Modify Registry

2

T1112

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmpC7E2.tmp
Filesize
1KB

MD5
65f83a92e9942d0f43285eecbf589b85

SHA1
ee1c25a45be5569e77dab39417a4b77448a9ffda

SHA256
148729256045ae624d2c1dc8b00b818cc06733b120affaaa86910e617ceb60ad

SHA512
b6ba02b756639b289445735db9a4bb4616526b79fb32f0d6cdc14ad04816d468fb4bf24d54c3bd095dd32954938a934b9364b825e1f00b6f4f006a32de7e25f0

Download Submit
memory/1316-64-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/1316-66-0x000000000044CF5E-mapping.dmp

Download
memory/1316-70-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/1316-68-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/1316-65-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/1316-60-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/1316-61-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/1316-63-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/1364-54-0x0000000000EB0000-0x0000000000F2C000-memory.dmp

Filesize
496KB

Download
memory/1364-55-0x00000000765F1000-0x00000000765F3000-memory.dmp

Filesize
8KB

Download
memory/1364-56-0x0000000000600000-0x0000000000610000-memory.dmp

Filesize
64KB

Download
memory/1364-57-0x0000000004670000-0x00000000046C8000-memory.dmp

Filesize
352KB

Download
memory/1632-72-0x0000000000000000-mapping.dmp

Download
memory/1704-58-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads