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 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 1 IoCs

Processes:

resource	yara_rule
behavioral2/memory/3664-138-0x0000000000400000-0x0000000000452000-memory.dmp	family_agenttesla

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

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:

Ralson payment slip.pdf.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\Control Panel\International\Geo\Nation	Ralson payment slip.pdf.exe

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

Processes:

RegSvcs.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe
Key opened	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe
Key opened	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\Software\Microsoft\Office\15.0\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-1-5-21-3751123196-3323558407-1869646069-1000\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 2824 set thread context of 3664 2824 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

3184 schtasks.exe
Modifies registry key 1 TTPs 1 IoCs

Modify Registry
T1112

Processes:

REG.exe

pid process

4024 REG.exe

description	pid	process	target process
PID 2824 set thread context of 3664	2824	Ralson payment slip.pdf.exe	RegSvcs.exe

pid	process
3184	schtasks.exe

pid	process
4024	REG.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

Processes:

Ralson payment slip.pdf.exeRegSvcs.exe

pid	process
2824	Ralson payment slip.pdf.exe
2824	Ralson payment slip.pdf.exe
2824	Ralson payment slip.pdf.exe
2824	Ralson payment slip.pdf.exe
3664	RegSvcs.exe
3664	RegSvcs.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

Ralson payment slip.pdf.exeRegSvcs.exe

description pid process

Token: SeDebugPrivilege 2824 Ralson payment slip.pdf.exe
Token: SeDebugPrivilege 3664 RegSvcs.exe

description	pid	process
Token: SeDebugPrivilege	2824	Ralson payment slip.pdf.exe
Token: SeDebugPrivilege	3664	RegSvcs.exe

Suspicious use of WriteProcessMemory 17 IoCs

Processes:

Ralson payment slip.pdf.exeRegSvcs.exe

description	pid	process	target process
PID 2824 wrote to memory of 3184	2824	Ralson payment slip.pdf.exe	schtasks.exe
PID 2824 wrote to memory of 3184	2824	Ralson payment slip.pdf.exe	schtasks.exe
PID 2824 wrote to memory of 3184	2824	Ralson payment slip.pdf.exe	schtasks.exe
PID 2824 wrote to memory of 3664	2824	Ralson payment slip.pdf.exe	RegSvcs.exe
PID 2824 wrote to memory of 3664	2824	Ralson payment slip.pdf.exe	RegSvcs.exe
PID 2824 wrote to memory of 3664	2824	Ralson payment slip.pdf.exe	RegSvcs.exe
PID 2824 wrote to memory of 3664	2824	Ralson payment slip.pdf.exe	RegSvcs.exe
PID 2824 wrote to memory of 3664	2824	Ralson payment slip.pdf.exe	RegSvcs.exe
PID 2824 wrote to memory of 3664	2824	Ralson payment slip.pdf.exe	RegSvcs.exe
PID 2824 wrote to memory of 3664	2824	Ralson payment slip.pdf.exe	RegSvcs.exe
PID 2824 wrote to memory of 3664	2824	Ralson payment slip.pdf.exe	RegSvcs.exe
PID 3664 wrote to memory of 4024	3664	RegSvcs.exe	REG.exe
PID 3664 wrote to memory of 4024	3664	RegSvcs.exe	REG.exe
PID 3664 wrote to memory of 4024	3664	RegSvcs.exe	REG.exe
PID 3664 wrote to memory of 672	3664	RegSvcs.exe	netsh.exe
PID 3664 wrote to memory of 672	3664	RegSvcs.exe	netsh.exe
PID 3664 wrote to memory of 672	3664	RegSvcs.exe	netsh.exe

outlook_office_path 1 IoCs

Processes:

RegSvcs.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\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-1-5-21-3751123196-3323558407-1869646069-1000\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⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2824

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\DotflctLrd" /XML "C:\Users\Admin\AppData\Local\Temp\tmpD88.tmp"
2⤵
- Creates scheduled task(s)
PID:3184

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:3664

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:4024

C:\Windows\SysWOW64\netsh.exe
"netsh" wlan show profile
3⤵
PID:672

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

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Email Collection

1

T1114

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmpD88.tmp

Filesize
1KB

MD5
4fa984b0052d98eaa6a547161ae9356d

SHA1
a0600252b8087dc452cff21d17c62ae529a72a99

SHA256
e5eac76ac569fa7868e23b014dd91ac2e2c4306c4df73c3af2dee8cdec653ff5

SHA512
eb6e79ffdd3541e474cca78dd594353d712195f42a5f8bbefa0803330bbdfbb4f9e424d0c924f3779b3a17d04ab3ce9155a8ba3ab512377360ff34be58870323

Download Submit
memory/672-141-0x0000000000000000-mapping.dmp

Download
memory/2824-133-0x0000000005B30000-0x0000000005B3A000-memory.dmp

Filesize
40KB

Download
memory/2824-130-0x0000000000DB0000-0x0000000000E44000-memory.dmp

Filesize
592KB

Download
memory/2824-134-0x0000000009700000-0x000000000979C000-memory.dmp

Filesize
624KB

Download
memory/2824-132-0x0000000005B50000-0x0000000005BE2000-memory.dmp

Filesize
584KB

Download
memory/2824-131-0x0000000006120000-0x00000000066C4000-memory.dmp

Filesize
5.6MB

Download
memory/3184-135-0x0000000000000000-mapping.dmp

Download
memory/3664-137-0x0000000000000000-mapping.dmp

Download
memory/3664-138-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/3664-139-0x00000000057C0000-0x0000000005826000-memory.dmp

Filesize
408KB

Download
memory/3664-142-0x0000000006700000-0x0000000006750000-memory.dmp

Filesize
320KB

Download
memory/4024-140-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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