agenttesla | 546b99166b206cd4a3db89b8e97579919a85e98d281632a2b6f5118f1bf5eaac

General

Target

Purchase Order.exe
Size

716KB
MD5

e5f74fba39a57d9e8f42b3073447b283
SHA1

429ab9b34e3cfadce00baf207f4a2a87666785de
SHA256

4282ae23bf6e1a962085b045a712056a9d98c1e03d9d77c6a226d3fc7ed89776
SHA512

f1754b72140111d0241720407d05e1e610ff08aad96289f2af51461d3ad1e7e0d4741ad7b28724e531a6195969a0105380b982d5509c52a98bb44ae85d95924e

Score

10^/10

agenttesla collection coreentity evasion keylogger rezer0 spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
mail.acmasindia.com
Port:
587
Username:
[email protected]
Password:
7R?_e#f.wLob

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/1496-56-0x0000000000600000-0x0000000000608000-memory.dmp	coreentity

AgentTesla Payload 6 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1588-78-0x0000000000400000-0x0000000000452000-memory.dmp	family_agenttesla
behavioral1/memory/1588-79-0x0000000000400000-0x0000000000452000-memory.dmp	family_agenttesla
behavioral1/memory/1588-80-0x0000000000400000-0x0000000000452000-memory.dmp	family_agenttesla
behavioral1/memory/1588-81-0x000000000044C61E-mapping.dmp	family_agenttesla
behavioral1/memory/1588-83-0x0000000000400000-0x0000000000452000-memory.dmp	family_agenttesla
behavioral1/memory/1588-85-0x0000000000400000-0x0000000000452000-memory.dmp	family_agenttesla

ReZer0 packer 2 IoCs

Detects ReZer0, a packer with multiple versions used in various campaigns.

rezer0

Processes:

resource	yara_rule
behavioral1/memory/1496-57-0x0000000005230000-0x00000000052C6000-memory.dmp	rezer0
behavioral1/memory/1272-72-0x00000000023A0000-0x00000000023F8000-memory.dmp	rezer0

Disables Task Manager via registry modification
evasion
Drops file in Drivers directory 1 IoCs

Processes:

Purchase Order.exe

description ioc process

File opened for modification C:\Windows\system32\drivers\etc\hosts Purchase Order.exe
Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081
Reads user/profile data of local email clients 2 TTPs
Email clients store some user data on disk where infostealers will often target it.
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081

description	ioc	process
File opened for modification	C:\Windows\system32\drivers\etc\hosts	Purchase Order.exe

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

Processes:

Purchase Order.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Purchase Order.exe
Key opened	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Purchase Order.exe
Key opened	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Purchase Order.exe

Suspicious use of SetThreadContext 2 IoCs

Processes:

Purchase Order.exePurchase Order.exe

description	pid	process	target process
PID 1496 set thread context of 1272	1496	Purchase Order.exe	Purchase Order.exe
PID 1272 set thread context of 1588	1272	Purchase Order.exe	Purchase Order.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 2 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
persistence

Scheduled Task
T1053

Processes:

schtasks.exeschtasks.exe

pid process

1328 schtasks.exe
1924 schtasks.exe
Modifies registry key 1 TTPs 1 IoCs

Modify Registry
T1112

Processes:

REG.exe

pid process

1544 REG.exe
Suspicious behavior: EnumeratesProcesses 6 IoCs

Processes:

Purchase Order.exePurchase Order.exePurchase Order.exe

pid process

1496 Purchase Order.exe
1496 Purchase Order.exe
1496 Purchase Order.exe
1272 Purchase Order.exe
1588 Purchase Order.exe
1588 Purchase Order.exe

pid	process
1328	schtasks.exe
1924	schtasks.exe

pid	process
1544	REG.exe

pid	process
1496	Purchase Order.exe
1496	Purchase Order.exe
1496	Purchase Order.exe
1272	Purchase Order.exe
1588	Purchase Order.exe
1588	Purchase Order.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

Purchase Order.exePurchase Order.exePurchase Order.exe

description	pid	process
Token: SeDebugPrivilege	1496	Purchase Order.exe
Token: SeDebugPrivilege	1272	Purchase Order.exe
Token: SeDebugPrivilege	1588	Purchase Order.exe

Suspicious use of WriteProcessMemory 34 IoCs

Processes:

Purchase Order.exePurchase Order.exePurchase Order.exe

description	pid	process	target process
PID 1496 wrote to memory of 1328	1496	Purchase Order.exe	schtasks.exe
PID 1496 wrote to memory of 1328	1496	Purchase Order.exe	schtasks.exe
PID 1496 wrote to memory of 1328	1496	Purchase Order.exe	schtasks.exe
PID 1496 wrote to memory of 1328	1496	Purchase Order.exe	schtasks.exe
PID 1496 wrote to memory of 1272	1496	Purchase Order.exe	Purchase Order.exe
PID 1496 wrote to memory of 1272	1496	Purchase Order.exe	Purchase Order.exe
PID 1496 wrote to memory of 1272	1496	Purchase Order.exe	Purchase Order.exe
PID 1496 wrote to memory of 1272	1496	Purchase Order.exe	Purchase Order.exe
PID 1496 wrote to memory of 1272	1496	Purchase Order.exe	Purchase Order.exe
PID 1496 wrote to memory of 1272	1496	Purchase Order.exe	Purchase Order.exe
PID 1496 wrote to memory of 1272	1496	Purchase Order.exe	Purchase Order.exe
PID 1496 wrote to memory of 1272	1496	Purchase Order.exe	Purchase Order.exe
PID 1496 wrote to memory of 1272	1496	Purchase Order.exe	Purchase Order.exe
PID 1272 wrote to memory of 1924	1272	Purchase Order.exe	schtasks.exe
PID 1272 wrote to memory of 1924	1272	Purchase Order.exe	schtasks.exe
PID 1272 wrote to memory of 1924	1272	Purchase Order.exe	schtasks.exe
PID 1272 wrote to memory of 1924	1272	Purchase Order.exe	schtasks.exe
PID 1272 wrote to memory of 1588	1272	Purchase Order.exe	Purchase Order.exe
PID 1272 wrote to memory of 1588	1272	Purchase Order.exe	Purchase Order.exe
PID 1272 wrote to memory of 1588	1272	Purchase Order.exe	Purchase Order.exe
PID 1272 wrote to memory of 1588	1272	Purchase Order.exe	Purchase Order.exe
PID 1272 wrote to memory of 1588	1272	Purchase Order.exe	Purchase Order.exe
PID 1272 wrote to memory of 1588	1272	Purchase Order.exe	Purchase Order.exe
PID 1272 wrote to memory of 1588	1272	Purchase Order.exe	Purchase Order.exe
PID 1272 wrote to memory of 1588	1272	Purchase Order.exe	Purchase Order.exe
PID 1272 wrote to memory of 1588	1272	Purchase Order.exe	Purchase Order.exe
PID 1588 wrote to memory of 1544	1588	Purchase Order.exe	REG.exe
PID 1588 wrote to memory of 1544	1588	Purchase Order.exe	REG.exe
PID 1588 wrote to memory of 1544	1588	Purchase Order.exe	REG.exe
PID 1588 wrote to memory of 1544	1588	Purchase Order.exe	REG.exe
PID 1588 wrote to memory of 1716	1588	Purchase Order.exe	netsh.exe
PID 1588 wrote to memory of 1716	1588	Purchase Order.exe	netsh.exe
PID 1588 wrote to memory of 1716	1588	Purchase Order.exe	netsh.exe
PID 1588 wrote to memory of 1716	1588	Purchase Order.exe	netsh.exe

outlook_office_path 1 IoCs

Processes:

Purchase Order.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Purchase Order.exe

outlook_win_path 1 IoCs

Processes:

Purchase Order.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Purchase Order.exe

C:\Users\Admin\AppData\Local\Temp\Purchase Order.exe
"C:\Users\Admin\AppData\Local\Temp\Purchase Order.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1496

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\bTbkBcUE" /XML "C:\Users\Admin\AppData\Local\Temp\tmp3BBA.tmp"
2⤵
- Creates scheduled task(s)
PID:1328

C:\Users\Admin\AppData\Local\Temp\Purchase Order.exe
"{path}"
2⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1272

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\izubZbilc" /XML "C:\Users\Admin\AppData\Local\Temp\tmp4471.tmp"
3⤵
- Creates scheduled task(s)
PID:1924

C:\Users\Admin\AppData\Local\Temp\Purchase Order.exe
"{path}"
3⤵
- 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:1588

C:\Windows\SysWOW64\REG.exe
REG add HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\System /v DisableTaskMgr /t REG_DWORD /d 1 /f
4⤵
- Modifies registry key
PID:1544

C:\Windows\SysWOW64\netsh.exe
"netsh" wlan show profile
4⤵
PID:1716

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scheduled Task

1

T1053

Persistence

Scheduled Task

1

T1053

Privilege Escalation

Scheduled Task

1

T1053

Defense Evasion

Modify Registry

1

T1112

Credential Access

Credentials in Files

3

T1081

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Data from Local System

3

T1005

Email Collection

1

T1114

Exfiltration

Command and Control

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\tmp3BBA.tmp
Filesize
1KB

MD5
a7e7f542a7eb22c19db21e0de0e23875

SHA1
3e44f912bce843f2523ec4413945e0cfa4a2cbcb

SHA256
d6c3bfbc505c498e80f6890f956d8867edc680432361d67ed2b33f5e158581fc

SHA512
6b4469a14c2b60ca812420b8ae4b182f828bdd6f35159998be6574c6d4222393280861e57342654c0233cfad4f447a59a7bf037d7be426dbed689a18687ec530

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp4471.tmp
Filesize
1KB

MD5
0be76a8ec7318008bb69eab8155c968b

SHA1
e4b59ec3434cabbc0a9d74094cac9fbd3f1d147a

SHA256
695acc91c9b83de93729052195f2f1d50ef3127c6901b7baf463576b05acb359

SHA512
461f2fd2d9346ddb597d78c2463f3f88fc987dd19f44ab464225af5dded5afd8864364fdc03f22a90acf6d4055b9768c8f12805dc7a9629dcf0677bb3ab4c208

Download Submit
memory/1272-68-0x0000000000400000-0x000000000048E000-memory.dmp

Filesize
568KB

Download
memory/1272-70-0x0000000000400000-0x000000000048E000-memory.dmp

Filesize
568KB

Download
memory/1272-72-0x00000000023A0000-0x00000000023F8000-memory.dmp

Filesize
352KB

Download
memory/1272-64-0x0000000000400000-0x000000000048E000-memory.dmp

Filesize
568KB

Download
memory/1272-60-0x0000000000400000-0x000000000048E000-memory.dmp

Filesize
568KB

Download
memory/1272-61-0x0000000000400000-0x000000000048E000-memory.dmp

Filesize
568KB

Download
memory/1272-63-0x0000000000400000-0x000000000048E000-memory.dmp

Filesize
568KB

Download
memory/1272-65-0x0000000000400000-0x000000000048E000-memory.dmp

Filesize
568KB

Download
memory/1272-66-0x0000000000489616-mapping.dmp

Download
memory/1328-58-0x0000000000000000-mapping.dmp

Download
memory/1496-55-0x0000000075711000-0x0000000075713000-memory.dmp

Filesize
8KB

Download
memory/1496-54-0x0000000000B00000-0x0000000000BBA000-memory.dmp

Filesize
744KB

Download
memory/1496-57-0x0000000005230000-0x00000000052C6000-memory.dmp

Filesize
600KB

Download
memory/1496-56-0x0000000000600000-0x0000000000608000-memory.dmp

Filesize
32KB

Download
memory/1544-87-0x0000000000000000-mapping.dmp

Download
memory/1588-78-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/1588-76-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/1588-75-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/1588-79-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/1588-80-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/1588-81-0x000000000044C61E-mapping.dmp

Download
memory/1588-83-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/1588-85-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/1716-88-0x0000000000000000-mapping.dmp

Download
memory/1924-73-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

Replay Monitor

Loading Replay Monitor...

Downloads