agenttesla | 9d9d7ca207a922cb738b05ba28e8cc471d81e826d54dd0e35b74e1a826379f69

General

Target

Contract form C2.exe
Size

1.1MB
MD5

61cd9cf4bdb92c7b87610c6ca3bbb9f2
SHA1

98eb1b85c2f5a4df9d964089b7ef73e11ab299cb
SHA256

5e5d665f261aacccd45ce0cdeb9c09190918eca48adf692919446bf5a2b8b2ba
SHA512

f197d5cf146577569657b919c259ebcbf5779e4e7946101a720cd7929833b17b472008b175ddd553fc6f302c3d5f268a31ee1fc0669f5dbf127cb10ab345093f

Score

10^/10

agenttesla collection evasion keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
mapi.diplemailsrvr.com
Port:
587
Username:
[email protected]
Password:
Banachi@1974

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/3092-133-0x0000000000400000-0x0000000000450000-memory.dmp	family_agenttesla

Disables RegEdit via registry modification
evasion
Disables Task Manager via registry modification
evasion

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

Processes:

InstallUtil.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	InstallUtil.exe
Key opened	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	InstallUtil.exe
Key opened	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	InstallUtil.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

Contract form C2.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\YSNjC = "C:\\FSHLRPTB\\YSNjCU\\rCWFOTwkK.vbs"	Contract form C2.exe

Maps connected drives based on registry 3 TTPs 2 IoCs

Disk information is often read in order to detect sandboxing environments.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

Processes:

Contract form C2.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	Contract form C2.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\disk\Enum\0	Contract form C2.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

Contract form C2.exe

description pid process target process

PID 5020 set thread context of 3092 5020 Contract form C2.exe InstallUtil.exe
Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

4504 3092 WerFault.exe InstallUtil.exe
Modifies registry key 1 TTPs 1 IoCs

Modify Registry
T1112

Processes:

REG.exe

pid process

3136 REG.exe
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

InstallUtil.exe

pid process

3092 InstallUtil.exe
3092 InstallUtil.exe
Suspicious behavior: MapViewOfSection 1 IoCs

Processes:

Contract form C2.exe

pid process

5020 Contract form C2.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

InstallUtil.exe

description pid process

Token: SeDebugPrivilege 3092 InstallUtil.exe

description	pid	process	target process
PID 5020 set thread context of 3092	5020	Contract form C2.exe	InstallUtil.exe

pid	pid_target	process	target process
4504	3092	WerFault.exe	InstallUtil.exe

pid	process
3136	REG.exe

pid	process
3092	InstallUtil.exe
3092	InstallUtil.exe

pid	process
5020	Contract form C2.exe

description	pid	process
Token: SeDebugPrivilege	3092	InstallUtil.exe

Suspicious use of WriteProcessMemory 10 IoCs

Processes:

Contract form C2.exeInstallUtil.exe

description	pid	process	target process
PID 5020 wrote to memory of 3092	5020	Contract form C2.exe	InstallUtil.exe
PID 5020 wrote to memory of 3092	5020	Contract form C2.exe	InstallUtil.exe
PID 5020 wrote to memory of 3092	5020	Contract form C2.exe	InstallUtil.exe
PID 5020 wrote to memory of 3092	5020	Contract form C2.exe	InstallUtil.exe
PID 3092 wrote to memory of 3136	3092	InstallUtil.exe	REG.exe
PID 3092 wrote to memory of 3136	3092	InstallUtil.exe	REG.exe
PID 3092 wrote to memory of 3136	3092	InstallUtil.exe	REG.exe
PID 3092 wrote to memory of 1292	3092	InstallUtil.exe	netsh.exe
PID 3092 wrote to memory of 1292	3092	InstallUtil.exe	netsh.exe
PID 3092 wrote to memory of 1292	3092	InstallUtil.exe	netsh.exe

outlook_office_path 1 IoCs

Processes:

InstallUtil.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	InstallUtil.exe

outlook_win_path 1 IoCs

Processes:

InstallUtil.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	InstallUtil.exe

C:\Users\Admin\AppData\Local\Temp\Contract form C2.exe
"C:\Users\Admin\AppData\Local\Temp\Contract form C2.exe"
1⤵
- Adds Run key to start application
- Maps connected drives based on registry
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:5020

C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe
"C:\Windows\\\\Microsoft.NET\\\\Framework\\\\v4.0.30319\\\\InstallUtil.exe"
2⤵
- Accesses Microsoft Outlook profiles
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
- outlook_office_path
- outlook_win_path
PID:3092

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:3136

C:\Windows\SysWOW64\netsh.exe
"netsh" wlan show profile
3⤵
PID:1292

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 3092 -s 1596
3⤵
- Program crash
PID:4504

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 3092 -ip 3092
1⤵
PID:1980

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

2

T1112

Credential Access

Discovery

Query Registry

1

T1012

Peripheral Device Discovery

1

T1120

System Information Discovery

1

T1082

Lateral Movement

Collection

Email Collection

1

T1114

Exfiltration

Command and Control

Impact

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Downloads

memory/1292-140-0x0000000000000000-mapping.dmp

Download
memory/3092-132-0x0000000000000000-mapping.dmp

Download
memory/3092-133-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/3092-135-0x00000000055A0000-0x0000000005632000-memory.dmp

Filesize
584KB

Download
memory/3092-136-0x0000000005740000-0x00000000057DC000-memory.dmp

Filesize
624KB

Download
memory/3092-137-0x0000000005C60000-0x0000000005CC6000-memory.dmp

Filesize
408KB

Download
memory/3092-139-0x00000000067B0000-0x0000000006800000-memory.dmp

Filesize
320KB

Download
memory/3136-138-0x0000000000000000-mapping.dmp

Download
memory/5020-130-0x0000000000440000-0x0000000000564000-memory.dmp

Filesize
1.1MB

Download
memory/5020-131-0x0000000005810000-0x0000000005DB4000-memory.dmp

Filesize
5.6MB

Download
memory/5020-134-0x0000000002A20000-0x0000000002A23000-memory.dmp

Filesize
12KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads