agenttesla | 5fa2d320a9309582f3b8d589a6b776b586bf9247af39c831a86b4d5a3ef0f51f

General

Target

dhl_address_form.exe
Size

700KB
MD5

2609ae8c66f7d758472da101042c3548
SHA1

c787a4d4d919399f7041839d21a620a2d51fd5c4
SHA256

e356d7e8758967daa9f5d129eef727202e2c48d2808355924cf247aebc1bd336
SHA512

0776dbf3a2b0de4e760b12ccd896ebdb25018ec5f8072b3e4c1ec5fbe8a3351ccae5a7c0beaa08feda571dff15c0690b7c132b95b523d6451ce7eb1a5d64d28f
SSDEEP

6144:kE/gzZZ0mSLAkBTsvgYoxBAosUXBQsnJ/vY3ZFbvC2BoaaVAcL7n:k3zZZ0mXWTsoYoxZsUXBQCo3XK3VAcX

Score

10^/10

agenttesla collection defense_evasion discovery keylogger spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
smtp.petroleumintegrated-ae.com
Port:
587
Username:
[email protected]
Password:
)dZfkI%9

Signatures

AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
keylogger trojan stealer spyware agenttesla

System Binary Proxy Execution: InstallUtil 1 TTPs 2 IoCs

Abuse InstallUtil to proxy execution of malicious code.

defense_evasion

InstallUtil

T1218.004

description	ioc	Process
File created	C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe	dhl_address_form.exe
Key opened	\Registry\Machine\Software\Microsoft\Windows NT\CurrentVersion\AppCompatFlags\Custom\InstallUtil.exe	dhl_address_form.exe

Executes dropped EXE 1 IoCs

pid	Process
3708	InstallUtil.exe

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
T1552.001
Reads user/profile data of web browsers 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001

Credentials from Web Browsers
T1555.003

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-945322488-2060912225-3527527000-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	InstallUtil.exe
Key opened	\REGISTRY\USER\S-1-5-21-945322488-2060912225-3527527000-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	InstallUtil.exe
Key opened	\REGISTRY\USER\S-1-5-21-945322488-2060912225-3527527000-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	InstallUtil.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2988 set thread context of 3708	2988	dhl_address_form.exe	89

System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	InstallUtil.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	dhl_address_form.exe

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
2988	dhl_address_form.exe
2988	dhl_address_form.exe
2988	dhl_address_form.exe
3708	InstallUtil.exe
3708	InstallUtil.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2988	dhl_address_form.exe
Token: SeDebugPrivilege	3708	InstallUtil.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3708	InstallUtil.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2988 wrote to memory of 3708	2988	dhl_address_form.exe	89
PID 2988 wrote to memory of 3708	2988	dhl_address_form.exe	89
PID 2988 wrote to memory of 3708	2988	dhl_address_form.exe	89
PID 2988 wrote to memory of 3708	2988	dhl_address_form.exe	89
PID 2988 wrote to memory of 3708	2988	dhl_address_form.exe	89
PID 2988 wrote to memory of 3708	2988	dhl_address_form.exe	89
PID 2988 wrote to memory of 3708	2988	dhl_address_form.exe	89
PID 2988 wrote to memory of 3708	2988	dhl_address_form.exe	89

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-945322488-2060912225-3527527000-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	InstallUtil.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-945322488-2060912225-3527527000-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	InstallUtil.exe

C:\Users\Admin\AppData\Local\Temp\dhl_address_form.exe
"C:\Users\Admin\AppData\Local\Temp\dhl_address_form.exe"
1⤵
- System Binary Proxy Execution: InstallUtil
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2988
- C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe
  "C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe"
  2⤵
  - Executes dropped EXE
  - Accesses Microsoft Outlook profiles
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - outlook_office_path
  - outlook_win_path
  PID:3708

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

System Binary Proxy Execution

1

T1218

InstallUtil

1

T1218.004

Credential Access

Credentials from Password Stores

1

T1555

Credentials from Web Browsers

1

T1555.003

Unsecured Credentials

2

T1552

Credentials In Files

2

T1552.001

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Data from Local System

Email Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe

Filesize
41KB

MD5
5d4073b2eb6d217c19f2b22f21bf8d57

SHA1
f0209900fbf08d004b886a0b3ba33ea2b0bf9da8

SHA256
ac1a3f21fcc88f9cee7bf51581eafba24cc76c924f0821deb2afdf1080ddf3d3

SHA512
9ac94880684933ba3407cdc135abc3047543436567af14cd9269c4adc5a6535db7b867d6de0d6238a21b94e69f9890dbb5739155871a624520623a7e56872159

Download Submit
memory/2988-11-0x0000000005DA0000-0x0000000005DAA000-memory.dmp

Filesize
40KB

Download
memory/2988-5-0x0000000074CB0000-0x0000000075460000-memory.dmp

Filesize
7.7MB

Download
memory/2988-18-0x0000000074CB0000-0x0000000075460000-memory.dmp

Filesize
7.7MB

Download
memory/2988-4-0x0000000005910000-0x00000000059A2000-memory.dmp

Filesize
584KB

Download
memory/2988-1-0x0000000000D80000-0x0000000000E36000-memory.dmp

Filesize
728KB

Download
memory/2988-6-0x0000000005D50000-0x0000000005D94000-memory.dmp

Filesize
272KB

Download
memory/2988-8-0x0000000074CB0000-0x0000000075460000-memory.dmp

Filesize
7.7MB

Download
memory/2988-9-0x0000000074CBE000-0x0000000074CBF000-memory.dmp

Filesize
4KB

Download
memory/2988-10-0x0000000074CB0000-0x0000000075460000-memory.dmp

Filesize
7.7MB

Download
memory/2988-0-0x0000000074CBE000-0x0000000074CBF000-memory.dmp

Filesize
4KB

Download
memory/2988-3-0x0000000003100000-0x000000000310A000-memory.dmp

Filesize
40KB

Download
memory/2988-2-0x0000000005DB0000-0x0000000006354000-memory.dmp

Filesize
5.6MB

Download
memory/3708-17-0x0000000074CB0000-0x0000000075460000-memory.dmp

Filesize
7.7MB

Download
memory/3708-13-0x0000000000400000-0x000000000044A000-memory.dmp

Filesize
296KB

Download
memory/3708-19-0x0000000074CB0000-0x0000000075460000-memory.dmp

Filesize
7.7MB

Download
memory/3708-20-0x00000000052A0000-0x000000000533C000-memory.dmp

Filesize
624KB

Download
memory/3708-21-0x0000000074CB0000-0x0000000075460000-memory.dmp

Filesize
7.7MB

Download
memory/3708-22-0x0000000005470000-0x0000000005488000-memory.dmp

Filesize
96KB

Download
memory/3708-23-0x0000000005F00000-0x0000000005F66000-memory.dmp

Filesize
408KB

Download
memory/3708-24-0x00000000065C0000-0x0000000006610000-memory.dmp

Filesize
320KB

Download
memory/3708-25-0x00000000065B0000-0x00000000065BA000-memory.dmp

Filesize
40KB

Download

Analysis

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