agenttesla | 9fbbc6024e3052aa1c1dbbaa7dbf5ef4f6c9b489b06a6dbfeab2d32a28d4facd

General

Target

PURCHASE ORDER.exe
Size

527KB
MD5

6379567925c7097a49aa88e9b0981f95
SHA1

ffb42a0da0e7855ecc339abb944f79e3597e6bd2
SHA256

10b2155331d3b0c7934808e52084c3911f82ece51f39836e3ef0e8db39ee9904
SHA512

c0b45c606cadd64144a9a0b8722582a045c7d3a358769e896b6d9245cfe3ee92bc7daab5d4459f3815bc12fc0e57d3582686cbb3dc73777e33f25f9396163c4f

Score

10^/10

agenttesla snakebot collection coreentity keylogger rezer0 snakebot spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
mail.privateemail.com
Port:
587
Username:
billions@cairoways.me
Password:
Whyworry90#

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/784-56-0x00000000003A0000-0x00000000003A8000-memory.dmp	coreentity

SnakeBOT
SnakeBOT is a heavily obfuscated .NET downloader.
snakebot

AgentTesla Payload 6 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1684-64-0x0000000000400000-0x0000000000452000-memory.dmp	family_agenttesla
behavioral1/memory/1684-63-0x0000000000400000-0x0000000000452000-memory.dmp	family_agenttesla
behavioral1/memory/1684-65-0x0000000000400000-0x0000000000452000-memory.dmp	family_agenttesla
behavioral1/memory/1684-66-0x000000000044CA3E-mapping.dmp	family_agenttesla
behavioral1/memory/1684-70-0x0000000000400000-0x0000000000452000-memory.dmp	family_agenttesla
behavioral1/memory/1684-68-0x0000000000400000-0x0000000000452000-memory.dmp	family_agenttesla

Contains SnakeBOT related strings 1 IoCs

snakebot

Processes:

resource	yara_rule
behavioral1/memory/784-54-0x0000000000DC0000-0x0000000000E4E000-memory.dmp	snakebot_strings

ReZer0 packer 1 IoCs

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

rezer0

Processes:

resource	yara_rule
behavioral1/memory/784-57-0x0000000007200000-0x0000000007258000-memory.dmp	rezer0

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

Processes:

MSBuild.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	MSBuild.exe
Key opened	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	MSBuild.exe
Key opened	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	MSBuild.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

PURCHASE ORDER.exe

description pid process target process

PID 784 set thread context of 1684 784 PURCHASE ORDER.exe MSBuild.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

2044 schtasks.exe
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

MSBuild.exe

pid process

1684 MSBuild.exe
1684 MSBuild.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

PURCHASE ORDER.exeMSBuild.exe

description pid process

Token: SeDebugPrivilege 784 PURCHASE ORDER.exe
Token: SeDebugPrivilege 1684 MSBuild.exe
Suspicious use of SetWindowsHookEx 3 IoCs

Processes:

PURCHASE ORDER.exeMSBuild.exe

pid process

784 PURCHASE ORDER.exe
784 PURCHASE ORDER.exe
1684 MSBuild.exe

description	pid	process	target process
PID 784 set thread context of 1684	784	PURCHASE ORDER.exe	MSBuild.exe

pid	process
2044	schtasks.exe

pid	process
1684	MSBuild.exe
1684	MSBuild.exe

description	pid	process
Token: SeDebugPrivilege	784	PURCHASE ORDER.exe
Token: SeDebugPrivilege	1684	MSBuild.exe

pid	process
784	PURCHASE ORDER.exe
784	PURCHASE ORDER.exe
1684	MSBuild.exe

Suspicious use of WriteProcessMemory 17 IoCs

Processes:

PURCHASE ORDER.exeMSBuild.exe

description	pid	process	target process
PID 784 wrote to memory of 2044	784	PURCHASE ORDER.exe	schtasks.exe
PID 784 wrote to memory of 2044	784	PURCHASE ORDER.exe	schtasks.exe
PID 784 wrote to memory of 2044	784	PURCHASE ORDER.exe	schtasks.exe
PID 784 wrote to memory of 2044	784	PURCHASE ORDER.exe	schtasks.exe
PID 784 wrote to memory of 1684	784	PURCHASE ORDER.exe	MSBuild.exe
PID 784 wrote to memory of 1684	784	PURCHASE ORDER.exe	MSBuild.exe
PID 784 wrote to memory of 1684	784	PURCHASE ORDER.exe	MSBuild.exe
PID 784 wrote to memory of 1684	784	PURCHASE ORDER.exe	MSBuild.exe
PID 784 wrote to memory of 1684	784	PURCHASE ORDER.exe	MSBuild.exe
PID 784 wrote to memory of 1684	784	PURCHASE ORDER.exe	MSBuild.exe
PID 784 wrote to memory of 1684	784	PURCHASE ORDER.exe	MSBuild.exe
PID 784 wrote to memory of 1684	784	PURCHASE ORDER.exe	MSBuild.exe
PID 784 wrote to memory of 1684	784	PURCHASE ORDER.exe	MSBuild.exe
PID 1684 wrote to memory of 320	1684	MSBuild.exe	netsh.exe
PID 1684 wrote to memory of 320	1684	MSBuild.exe	netsh.exe
PID 1684 wrote to memory of 320	1684	MSBuild.exe	netsh.exe
PID 1684 wrote to memory of 320	1684	MSBuild.exe	netsh.exe

outlook_office_path 1 IoCs

Processes:

MSBuild.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	MSBuild.exe

outlook_win_path 1 IoCs

Processes:

MSBuild.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	MSBuild.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 use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:784

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\sxxFNU" /XML "C:\Users\Admin\AppData\Local\Temp\tmp2675.tmp"
2⤵
- Creates scheduled task(s)
PID:2044

C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
"{path}"
2⤵
- Accesses Microsoft Outlook profiles
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
- outlook_office_path
- outlook_win_path
PID:1684

C:\Windows\SysWOW64\netsh.exe
"netsh" wlan show profile
3⤵
PID:320

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

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\tmp2675.tmp
Filesize
1KB

MD5
3489f467591bcb552c3a04fb5b04c27d

SHA1
14a0e5a28dda2285e5b7bb4404ee78da35f1a3ad

SHA256
040b33693b85c8afd08b3eaf2deb830d85df72ca82876a0157efd3d055cf09b7

SHA512
121950914250faf149c809000b6a005b8748372377843e5c32c23824dfaa357a2134aac5f65d69a877518419a8e2b0f7cf36d76d700ec6b11b01d32a4af08600

Download Submit
memory/320-72-0x0000000000000000-mapping.dmp

Download
memory/784-54-0x0000000000DC0000-0x0000000000E4E000-memory.dmp

Filesize
568KB

Download
memory/784-55-0x0000000075701000-0x0000000075703000-memory.dmp

Filesize
8KB

Download
memory/784-56-0x00000000003A0000-0x00000000003A8000-memory.dmp

Filesize
32KB

Download
memory/784-57-0x0000000007200000-0x0000000007258000-memory.dmp

Filesize
352KB

Download
memory/1684-60-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/1684-61-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/1684-64-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/1684-63-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/1684-65-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/1684-66-0x000000000044CA3E-mapping.dmp

Download
memory/1684-70-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/1684-68-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/2044-58-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads