agenttesla | 7a84ade5bcef198d32f876ff301affb17f25b9718d5471639d3285226ae1a23e

General

Target

new order.exe
Size

444KB
MD5

9d9881934e837298eef34f31bd4fdac6
SHA1

1d8e4add2babcd745934a6924efc52a73edf74ee
SHA256

1e41a4bc1146c02cf7e2e5f2a040ad3835f4852b675bfef98eeaed0c16d8bee3
SHA512

d9e512b4b0765bc050218bed8efcc1c2d07313b3204d1a255cd96b5bf237666ad4f44d7cc41e3cb38b09f35e31cb420391567c27272f4c905d6a25b0785a5c78

Score

10^/10

agenttesla collection keylogger persistence spyware stealer suricata trojan

Malware Config

Extracted

Credentials

Protocol: smtp
Host:
mail.yitaipackaging.com
Port:
587
Username:
[email protected]
Password:
22799213

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
mail.yitaipackaging.com
Port:
587
Username:
[email protected]
Password:
22799213

Signatures

AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
keylogger trojan stealer spyware agenttesla
suricata: ET MALWARE AgentTesla Exfil Via SMTP
suricata: ET MALWARE AgentTesla Exfil Via SMTP
suricata

AgentTesla Payload 1 IoCs

Processes:

resource	yara_rule
behavioral2/memory/4604-136-0x0000000000400000-0x000000000044C000-memory.dmp	family_agenttesla

Drops file in Drivers directory 1 IoCs

Processes:

new order.exe

description ioc process

File opened for modification C:\Windows\system32\drivers\etc\hosts new order.exe

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

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

Processes:

new order.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\Control Panel\International\Geo\Nation	new 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

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

Processes:

new order.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	new order.exe
Key opened	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	new order.exe
Key opened	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	new order.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

new order.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\gKWBf = "C:\\Users\\Admin\\AppData\\Roaming\\gKWBf\\gKWBf.exe"	new order.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

new order.exe

description pid process target process

PID 2804 set thread context of 4604 2804 new order.exe new 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 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

2552 schtasks.exe
Modifies registry key 1 TTPs 1 IoCs

Modify Registry
T1112

Processes:

REG.exe

pid process

2120 REG.exe

description	pid	process	target process
PID 2804 set thread context of 4604	2804	new order.exe	new order.exe

pid	process
2552	schtasks.exe

pid	process
2120	REG.exe

Suspicious behavior: EnumeratesProcesses 9 IoCs

Processes:

new order.exenew order.exe

pid	process
2804	new order.exe
2804	new order.exe
2804	new order.exe
2804	new order.exe
2804	new order.exe
2804	new order.exe
2804	new order.exe
4604	new order.exe
4604	new order.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

new order.exenew order.exe

description pid process

Token: SeDebugPrivilege 2804 new order.exe
Token: SeDebugPrivilege 4604 new order.exe

description	pid	process
Token: SeDebugPrivilege	2804	new order.exe
Token: SeDebugPrivilege	4604	new order.exe

Suspicious use of WriteProcessMemory 14 IoCs

Processes:

new order.exenew order.exe

description	pid	process	target process
PID 2804 wrote to memory of 2552	2804	new order.exe	schtasks.exe
PID 2804 wrote to memory of 2552	2804	new order.exe	schtasks.exe
PID 2804 wrote to memory of 2552	2804	new order.exe	schtasks.exe
PID 2804 wrote to memory of 4604	2804	new order.exe	new order.exe
PID 2804 wrote to memory of 4604	2804	new order.exe	new order.exe
PID 2804 wrote to memory of 4604	2804	new order.exe	new order.exe
PID 2804 wrote to memory of 4604	2804	new order.exe	new order.exe
PID 2804 wrote to memory of 4604	2804	new order.exe	new order.exe
PID 2804 wrote to memory of 4604	2804	new order.exe	new order.exe
PID 2804 wrote to memory of 4604	2804	new order.exe	new order.exe
PID 2804 wrote to memory of 4604	2804	new order.exe	new order.exe
PID 4604 wrote to memory of 2120	4604	new order.exe	REG.exe
PID 4604 wrote to memory of 2120	4604	new order.exe	REG.exe
PID 4604 wrote to memory of 2120	4604	new order.exe	REG.exe

outlook_office_path 1 IoCs

Processes:

new order.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	new order.exe

outlook_win_path 1 IoCs

Processes:

new order.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	new order.exe

C:\Users\Admin\AppData\Local\Temp\new order.exe
"C:\Users\Admin\AppData\Local\Temp\new order.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2804

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\xbxCRaah" /XML "C:\Users\Admin\AppData\Local\Temp\tmp4EBC.tmp"
2⤵
- Creates scheduled task(s)
PID:2552

C:\Users\Admin\AppData\Local\Temp\new order.exe
"{path}"
2⤵
- Drops file in Drivers directory
- Accesses Microsoft Outlook profiles
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
- outlook_office_path
- outlook_win_path
PID:4604

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:2120

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

1

T1053

Persistence

Registry Run Keys / Startup Folder

Scheduled Task

Privilege Escalation

Scheduled Task

1

T1053

Defense Evasion

Modify Registry

2

T1112

Credential Access

Credentials in Files

3

T1081

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Data from Local System

Email Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\new order.exe.log

Filesize
412B

MD5
ad1c7f6525cfeb54c0487efd38b0e26c

SHA1
ed3da94723ac7e3828a9e93d68418bb810592f3b

SHA256
0a534a3d0fa82e6a427164c5f6e702cac7e4afc9967af9bc5ddba4f84ab33276

SHA512
48d625e6be5391d91d95c2850226fe39bb2411cb72139797699cfe126e6b066182e83950a8ea67e63b64a66b0d45f58d8bc97cab0363d55c2fd88c0d1d28009c

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp4EBC.tmp

Filesize
1KB

MD5
259bf89868bda1b551941f3ea78a8c7c

SHA1
9b430ece52cea3d8160a706dd1d029b4bf9ac3f2

SHA256
babc6606ae55c0205c5c4626a20988396dc0d8060121f6fdee2a5cc13a84c62b

SHA512
3eb7974f92f5392284808505419f403006a45822d001b1001e19276c62d888c7c1fff95ebbd9ae947baa42e0b1aae88cc27a87284bf9384451c56fa09c7c3c5e

Download Submit
memory/2120-141-0x0000000000000000-mapping.dmp

Download
memory/2552-133-0x0000000000000000-mapping.dmp

Download
memory/2804-131-0x0000000005600000-0x000000000569C000-memory.dmp

Filesize
624KB

Download
memory/2804-132-0x0000000005740000-0x00000000057D2000-memory.dmp

Filesize
584KB

Download
memory/2804-130-0x00000000008B0000-0x0000000000926000-memory.dmp

Filesize
472KB

Download
memory/4604-136-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/4604-138-0x00000000054D0000-0x0000000005A74000-memory.dmp

Filesize
5.6MB

Download
memory/4604-139-0x0000000005BC0000-0x0000000005C26000-memory.dmp

Filesize
408KB

Download
memory/4604-140-0x00000000060F0000-0x0000000006140000-memory.dmp

Filesize
320KB

Download
memory/4604-135-0x0000000000000000-mapping.dmp

Download
memory/4604-142-0x00000000063F0000-0x00000000063FA000-memory.dmp

Filesize
40KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads