agenttesla | 97b45eb247e2111c62c265af0722b90706db3320c65e99e7746ac2686ae71a16

General

Target

PO.NO.062.jpg.exe
Size

421KB
MD5

458145b74718d73399391f3cd02e6192
SHA1

058788cc18f08f58e4104e33b9546f91053102f3
SHA256

008d79b95dd17c51b103bf87aabf1e5a3ecff06c2ff26a5b5bce23ac1e0dda9c
SHA512

e44d1fea9445603417ede137eb38462d47b63c035ed9bd81b1c901fa6d98594c54dfb16fee48f7deccad8086b107af7d664e604dc8cce64ee9781aa5d08cae68

Score

10^/10

agenttesla collection keylogger persistence rezer0 spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
mail.aquariuslogistics.com
Port:
587
Username:
[email protected]
Password:
AQL@2019#$

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/2020-63-0x0000000000400000-0x000000000044E000-memory.dmp	family_agenttesla
behavioral1/memory/2020-64-0x0000000000400000-0x000000000044E000-memory.dmp	family_agenttesla
behavioral1/memory/2020-65-0x0000000000400000-0x000000000044E000-memory.dmp	family_agenttesla
behavioral1/memory/2020-66-0x000000000044833E-mapping.dmp	family_agenttesla
behavioral1/memory/2020-68-0x0000000000400000-0x000000000044E000-memory.dmp	family_agenttesla
behavioral1/memory/2020-70-0x0000000000400000-0x000000000044E000-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/1496-56-0x00000000007B0000-0x0000000000804000-memory.dmp	rezer0

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

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

Processes:

RegSvcs.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe
Key opened	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe
Key opened	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	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.NO.062.jpg.exe

description pid process target process

PID 1496 set thread context of 2020 1496 PO.NO.062.jpg.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

1308 schtasks.exe
Modifies registry key 1 TTPs 1 IoCs

Modify Registry
T1112

Processes:

REG.exe

pid process

1816 REG.exe
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

RegSvcs.exe

pid process

2020 RegSvcs.exe
2020 RegSvcs.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

RegSvcs.exe

description pid process

Token: SeDebugPrivilege 2020 RegSvcs.exe

description	pid	process	target process
PID 1496 set thread context of 2020	1496	PO.NO.062.jpg.exe	RegSvcs.exe

pid	process
1308	schtasks.exe

pid	process
1816	REG.exe

pid	process
2020	RegSvcs.exe
2020	RegSvcs.exe

description	pid	process
Token: SeDebugPrivilege	2020	RegSvcs.exe

Suspicious use of WriteProcessMemory 20 IoCs

Processes:

PO.NO.062.jpg.exeRegSvcs.exe

description	pid	process	target process
PID 1496 wrote to memory of 1308	1496	PO.NO.062.jpg.exe	schtasks.exe
PID 1496 wrote to memory of 1308	1496	PO.NO.062.jpg.exe	schtasks.exe
PID 1496 wrote to memory of 1308	1496	PO.NO.062.jpg.exe	schtasks.exe
PID 1496 wrote to memory of 1308	1496	PO.NO.062.jpg.exe	schtasks.exe
PID 1496 wrote to memory of 2020	1496	PO.NO.062.jpg.exe	RegSvcs.exe
PID 1496 wrote to memory of 2020	1496	PO.NO.062.jpg.exe	RegSvcs.exe
PID 1496 wrote to memory of 2020	1496	PO.NO.062.jpg.exe	RegSvcs.exe
PID 1496 wrote to memory of 2020	1496	PO.NO.062.jpg.exe	RegSvcs.exe
PID 1496 wrote to memory of 2020	1496	PO.NO.062.jpg.exe	RegSvcs.exe
PID 1496 wrote to memory of 2020	1496	PO.NO.062.jpg.exe	RegSvcs.exe
PID 1496 wrote to memory of 2020	1496	PO.NO.062.jpg.exe	RegSvcs.exe
PID 1496 wrote to memory of 2020	1496	PO.NO.062.jpg.exe	RegSvcs.exe
PID 1496 wrote to memory of 2020	1496	PO.NO.062.jpg.exe	RegSvcs.exe
PID 1496 wrote to memory of 2020	1496	PO.NO.062.jpg.exe	RegSvcs.exe
PID 1496 wrote to memory of 2020	1496	PO.NO.062.jpg.exe	RegSvcs.exe
PID 1496 wrote to memory of 2020	1496	PO.NO.062.jpg.exe	RegSvcs.exe
PID 2020 wrote to memory of 1816	2020	RegSvcs.exe	REG.exe
PID 2020 wrote to memory of 1816	2020	RegSvcs.exe	REG.exe
PID 2020 wrote to memory of 1816	2020	RegSvcs.exe	REG.exe
PID 2020 wrote to memory of 1816	2020	RegSvcs.exe	REG.exe

outlook_office_path 1 IoCs

Processes:

RegSvcs.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe

outlook_win_path 1 IoCs

Processes:

RegSvcs.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe

C:\Users\Admin\AppData\Local\Temp\PO.NO.062.jpg.exe
"C:\Users\Admin\AppData\Local\Temp\PO.NO.062.jpg.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1496

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\LFkPIyKKOVLJl" /XML "C:\Users\Admin\AppData\Local\Temp\tmp1E5.tmp"
2⤵
- Creates scheduled task(s)
PID:1308

C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
"{path}"
2⤵
- Drops file in Drivers directory
- Accesses Microsoft Outlook profiles
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
- outlook_office_path
- outlook_win_path
PID:2020

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:1816

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

Email Collection

1

T1114

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp1E5.tmp
Filesize
1KB

MD5
e6fb3445a9377c1fd887aca935e4e518

SHA1
2f5fef8242b20d6cc7a66448c2e7767712475841

SHA256
49f2a043a80970ee76b3ab37b6931f1818e0244f97e229998046ca5ae3b55bf6

SHA512
ac07c947e6e206ae962d389d9ca6b28c7e0fa41c6cff6f98887ac8993f137413cc319d5dc948a42ba9d9e83cbed26c67fb0d1f898cc27bcd738bbe79220ddc2c

Download Submit
memory/1308-58-0x0000000000000000-mapping.dmp

Download
memory/1496-55-0x00000000001F0000-0x0000000000200000-memory.dmp

Filesize
64KB

Download
memory/1496-56-0x00000000007B0000-0x0000000000804000-memory.dmp

Filesize
336KB

Download
memory/1496-57-0x0000000075711000-0x0000000075713000-memory.dmp

Filesize
8KB

Download
memory/1496-54-0x0000000000150000-0x00000000001C0000-memory.dmp

Filesize
448KB

Download
memory/1816-72-0x0000000000000000-mapping.dmp

Download
memory/2020-60-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2020-63-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2020-64-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2020-65-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2020-66-0x000000000044833E-mapping.dmp

Download
memory/2020-68-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2020-70-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2020-61-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads