agenttesla | daf79ca1365100618e6b5ab5267e3503245d3fa2b5c799faf5d3c4169c0e36e0

General

Target

Shipmment Details.doc.exe
Size

593KB
MD5

2cdfc23862dd7eaad438857cf157e927
SHA1

ddefd21c0fddc8b5d85bde29f9cebfc48a2b5ba4
SHA256

a18085ac71d9d467d624492a847de1e7b6f7d4439ac496acbc67e28977e60606
SHA512

0ccb890011e9b2d27a5035fd8a088e84b0ce6d74f3645a11f3aa39753c972f707d56f85c141f40a5be4b2273bc481e0cd1e6acb31cdb1151d5dfc9d135d31deb

Score

10^/10

agenttesla collection coreentity evasion keylogger rezer0 spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
mail.hotel71.com.bd
Port:
587
Username:
[email protected]
Password:
9+^va&phP1v9

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/1504-57-0x0000000000340000-0x0000000000348000-memory.dmp	coreentity

AgentTesla Payload 6 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2040-62-0x0000000000400000-0x0000000000450000-memory.dmp	family_agenttesla
behavioral1/memory/2040-63-0x0000000000400000-0x0000000000450000-memory.dmp	family_agenttesla
behavioral1/memory/2040-64-0x0000000000400000-0x0000000000450000-memory.dmp	family_agenttesla
behavioral1/memory/2040-65-0x000000000044AC5E-mapping.dmp	family_agenttesla
behavioral1/memory/2040-67-0x0000000000400000-0x0000000000450000-memory.dmp	family_agenttesla
behavioral1/memory/2040-69-0x0000000000400000-0x0000000000450000-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/1504-58-0x0000000004170000-0x00000000041C8000-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-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe
Key opened	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe
Key opened	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

Shipmment Details.doc.exe

description pid process target process

PID 1504 set thread context of 2040 1504 Shipmment Details.doc.exe RegSvcs.exe
Modifies registry key 1 TTPs 1 IoCs

Modify Registry
T1112

Processes:

REG.exe

pid process

1216 REG.exe
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

RegSvcs.exe

pid process

2040 RegSvcs.exe
2040 RegSvcs.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

RegSvcs.exe

description pid process

Token: SeDebugPrivilege 2040 RegSvcs.exe

description	pid	process	target process
PID 1504 set thread context of 2040	1504	Shipmment Details.doc.exe	RegSvcs.exe

pid	process
1216	REG.exe

pid	process
2040	RegSvcs.exe
2040	RegSvcs.exe

description	pid	process
Token: SeDebugPrivilege	2040	RegSvcs.exe

Suspicious use of WriteProcessMemory 20 IoCs

Processes:

Shipmment Details.doc.exeRegSvcs.exe

description	pid	process	target process
PID 1504 wrote to memory of 2040	1504	Shipmment Details.doc.exe	RegSvcs.exe
PID 1504 wrote to memory of 2040	1504	Shipmment Details.doc.exe	RegSvcs.exe
PID 1504 wrote to memory of 2040	1504	Shipmment Details.doc.exe	RegSvcs.exe
PID 1504 wrote to memory of 2040	1504	Shipmment Details.doc.exe	RegSvcs.exe
PID 1504 wrote to memory of 2040	1504	Shipmment Details.doc.exe	RegSvcs.exe
PID 1504 wrote to memory of 2040	1504	Shipmment Details.doc.exe	RegSvcs.exe
PID 1504 wrote to memory of 2040	1504	Shipmment Details.doc.exe	RegSvcs.exe
PID 1504 wrote to memory of 2040	1504	Shipmment Details.doc.exe	RegSvcs.exe
PID 1504 wrote to memory of 2040	1504	Shipmment Details.doc.exe	RegSvcs.exe
PID 1504 wrote to memory of 2040	1504	Shipmment Details.doc.exe	RegSvcs.exe
PID 1504 wrote to memory of 2040	1504	Shipmment Details.doc.exe	RegSvcs.exe
PID 1504 wrote to memory of 2040	1504	Shipmment Details.doc.exe	RegSvcs.exe
PID 2040 wrote to memory of 1216	2040	RegSvcs.exe	REG.exe
PID 2040 wrote to memory of 1216	2040	RegSvcs.exe	REG.exe
PID 2040 wrote to memory of 1216	2040	RegSvcs.exe	REG.exe
PID 2040 wrote to memory of 1216	2040	RegSvcs.exe	REG.exe
PID 2040 wrote to memory of 1152	2040	RegSvcs.exe	netsh.exe
PID 2040 wrote to memory of 1152	2040	RegSvcs.exe	netsh.exe
PID 2040 wrote to memory of 1152	2040	RegSvcs.exe	netsh.exe
PID 2040 wrote to memory of 1152	2040	RegSvcs.exe	netsh.exe

outlook_office_path 1 IoCs

Processes:

RegSvcs.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\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-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe

C:\Users\Admin\AppData\Local\Temp\Shipmment Details.doc.exe
"C:\Users\Admin\AppData\Local\Temp\Shipmment Details.doc.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1504
- 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:2040
- - 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:1216
- - C:\Windows\SysWOW64\netsh.exe
    "netsh" wlan show profile
    3⤵
    PID:1152

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Lateral Movement

Collection

Email Collection

1

T1114

Command and Control

Exfiltration

Impact

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Downloads

memory/1152-72-0x0000000000000000-mapping.dmp

Download
memory/1216-71-0x0000000000000000-mapping.dmp

Download
memory/1504-55-0x0000000000760000-0x00000000007BC000-memory.dmp

Filesize
368KB

Download
memory/1504-56-0x0000000076561000-0x0000000076563000-memory.dmp

Filesize
8KB

Download
memory/1504-57-0x0000000000340000-0x0000000000348000-memory.dmp

Filesize
32KB

Download
memory/1504-58-0x0000000004170000-0x00000000041C8000-memory.dmp

Filesize
352KB

Download
memory/1504-54-0x0000000000200000-0x000000000029A000-memory.dmp

Filesize
616KB

Download
memory/2040-60-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/2040-63-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/2040-64-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/2040-65-0x000000000044AC5E-mapping.dmp

Download
memory/2040-67-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/2040-69-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/2040-62-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/2040-59-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads