agenttesla | b92feb510c36837038c44d8ab317c2ea5634013cfb07b3ae1ef715ee5f17df58

General

Target

SHIPPING DOCS _234372.PDF.exe
Size

385KB
MD5

a08a2bda9c51b2d5ca1e38435629cacc
SHA1

46107a6be4613e6c2d1f9e08af63de089417ea10
SHA256

6f4d9739f62d219787f6de178ab8f5fb29f317cac258c567d8d51cddea7aa4ac
SHA512

d3be87d66877a4cf71f2edccd0863c180630b979214c40170fa5585a878f5ea32efa2c10fbd7f6129362b672230978af32f9618cd71a69be3f087f3b56aaf411

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:
reports@microtechlab.in
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/1980-63-0x0000000000400000-0x0000000000452000-memory.dmp	family_agenttesla
behavioral1/memory/1980-64-0x0000000000400000-0x0000000000452000-memory.dmp	family_agenttesla
behavioral1/memory/1980-65-0x0000000000400000-0x0000000000452000-memory.dmp	family_agenttesla
behavioral1/memory/1980-66-0x000000000044CF5E-mapping.dmp	family_agenttesla
behavioral1/memory/1980-68-0x0000000000400000-0x0000000000452000-memory.dmp	family_agenttesla
behavioral1/memory/1980-70-0x0000000000400000-0x0000000000452000-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/1380-56-0x0000000004DC0000-0x0000000004E18000-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\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe
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

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:

SHIPPING DOCS _234372.PDF.exe

description pid process target process

PID 1380 set thread context of 1980 1380 SHIPPING DOCS _234372.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

940 schtasks.exe
Modifies registry key 1 TTPs 1 IoCs

Modify Registry
T1112

Processes:

REG.exe

pid process

1940 REG.exe
Suspicious behavior: EnumeratesProcesses 3 IoCs

Processes:

SHIPPING DOCS _234372.PDF.exeRegSvcs.exe

pid process

1380 SHIPPING DOCS _234372.PDF.exe
1980 RegSvcs.exe
1980 RegSvcs.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

SHIPPING DOCS _234372.PDF.exeRegSvcs.exe

description pid process

Token: SeDebugPrivilege 1380 SHIPPING DOCS _234372.PDF.exe
Token: SeDebugPrivilege 1980 RegSvcs.exe

description	pid	process	target process
PID 1380 set thread context of 1980	1380	SHIPPING DOCS _234372.PDF.exe	RegSvcs.exe

pid	process
940	schtasks.exe

pid	process
1940	REG.exe

pid	process
1380	SHIPPING DOCS _234372.PDF.exe
1980	RegSvcs.exe
1980	RegSvcs.exe

description	pid	process
Token: SeDebugPrivilege	1380	SHIPPING DOCS _234372.PDF.exe
Token: SeDebugPrivilege	1980	RegSvcs.exe

Suspicious use of WriteProcessMemory 24 IoCs

Processes:

SHIPPING DOCS _234372.PDF.exeRegSvcs.exe

description	pid	process	target process
PID 1380 wrote to memory of 940	1380	SHIPPING DOCS _234372.PDF.exe	schtasks.exe
PID 1380 wrote to memory of 940	1380	SHIPPING DOCS _234372.PDF.exe	schtasks.exe
PID 1380 wrote to memory of 940	1380	SHIPPING DOCS _234372.PDF.exe	schtasks.exe
PID 1380 wrote to memory of 940	1380	SHIPPING DOCS _234372.PDF.exe	schtasks.exe
PID 1380 wrote to memory of 1980	1380	SHIPPING DOCS _234372.PDF.exe	RegSvcs.exe
PID 1380 wrote to memory of 1980	1380	SHIPPING DOCS _234372.PDF.exe	RegSvcs.exe
PID 1380 wrote to memory of 1980	1380	SHIPPING DOCS _234372.PDF.exe	RegSvcs.exe
PID 1380 wrote to memory of 1980	1380	SHIPPING DOCS _234372.PDF.exe	RegSvcs.exe
PID 1380 wrote to memory of 1980	1380	SHIPPING DOCS _234372.PDF.exe	RegSvcs.exe
PID 1380 wrote to memory of 1980	1380	SHIPPING DOCS _234372.PDF.exe	RegSvcs.exe
PID 1380 wrote to memory of 1980	1380	SHIPPING DOCS _234372.PDF.exe	RegSvcs.exe
PID 1380 wrote to memory of 1980	1380	SHIPPING DOCS _234372.PDF.exe	RegSvcs.exe
PID 1380 wrote to memory of 1980	1380	SHIPPING DOCS _234372.PDF.exe	RegSvcs.exe
PID 1380 wrote to memory of 1980	1380	SHIPPING DOCS _234372.PDF.exe	RegSvcs.exe
PID 1380 wrote to memory of 1980	1380	SHIPPING DOCS _234372.PDF.exe	RegSvcs.exe
PID 1380 wrote to memory of 1980	1380	SHIPPING DOCS _234372.PDF.exe	RegSvcs.exe
PID 1980 wrote to memory of 1940	1980	RegSvcs.exe	REG.exe
PID 1980 wrote to memory of 1940	1980	RegSvcs.exe	REG.exe
PID 1980 wrote to memory of 1940	1980	RegSvcs.exe	REG.exe
PID 1980 wrote to memory of 1940	1980	RegSvcs.exe	REG.exe
PID 1980 wrote to memory of 1640	1980	RegSvcs.exe	netsh.exe
PID 1980 wrote to memory of 1640	1980	RegSvcs.exe	netsh.exe
PID 1980 wrote to memory of 1640	1980	RegSvcs.exe	netsh.exe
PID 1980 wrote to memory of 1640	1980	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\SHIPPING DOCS _234372.PDF.exe
"C:\Users\Admin\AppData\Local\Temp\SHIPPING DOCS _234372.PDF.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1380

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\uWSnfNAErz" /XML "C:\Users\Admin\AppData\Local\Temp\tmpD20F.tmp"
2⤵
- Creates scheduled task(s)
PID:940

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:1980

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:1940

C:\Windows\SysWOW64\netsh.exe
"netsh" wlan show profile
3⤵
PID:1640

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\tmpD20F.tmp
Filesize
1KB

MD5
70ac792e8ce9e31594e2a303a0608aa8

SHA1
7b61f60d51eb2b3e1bf7171f10345a0a9236e031

SHA256
15e85babd8c95b4559e42aef4259c3f936efd317b841644fa52674891e0765af

SHA512
329e3afd427af77ebe0e0ebf684ef4c21858584d12e68423d1d44d25be4c9ac3864e8b983e8639106f50a09316d4cfb43d11d8daf0eb1e7d7087ed3c58270f55

Download Submit
memory/940-58-0x0000000000000000-mapping.dmp

Download
memory/1380-54-0x00000000008B0000-0x0000000000916000-memory.dmp

Filesize
408KB

Download
memory/1380-55-0x00000000004B0000-0x00000000004B8000-memory.dmp

Filesize
32KB

Download
memory/1380-56-0x0000000004DC0000-0x0000000004E18000-memory.dmp

Filesize
352KB

Download
memory/1380-57-0x0000000075871000-0x0000000075873000-memory.dmp

Filesize
8KB

Download
memory/1640-73-0x0000000000000000-mapping.dmp

Download
memory/1940-72-0x0000000000000000-mapping.dmp

Download
memory/1980-63-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/1980-64-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/1980-65-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/1980-66-0x000000000044CF5E-mapping.dmp

Download
memory/1980-68-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/1980-70-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/1980-61-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/1980-60-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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