agenttesla | 79092f23a261bfbeb3398707d48c1e5c230517d5258d3b82477450484a925577

General

Target

IMG_0009786R445TGUH.exe
Size

423KB
MD5

f6cec1316813848e64a78fe3d6d29386
SHA1

ee1422deba8ead728f95c22c2b0ccfb984c00c33
SHA256

2b9ac04e330dd1d57544561da42bd8826c516e16b1acb6e70aa07d38f8152cde
SHA512

174e73448b7a1d9002deb0957c33e5939601ba0c79038f33d00e16bf0548ffdbd0165754d52f8b830a517bc499c58e755d6926b902fc02225fbe63e488c208e0

Score

10^/10

agenttesla collection coreentity keylogger rezer0 spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
us2.smtp.mailhostbox.com
Port:
587
Username:
[email protected]
Password:
mkoify147@@@

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/1652-56-0x0000000000370000-0x0000000000378000-memory.dmp	coreentity

AgentTesla Payload 6 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1236-63-0x0000000000400000-0x0000000000452000-memory.dmp	family_agenttesla
behavioral1/memory/1236-64-0x0000000000400000-0x0000000000452000-memory.dmp	family_agenttesla
behavioral1/memory/1236-65-0x0000000000400000-0x0000000000452000-memory.dmp	family_agenttesla
behavioral1/memory/1236-66-0x000000000044C7FE-mapping.dmp	family_agenttesla
behavioral1/memory/1236-68-0x0000000000400000-0x0000000000452000-memory.dmp	family_agenttesla
behavioral1/memory/1236-70-0x0000000000400000-0x0000000000452000-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/1652-57-0x00000000007C0000-0x0000000000818000-memory.dmp	rezer0

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:

IMG_0009786R445TGUH.exe

description pid process target process

PID 1652 set thread context of 1236 1652 IMG_0009786R445TGUH.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

1304 schtasks.exe
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

RegSvcs.exe

pid process

1236 RegSvcs.exe
1236 RegSvcs.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

RegSvcs.exe

description pid process

Token: SeDebugPrivilege 1236 RegSvcs.exe

description	pid	process	target process
PID 1652 set thread context of 1236	1652	IMG_0009786R445TGUH.exe	RegSvcs.exe

pid	process
1304	schtasks.exe

pid	process
1236	RegSvcs.exe
1236	RegSvcs.exe

description	pid	process
Token: SeDebugPrivilege	1236	RegSvcs.exe

Suspicious use of WriteProcessMemory 20 IoCs

Processes:

IMG_0009786R445TGUH.exeRegSvcs.exe

description	pid	process	target process
PID 1652 wrote to memory of 1304	1652	IMG_0009786R445TGUH.exe	schtasks.exe
PID 1652 wrote to memory of 1304	1652	IMG_0009786R445TGUH.exe	schtasks.exe
PID 1652 wrote to memory of 1304	1652	IMG_0009786R445TGUH.exe	schtasks.exe
PID 1652 wrote to memory of 1304	1652	IMG_0009786R445TGUH.exe	schtasks.exe
PID 1652 wrote to memory of 1236	1652	IMG_0009786R445TGUH.exe	RegSvcs.exe
PID 1652 wrote to memory of 1236	1652	IMG_0009786R445TGUH.exe	RegSvcs.exe
PID 1652 wrote to memory of 1236	1652	IMG_0009786R445TGUH.exe	RegSvcs.exe
PID 1652 wrote to memory of 1236	1652	IMG_0009786R445TGUH.exe	RegSvcs.exe
PID 1652 wrote to memory of 1236	1652	IMG_0009786R445TGUH.exe	RegSvcs.exe
PID 1652 wrote to memory of 1236	1652	IMG_0009786R445TGUH.exe	RegSvcs.exe
PID 1652 wrote to memory of 1236	1652	IMG_0009786R445TGUH.exe	RegSvcs.exe
PID 1652 wrote to memory of 1236	1652	IMG_0009786R445TGUH.exe	RegSvcs.exe
PID 1652 wrote to memory of 1236	1652	IMG_0009786R445TGUH.exe	RegSvcs.exe
PID 1652 wrote to memory of 1236	1652	IMG_0009786R445TGUH.exe	RegSvcs.exe
PID 1652 wrote to memory of 1236	1652	IMG_0009786R445TGUH.exe	RegSvcs.exe
PID 1652 wrote to memory of 1236	1652	IMG_0009786R445TGUH.exe	RegSvcs.exe
PID 1236 wrote to memory of 524	1236	RegSvcs.exe	netsh.exe
PID 1236 wrote to memory of 524	1236	RegSvcs.exe	netsh.exe
PID 1236 wrote to memory of 524	1236	RegSvcs.exe	netsh.exe
PID 1236 wrote to memory of 524	1236	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\IMG_0009786R445TGUH.exe
"C:\Users\Admin\AppData\Local\Temp\IMG_0009786R445TGUH.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1652
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\hfYZuV" /XML "C:\Users\Admin\AppData\Local\Temp\tmp2A1D.tmp"
  2⤵
  - Creates scheduled task(s)
  PID:1304
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
  "{path}"
  2⤵
  - Accesses Microsoft Outlook profiles
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  - outlook_office_path
  - outlook_win_path
  PID:1236
- - C:\Windows\SysWOW64\netsh.exe
    "netsh" wlan show profile
    3⤵
    PID:524

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

1

T1053

Persistence

Scheduled Task

1

T1053

Privilege Escalation

Scheduled Task

1

T1053

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Email Collection

1

T1114

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp2A1D.tmp

Filesize
1KB

MD5
f0ffb06eb635efecc2f8bdb980d92d4b

SHA1
050b3ad5e61f8857b9f5defe4ac8f5cb51bdc933

SHA256
9f4bf9f2f9e0731b6ef7ed92a0f0b53a8c6e31d059a9c73553332fcfe6c91358

SHA512
8e9c3586927bbe000225b6a158b45a93449dacb8bbe07a69fe1e661887dd1a191afa8824ae332951497828a85b78aca66ab9c4e83d20328dc792a26da8a104a8

Download Submit
memory/524-72-0x0000000000000000-mapping.dmp

Download
memory/1236-64-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/1236-61-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/1236-60-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/1236-63-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/1236-65-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/1236-66-0x000000000044C7FE-mapping.dmp

Download
memory/1236-68-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/1236-70-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/1304-58-0x0000000000000000-mapping.dmp

Download
memory/1652-57-0x00000000007C0000-0x0000000000818000-memory.dmp

Filesize
352KB

Download
memory/1652-56-0x0000000000370000-0x0000000000378000-memory.dmp

Filesize
32KB

Download
memory/1652-54-0x00000000011C0000-0x0000000001230000-memory.dmp

Filesize
448KB

Download
memory/1652-55-0x0000000076461000-0x0000000076463000-memory.dmp

Filesize
8KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads