agenttesla | 9888c457740377c7aaa34b743985c151226fab832c3dabddf9a5c43352eff34c

General

Target

Ralson payment slip.pdf.exe
Size

550KB
MD5

cb6edb483fbed56eeb55c8cdf8729d6a
SHA1

ef5b5ad700ae044299f46f480817515f12093a8b
SHA256

7582634a83ef1c1bf123347b22852b93f134b6b97f10aaffa2aebd5df7b920e9
SHA512

f6bd7ee2f9194e9f73caa1585b9c17711906f3249e9c9bd91ebdc8991ff82587f04012d73c47a72df841e6a0429eb0c47b0a0a8d3524c64de83817164b3eff97

Score

10^/10

agenttesla collection evasion keylogger persistence rezer0 spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
mail.pro-powersourcing.com
Port:
587
Username:
[email protected]
Password:
china1977

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/1836-63-0x0000000000400000-0x0000000000452000-memory.dmp	family_agenttesla
behavioral1/memory/1836-64-0x0000000000400000-0x0000000000452000-memory.dmp	family_agenttesla
behavioral1/memory/1836-65-0x0000000000400000-0x0000000000452000-memory.dmp	family_agenttesla
behavioral1/memory/1836-66-0x000000000044CE0E-mapping.dmp	family_agenttesla
behavioral1/memory/1836-68-0x0000000000400000-0x0000000000452000-memory.dmp	family_agenttesla
behavioral1/memory/1836-70-0x0000000000400000-0x0000000000452000-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/1564-57-0x00000000009A0000-0x00000000009F8000-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

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

Processes:

RegSvcs.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe
Key opened	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe
Key opened	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\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-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Windows\CurrentVersion\Run\CpSnJ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\CpSnJ\\CpSnJ.exe"	RegSvcs.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

Ralson payment slip.pdf.exe

description pid process target process

PID 1564 set thread context of 1836 1564 Ralson payment slip.pdf.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

1156 schtasks.exe
Modifies registry key 1 TTPs 1 IoCs

Modify Registry
T1112

Processes:

REG.exe

pid process

1556 REG.exe
Suspicious behavior: EnumeratesProcesses 5 IoCs

Processes:

Ralson payment slip.pdf.exeRegSvcs.exe

pid process

1564 Ralson payment slip.pdf.exe
1564 Ralson payment slip.pdf.exe
1564 Ralson payment slip.pdf.exe
1836 RegSvcs.exe
1836 RegSvcs.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

Ralson payment slip.pdf.exeRegSvcs.exe

description pid process

Token: SeDebugPrivilege 1564 Ralson payment slip.pdf.exe
Token: SeDebugPrivilege 1836 RegSvcs.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

RegSvcs.exe

pid process

1836 RegSvcs.exe

description	pid	process	target process
PID 1564 set thread context of 1836	1564	Ralson payment slip.pdf.exe	RegSvcs.exe

pid	process
1156	schtasks.exe

pid	process
1556	REG.exe

pid	process
1564	Ralson payment slip.pdf.exe
1564	Ralson payment slip.pdf.exe
1564	Ralson payment slip.pdf.exe
1836	RegSvcs.exe
1836	RegSvcs.exe

description	pid	process
Token: SeDebugPrivilege	1564	Ralson payment slip.pdf.exe
Token: SeDebugPrivilege	1836	RegSvcs.exe

pid	process
1836	RegSvcs.exe

Suspicious use of WriteProcessMemory 24 IoCs

Processes:

Ralson payment slip.pdf.exeRegSvcs.exe

description	pid	process	target process
PID 1564 wrote to memory of 1156	1564	Ralson payment slip.pdf.exe	schtasks.exe
PID 1564 wrote to memory of 1156	1564	Ralson payment slip.pdf.exe	schtasks.exe
PID 1564 wrote to memory of 1156	1564	Ralson payment slip.pdf.exe	schtasks.exe
PID 1564 wrote to memory of 1156	1564	Ralson payment slip.pdf.exe	schtasks.exe
PID 1564 wrote to memory of 1836	1564	Ralson payment slip.pdf.exe	RegSvcs.exe
PID 1564 wrote to memory of 1836	1564	Ralson payment slip.pdf.exe	RegSvcs.exe
PID 1564 wrote to memory of 1836	1564	Ralson payment slip.pdf.exe	RegSvcs.exe
PID 1564 wrote to memory of 1836	1564	Ralson payment slip.pdf.exe	RegSvcs.exe
PID 1564 wrote to memory of 1836	1564	Ralson payment slip.pdf.exe	RegSvcs.exe
PID 1564 wrote to memory of 1836	1564	Ralson payment slip.pdf.exe	RegSvcs.exe
PID 1564 wrote to memory of 1836	1564	Ralson payment slip.pdf.exe	RegSvcs.exe
PID 1564 wrote to memory of 1836	1564	Ralson payment slip.pdf.exe	RegSvcs.exe
PID 1564 wrote to memory of 1836	1564	Ralson payment slip.pdf.exe	RegSvcs.exe
PID 1564 wrote to memory of 1836	1564	Ralson payment slip.pdf.exe	RegSvcs.exe
PID 1564 wrote to memory of 1836	1564	Ralson payment slip.pdf.exe	RegSvcs.exe
PID 1564 wrote to memory of 1836	1564	Ralson payment slip.pdf.exe	RegSvcs.exe
PID 1836 wrote to memory of 1556	1836	RegSvcs.exe	REG.exe
PID 1836 wrote to memory of 1556	1836	RegSvcs.exe	REG.exe
PID 1836 wrote to memory of 1556	1836	RegSvcs.exe	REG.exe
PID 1836 wrote to memory of 1556	1836	RegSvcs.exe	REG.exe
PID 1836 wrote to memory of 692	1836	RegSvcs.exe	netsh.exe
PID 1836 wrote to memory of 692	1836	RegSvcs.exe	netsh.exe
PID 1836 wrote to memory of 692	1836	RegSvcs.exe	netsh.exe
PID 1836 wrote to memory of 692	1836	RegSvcs.exe	netsh.exe

outlook_office_path 1 IoCs

Processes:

RegSvcs.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\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-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe

C:\Users\Admin\AppData\Local\Temp\Ralson payment slip.pdf.exe
"C:\Users\Admin\AppData\Local\Temp\Ralson payment slip.pdf.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1564

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\DotflctLrd" /XML "C:\Users\Admin\AppData\Local\Temp\tmpE39C.tmp"
2⤵
- Creates scheduled task(s)
PID:1156

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 SetWindowsHookEx
- Suspicious use of WriteProcessMemory
- outlook_office_path
- outlook_win_path
PID:1836

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:1556

C:\Windows\SysWOW64\netsh.exe
"netsh" wlan show profile
3⤵
PID:692

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

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Email Collection

1

T1114

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmpE39C.tmp

Filesize
1KB

MD5
50f4ae678b20ff499a9b2940b9e7c37c

SHA1
e2f231423a289cac43d939cc3a94a4bd3f5e8f0f

SHA256
0ad1473e5219808c10ff077678b7d23177ad3fe0aa9e4f02d8d51c89413932a5

SHA512
619aad0d7e3b7bdc9879a6c651647ec390ec834ff0cc287b98f44fb5b1da7a558b3c9d6c17f825e8fcd7a9e63d802fd53c899b1878a568aa74cef9f9561e84ee

Download Submit
memory/692-73-0x0000000000000000-mapping.dmp

Download
memory/1156-58-0x0000000000000000-mapping.dmp

Download
memory/1556-72-0x0000000000000000-mapping.dmp

Download
memory/1564-54-0x0000000000810000-0x00000000008A4000-memory.dmp

Filesize
592KB

Download
memory/1564-55-0x0000000000370000-0x00000000003E2000-memory.dmp

Filesize
456KB

Download
memory/1564-56-0x0000000000510000-0x0000000000524000-memory.dmp

Filesize
80KB

Download
memory/1564-57-0x00000000009A0000-0x00000000009F8000-memory.dmp

Filesize
352KB

Download
memory/1836-63-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/1836-64-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/1836-65-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/1836-66-0x000000000044CE0E-mapping.dmp

Download
memory/1836-68-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/1836-70-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/1836-71-0x0000000075CD1000-0x0000000075CD3000-memory.dmp

Filesize
8KB

Download
memory/1836-61-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/1836-60-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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