agenttesla | 7a7e2a413b9ef82df28db3a4beabd9921a834228288eeb4035f1a45ecb36f3b5

General

Target

DOCUMENTS.exe
Size

606KB
MD5

acf124579e7f180928628d6b02701dbf
SHA1

35e410ca0183d5a026ff6418e82bf722d76b58c2
SHA256

3f33e7bde9dcaafa436e0cb2e267371768115ea14de2a9860cefa74af71e9155
SHA512

6572acf3bd665f6eb55956d9226b0057f49c1b8244888c1d2cc0be850ed4a06436d77e482d781e963b6eaf97e5fe4000c6c80a90ad23b30656e2e34ee8df44f8

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:
reports@microtechlab.in
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/956-64-0x0000000000400000-0x0000000000452000-memory.dmp	family_agenttesla
behavioral1/memory/956-65-0x0000000000400000-0x0000000000452000-memory.dmp	family_agenttesla
behavioral1/memory/956-66-0x0000000000400000-0x0000000000452000-memory.dmp	family_agenttesla
behavioral1/memory/956-67-0x000000000044CF5E-mapping.dmp	family_agenttesla
behavioral1/memory/956-69-0x0000000000400000-0x0000000000452000-memory.dmp	family_agenttesla
behavioral1/memory/956-71-0x0000000000400000-0x0000000000452000-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/1648-58-0x0000000004D20000-0x0000000004D78000-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:

DOCUMENTS.exe

description pid process target process

PID 1648 set thread context of 956 1648 DOCUMENTS.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

2044 schtasks.exe
Modifies registry key 1 TTPs 1 IoCs

Modify Registry
T1112

Processes:

REG.exe

pid process

1492 REG.exe
Suspicious behavior: EnumeratesProcesses 7 IoCs

Processes:

DOCUMENTS.exeRegSvcs.exe

pid process

1648 DOCUMENTS.exe
1648 DOCUMENTS.exe
1648 DOCUMENTS.exe
1648 DOCUMENTS.exe
1648 DOCUMENTS.exe
956 RegSvcs.exe
956 RegSvcs.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

DOCUMENTS.exeRegSvcs.exe

description pid process

Token: SeDebugPrivilege 1648 DOCUMENTS.exe
Token: SeDebugPrivilege 956 RegSvcs.exe

description	pid	process	target process
PID 1648 set thread context of 956	1648	DOCUMENTS.exe	RegSvcs.exe

pid	process
2044	schtasks.exe

pid	process
1492	REG.exe

pid	process
1648	DOCUMENTS.exe
1648	DOCUMENTS.exe
1648	DOCUMENTS.exe
1648	DOCUMENTS.exe
1648	DOCUMENTS.exe
956	RegSvcs.exe
956	RegSvcs.exe

description	pid	process
Token: SeDebugPrivilege	1648	DOCUMENTS.exe
Token: SeDebugPrivilege	956	RegSvcs.exe

Suspicious use of WriteProcessMemory 38 IoCs

Processes:

DOCUMENTS.exeRegSvcs.exe

description	pid	process	target process
PID 1648 wrote to memory of 2044	1648	DOCUMENTS.exe	schtasks.exe
PID 1648 wrote to memory of 2044	1648	DOCUMENTS.exe	schtasks.exe
PID 1648 wrote to memory of 2044	1648	DOCUMENTS.exe	schtasks.exe
PID 1648 wrote to memory of 2044	1648	DOCUMENTS.exe	schtasks.exe
PID 1648 wrote to memory of 1148	1648	DOCUMENTS.exe	RegSvcs.exe
PID 1648 wrote to memory of 1148	1648	DOCUMENTS.exe	RegSvcs.exe
PID 1648 wrote to memory of 1148	1648	DOCUMENTS.exe	RegSvcs.exe
PID 1648 wrote to memory of 1148	1648	DOCUMENTS.exe	RegSvcs.exe
PID 1648 wrote to memory of 1148	1648	DOCUMENTS.exe	RegSvcs.exe
PID 1648 wrote to memory of 1148	1648	DOCUMENTS.exe	RegSvcs.exe
PID 1648 wrote to memory of 1148	1648	DOCUMENTS.exe	RegSvcs.exe
PID 1648 wrote to memory of 564	1648	DOCUMENTS.exe	RegSvcs.exe
PID 1648 wrote to memory of 564	1648	DOCUMENTS.exe	RegSvcs.exe
PID 1648 wrote to memory of 564	1648	DOCUMENTS.exe	RegSvcs.exe
PID 1648 wrote to memory of 564	1648	DOCUMENTS.exe	RegSvcs.exe
PID 1648 wrote to memory of 564	1648	DOCUMENTS.exe	RegSvcs.exe
PID 1648 wrote to memory of 564	1648	DOCUMENTS.exe	RegSvcs.exe
PID 1648 wrote to memory of 564	1648	DOCUMENTS.exe	RegSvcs.exe
PID 1648 wrote to memory of 956	1648	DOCUMENTS.exe	RegSvcs.exe
PID 1648 wrote to memory of 956	1648	DOCUMENTS.exe	RegSvcs.exe
PID 1648 wrote to memory of 956	1648	DOCUMENTS.exe	RegSvcs.exe
PID 1648 wrote to memory of 956	1648	DOCUMENTS.exe	RegSvcs.exe
PID 1648 wrote to memory of 956	1648	DOCUMENTS.exe	RegSvcs.exe
PID 1648 wrote to memory of 956	1648	DOCUMENTS.exe	RegSvcs.exe
PID 1648 wrote to memory of 956	1648	DOCUMENTS.exe	RegSvcs.exe
PID 1648 wrote to memory of 956	1648	DOCUMENTS.exe	RegSvcs.exe
PID 1648 wrote to memory of 956	1648	DOCUMENTS.exe	RegSvcs.exe
PID 1648 wrote to memory of 956	1648	DOCUMENTS.exe	RegSvcs.exe
PID 1648 wrote to memory of 956	1648	DOCUMENTS.exe	RegSvcs.exe
PID 1648 wrote to memory of 956	1648	DOCUMENTS.exe	RegSvcs.exe
PID 956 wrote to memory of 1492	956	RegSvcs.exe	REG.exe
PID 956 wrote to memory of 1492	956	RegSvcs.exe	REG.exe
PID 956 wrote to memory of 1492	956	RegSvcs.exe	REG.exe
PID 956 wrote to memory of 1492	956	RegSvcs.exe	REG.exe
PID 956 wrote to memory of 788	956	RegSvcs.exe	netsh.exe
PID 956 wrote to memory of 788	956	RegSvcs.exe	netsh.exe
PID 956 wrote to memory of 788	956	RegSvcs.exe	netsh.exe
PID 956 wrote to memory of 788	956	RegSvcs.exe	netsh.exe

C:\Users\Admin\AppData\Local\Temp\DOCUMENTS.exe
"C:\Users\Admin\AppData\Local\Temp\DOCUMENTS.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1648

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\YRoztVRNUab" /XML "C:\Users\Admin\AppData\Local\Temp\tmpFB9E.tmp"
2⤵
- Creates scheduled task(s)
PID:2044

C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
"{path}"
2⤵
PID:1148

C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
"{path}"
2⤵
PID:564

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:956

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:1492

C:\Windows\SysWOW64\netsh.exe
"netsh" wlan show profile
3⤵
PID:788

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

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmpFB9E.tmp
Filesize
1KB

MD5
26cc4c3b3675f52de2e26682cfd65358

SHA1
0150d850b922703441e939468d4abacd480c17fa

SHA256
496a51fb80604354dea5ab190bce71c8c59ba7e61da2076363e9648c17cc2791

SHA512
cf6ee7d043138edf27701377c539877850deae846298ec6a07e51a128bb7739beec8d82b7ce568d09b4802b1868b411bd001c824ed09527939ec76b4cef0a2b3

Download Submit
memory/788-74-0x0000000000000000-mapping.dmp

Download
memory/956-67-0x000000000044CF5E-mapping.dmp

Download
memory/956-66-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/956-71-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/956-69-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/956-61-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/956-62-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/956-64-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/956-65-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/1492-73-0x0000000000000000-mapping.dmp

Download
memory/1648-56-0x00000000755C1000-0x00000000755C3000-memory.dmp

Filesize
8KB

Download
memory/1648-54-0x0000000000CC0000-0x0000000000D5E000-memory.dmp

Filesize
632KB

Download
memory/1648-57-0x0000000000410000-0x0000000000418000-memory.dmp

Filesize
32KB

Download
memory/1648-58-0x0000000004D20000-0x0000000004D78000-memory.dmp

Filesize
352KB

Download
memory/1648-55-0x0000000004160000-0x00000000041C2000-memory.dmp

Filesize
392KB

Download
memory/2044-59-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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