agenttesla | 582c09cb88106231b13574cb3bc848cea346558a985bd13d1ccd8031a5a2a0db

General

Target

qt8hpBzVEeH1O8B.exe
Size

477KB
MD5

f8c833483ed462c778e1ca98cc9b4e48
SHA1

881d60f55cd7dcba349080e50dcc3249a2acfadf
SHA256

dff01b9f8946ed3792fe4e32ae3f95834c892f16ca219dc99d78fd15064f82a2
SHA512

03f1635e7121c4b3f6d1fa4386cee1d15e9b1a3c51c93dff876bb7429d0fc4d6437bd1fcfc97b39a406900203f0664109d673f46b1b18741ea4d62a25697467a

Score

10^/10

agenttesla collection coreentity evasion keylogger rezer0 spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
mail.cpworldindia.com
Port:
587
Username:
[email protected]
Password:
bopo@2014

Signatures

AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
keylogger trojan stealer spyware agenttesla

CoreEntity .NET Packer 1 IoCs

A .NET packer called CoreEntity where it has embedded the payload as a BitMap object which is later decrypted.

coreentity

Processes:

resource	yara_rule
behavioral1/memory/1828-56-0x00000000006B0000-0x00000000006B8000-memory.dmp	coreentity

AgentTesla Payload 6 IoCs

Processes:

resource	yara_rule
behavioral1/memory/948-61-0x0000000000400000-0x0000000000452000-memory.dmp	family_agenttesla
behavioral1/memory/948-62-0x0000000000400000-0x0000000000452000-memory.dmp	family_agenttesla
behavioral1/memory/948-63-0x0000000000400000-0x0000000000452000-memory.dmp	family_agenttesla
behavioral1/memory/948-64-0x000000000044CEEE-mapping.dmp	family_agenttesla
behavioral1/memory/948-66-0x0000000000400000-0x0000000000452000-memory.dmp	family_agenttesla
behavioral1/memory/948-68-0x0000000000400000-0x0000000000452000-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/1828-57-0x0000000000A60000-0x0000000000ABA000-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-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe
Key opened	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe
Key opened	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

qt8hpBzVEeH1O8B.exe

description pid process target process

PID 1828 set thread context of 948 1828 qt8hpBzVEeH1O8B.exe RegSvcs.exe
Modifies registry key 1 TTPs 1 IoCs

Modify Registry
T1112

Processes:

REG.exe

pid process

1712 REG.exe
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

RegSvcs.exe

pid process

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

Processes:

RegSvcs.exe

description pid process

Token: SeDebugPrivilege 948 RegSvcs.exe

description	pid	process	target process
PID 1828 set thread context of 948	1828	qt8hpBzVEeH1O8B.exe	RegSvcs.exe

pid	process
1712	REG.exe

pid	process
948	RegSvcs.exe
948	RegSvcs.exe

description	pid	process
Token: SeDebugPrivilege	948	RegSvcs.exe

Suspicious use of WriteProcessMemory 20 IoCs

Processes:

qt8hpBzVEeH1O8B.exeRegSvcs.exe

description	pid	process	target process
PID 1828 wrote to memory of 948	1828	qt8hpBzVEeH1O8B.exe	RegSvcs.exe
PID 1828 wrote to memory of 948	1828	qt8hpBzVEeH1O8B.exe	RegSvcs.exe
PID 1828 wrote to memory of 948	1828	qt8hpBzVEeH1O8B.exe	RegSvcs.exe
PID 1828 wrote to memory of 948	1828	qt8hpBzVEeH1O8B.exe	RegSvcs.exe
PID 1828 wrote to memory of 948	1828	qt8hpBzVEeH1O8B.exe	RegSvcs.exe
PID 1828 wrote to memory of 948	1828	qt8hpBzVEeH1O8B.exe	RegSvcs.exe
PID 1828 wrote to memory of 948	1828	qt8hpBzVEeH1O8B.exe	RegSvcs.exe
PID 1828 wrote to memory of 948	1828	qt8hpBzVEeH1O8B.exe	RegSvcs.exe
PID 1828 wrote to memory of 948	1828	qt8hpBzVEeH1O8B.exe	RegSvcs.exe
PID 1828 wrote to memory of 948	1828	qt8hpBzVEeH1O8B.exe	RegSvcs.exe
PID 1828 wrote to memory of 948	1828	qt8hpBzVEeH1O8B.exe	RegSvcs.exe
PID 1828 wrote to memory of 948	1828	qt8hpBzVEeH1O8B.exe	RegSvcs.exe
PID 948 wrote to memory of 1712	948	RegSvcs.exe	REG.exe
PID 948 wrote to memory of 1712	948	RegSvcs.exe	REG.exe
PID 948 wrote to memory of 1712	948	RegSvcs.exe	REG.exe
PID 948 wrote to memory of 1712	948	RegSvcs.exe	REG.exe
PID 948 wrote to memory of 568	948	RegSvcs.exe	netsh.exe
PID 948 wrote to memory of 568	948	RegSvcs.exe	netsh.exe
PID 948 wrote to memory of 568	948	RegSvcs.exe	netsh.exe
PID 948 wrote to memory of 568	948	RegSvcs.exe	netsh.exe

outlook_office_path 1 IoCs

Processes:

RegSvcs.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\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-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe

C:\Users\Admin\AppData\Local\Temp\qt8hpBzVEeH1O8B.exe
"C:\Users\Admin\AppData\Local\Temp\qt8hpBzVEeH1O8B.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1828

C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
"{path}"
2⤵
- Drops file in Drivers directory
- Accesses Microsoft Outlook profiles
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
- outlook_office_path
- outlook_win_path
PID:948

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:1712

C:\Windows\SysWOW64\netsh.exe
"netsh" wlan show profile
3⤵
PID:568

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Lateral Movement

Collection

Email Collection

1

T1114

Exfiltration

Command and Control

Impact

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Downloads

memory/568-71-0x0000000000000000-mapping.dmp

Download
memory/948-64-0x000000000044CEEE-mapping.dmp

Download
memory/948-58-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/948-59-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/948-61-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/948-62-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/948-63-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/948-66-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/948-68-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/1712-70-0x0000000000000000-mapping.dmp

Download
memory/1828-56-0x00000000006B0000-0x00000000006B8000-memory.dmp

Filesize
32KB

Download
memory/1828-57-0x0000000000A60000-0x0000000000ABA000-memory.dmp

Filesize
360KB

Download
memory/1828-54-0x0000000001130000-0x00000000011AE000-memory.dmp

Filesize
504KB

Download
memory/1828-55-0x0000000076011000-0x0000000076013000-memory.dmp

Filesize
8KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads