agenttesla | c6eb2e79f00763ce42b8c4904bfd83869bcc09259ec4fbcbb194730be0f6206c

General

Target

Remittance advice_63653.exe
Size

455KB
MD5

2879721f8b9759ef832a173a4aef7f74
SHA1

e44ce3d55b58edd0fbdb51b78a2db0ca1da35d32
SHA256

24be3b1c3a8a56f3028bb533082f4e8e93f1405b7066e4facde544c22010afa5
SHA512

50014f4ab829d1e5379952ac2a19c46abfd0e73585231a6d6e0078db2218ff92149cc1b1d547eef7295ed3c48ff0866586509d5a2258b3bc2dd3bf1ccabe6625

Score

10^/10

agenttesla collection evasion keylogger persistence rezer0 spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
mail.microtechlab.in
Port:
587
Username:
[email protected]
Password:
pune@123

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/1756-63-0x0000000000400000-0x0000000000452000-memory.dmp	family_agenttesla
behavioral1/memory/1756-64-0x0000000000400000-0x0000000000452000-memory.dmp	family_agenttesla
behavioral1/memory/1756-65-0x0000000000400000-0x0000000000452000-memory.dmp	family_agenttesla
behavioral1/memory/1756-66-0x000000000044CF5E-mapping.dmp	family_agenttesla
behavioral1/memory/1756-68-0x0000000000400000-0x0000000000452000-memory.dmp	family_agenttesla
behavioral1/memory/1756-70-0x0000000000400000-0x0000000000452000-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/1000-56-0x0000000004FD0000-0x0000000005028000-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-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe
Key opened	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe
Key opened	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\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-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Windows\CurrentVersion\Run\CpSnJ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\CpSnJ\\CpSnJ.exe"	RegSvcs.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

Remittance advice_63653.exe

description pid process target process

PID 1000 set thread context of 1756 1000 Remittance advice_63653.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

1140 schtasks.exe
Modifies registry key 1 TTPs 1 IoCs

Modify Registry
T1112

Processes:

REG.exe

pid process

308 REG.exe
Suspicious behavior: EnumeratesProcesses 3 IoCs

Processes:

Remittance advice_63653.exeRegSvcs.exe

pid process

1000 Remittance advice_63653.exe
1756 RegSvcs.exe
1756 RegSvcs.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

Remittance advice_63653.exeRegSvcs.exe

description pid process

Token: SeDebugPrivilege 1000 Remittance advice_63653.exe
Token: SeDebugPrivilege 1756 RegSvcs.exe

description	pid	process	target process
PID 1000 set thread context of 1756	1000	Remittance advice_63653.exe	RegSvcs.exe

pid	process
1140	schtasks.exe

pid	process
308	REG.exe

pid	process
1000	Remittance advice_63653.exe
1756	RegSvcs.exe
1756	RegSvcs.exe

description	pid	process
Token: SeDebugPrivilege	1000	Remittance advice_63653.exe
Token: SeDebugPrivilege	1756	RegSvcs.exe

Suspicious use of WriteProcessMemory 24 IoCs

Processes:

Remittance advice_63653.exeRegSvcs.exe

description	pid	process	target process
PID 1000 wrote to memory of 1140	1000	Remittance advice_63653.exe	schtasks.exe
PID 1000 wrote to memory of 1140	1000	Remittance advice_63653.exe	schtasks.exe
PID 1000 wrote to memory of 1140	1000	Remittance advice_63653.exe	schtasks.exe
PID 1000 wrote to memory of 1140	1000	Remittance advice_63653.exe	schtasks.exe
PID 1000 wrote to memory of 1756	1000	Remittance advice_63653.exe	RegSvcs.exe
PID 1000 wrote to memory of 1756	1000	Remittance advice_63653.exe	RegSvcs.exe
PID 1000 wrote to memory of 1756	1000	Remittance advice_63653.exe	RegSvcs.exe
PID 1000 wrote to memory of 1756	1000	Remittance advice_63653.exe	RegSvcs.exe
PID 1000 wrote to memory of 1756	1000	Remittance advice_63653.exe	RegSvcs.exe
PID 1000 wrote to memory of 1756	1000	Remittance advice_63653.exe	RegSvcs.exe
PID 1000 wrote to memory of 1756	1000	Remittance advice_63653.exe	RegSvcs.exe
PID 1000 wrote to memory of 1756	1000	Remittance advice_63653.exe	RegSvcs.exe
PID 1000 wrote to memory of 1756	1000	Remittance advice_63653.exe	RegSvcs.exe
PID 1000 wrote to memory of 1756	1000	Remittance advice_63653.exe	RegSvcs.exe
PID 1000 wrote to memory of 1756	1000	Remittance advice_63653.exe	RegSvcs.exe
PID 1000 wrote to memory of 1756	1000	Remittance advice_63653.exe	RegSvcs.exe
PID 1756 wrote to memory of 308	1756	RegSvcs.exe	REG.exe
PID 1756 wrote to memory of 308	1756	RegSvcs.exe	REG.exe
PID 1756 wrote to memory of 308	1756	RegSvcs.exe	REG.exe
PID 1756 wrote to memory of 308	1756	RegSvcs.exe	REG.exe
PID 1756 wrote to memory of 2036	1756	RegSvcs.exe	netsh.exe
PID 1756 wrote to memory of 2036	1756	RegSvcs.exe	netsh.exe
PID 1756 wrote to memory of 2036	1756	RegSvcs.exe	netsh.exe
PID 1756 wrote to memory of 2036	1756	RegSvcs.exe	netsh.exe

outlook_office_path 1 IoCs

Processes:

RegSvcs.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\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-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe

C:\Users\Admin\AppData\Local\Temp\Remittance advice_63653.exe
"C:\Users\Admin\AppData\Local\Temp\Remittance advice_63653.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1000

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\TixoXNZlqyKY" /XML "C:\Users\Admin\AppData\Local\Temp\tmp209C.tmp"
2⤵
- Creates scheduled task(s)
PID:1140

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:1756

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:308

C:\Windows\SysWOW64\netsh.exe
"netsh" wlan show profile
3⤵
PID:2036

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\tmp209C.tmp
Filesize
1KB

MD5
bfcf17521f525dea23e771c2305d2446

SHA1
312df23a3aae545deb0c43deded94319ad05fc38

SHA256
de1f9ce551479eccdbd44cdd59e64a55a1816cbd8ec4d07d6319a6e50c436036

SHA512
169cef033b468c4600064276d099e3761542ac7616e5088f7ced14b768f4c4b06eaffac88b24624223318bd3c3611fd9d1f9c6b469f716408fe7f36cef73802a

Download Submit
memory/308-72-0x0000000000000000-mapping.dmp

Download
memory/1000-54-0x00000000000B0000-0x0000000000128000-memory.dmp

Filesize
480KB

Download
memory/1000-55-0x00000000003F0000-0x0000000000406000-memory.dmp

Filesize
88KB

Download
memory/1000-56-0x0000000004FD0000-0x0000000005028000-memory.dmp

Filesize
352KB

Download
memory/1000-57-0x0000000075F21000-0x0000000075F23000-memory.dmp

Filesize
8KB

Download
memory/1140-58-0x0000000000000000-mapping.dmp

Download
memory/1756-63-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/1756-61-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/1756-64-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/1756-65-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/1756-66-0x000000000044CF5E-mapping.dmp

Download
memory/1756-68-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/1756-70-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/1756-60-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/2036-73-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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