agenttesla | dc6ec612a3647aa1c29469710570837f1bab7e1e5e0f3fd0f6dd0a261c4c331a

General

Target

Purchase Order.exe
Size

1.2MB
MD5

25187e1348ce3471f3ac3b620edb3a63
SHA1

2193f4d5aa0a9e00dbbb8bdf2d40176adb5070c6
SHA256

dc6ec612a3647aa1c29469710570837f1bab7e1e5e0f3fd0f6dd0a261c4c331a
SHA512

7ee5f366b82bda3275fef09f254fab380c2cfef6c545fac5667b54b54d767f5a33c2bb0cf7a0ba6e2296a6d3381645511734f8bfa193edcaa21f8d0e23ef22b2

Score

10^/10

agenttesla collection keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
smtp.vivaldi.net
Port:
587
Username:
[email protected]
Password:
Password1000

Signatures

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

AgentTesla Payload 2 IoCs

Processes:

resource	yara_rule
behavioral2/memory/604-128-0x0000000000400000-0x000000000043C000-memory.dmp	family_agenttesla
behavioral2/memory/604-129-0x00000000004376CE-mapping.dmp	family_agenttesla

Drops file in Drivers directory 1 IoCs

Processes:

Purchase Order.exe

description ioc process

File opened for modification C:\Windows\system32\drivers\etc\hosts Purchase 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

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

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

Processes:

Purchase Order.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-2481030822-2828258191-1606198294-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Purchase Order.exe
Key opened	\REGISTRY\USER\S-1-5-21-2481030822-2828258191-1606198294-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Purchase Order.exe
Key opened	\REGISTRY\USER\S-1-5-21-2481030822-2828258191-1606198294-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Purchase Order.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

Purchase Order.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2481030822-2828258191-1606198294-1000\Software\Microsoft\Windows\CurrentVersion\Run\tKZVPq = "C:\\Users\\Admin\\AppData\\Roaming\\tKZVPq\\tKZVPq.exe"	Purchase Order.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

Purchase Order.exe

description pid process target process

PID 2180 set thread context of 604 2180 Purchase Order.exe Purchase 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

3092 schtasks.exe
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

Purchase Order.exe

pid process

604 Purchase Order.exe
604 Purchase Order.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

Purchase Order.exe

description pid process

Token: SeDebugPrivilege 604 Purchase Order.exe

description	pid	process	target process
PID 2180 set thread context of 604	2180	Purchase Order.exe	Purchase Order.exe

pid	process
3092	schtasks.exe

pid	process
604	Purchase Order.exe
604	Purchase Order.exe

description	pid	process
Token: SeDebugPrivilege	604	Purchase Order.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

Purchase Order.exe

description	pid	process	target process
PID 2180 wrote to memory of 3092	2180	Purchase Order.exe	schtasks.exe
PID 2180 wrote to memory of 3092	2180	Purchase Order.exe	schtasks.exe
PID 2180 wrote to memory of 3092	2180	Purchase Order.exe	schtasks.exe
PID 2180 wrote to memory of 604	2180	Purchase Order.exe	Purchase Order.exe
PID 2180 wrote to memory of 604	2180	Purchase Order.exe	Purchase Order.exe
PID 2180 wrote to memory of 604	2180	Purchase Order.exe	Purchase Order.exe
PID 2180 wrote to memory of 604	2180	Purchase Order.exe	Purchase Order.exe
PID 2180 wrote to memory of 604	2180	Purchase Order.exe	Purchase Order.exe
PID 2180 wrote to memory of 604	2180	Purchase Order.exe	Purchase Order.exe
PID 2180 wrote to memory of 604	2180	Purchase Order.exe	Purchase Order.exe
PID 2180 wrote to memory of 604	2180	Purchase Order.exe	Purchase Order.exe

outlook_office_path 1 IoCs

Processes:

Purchase Order.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-2481030822-2828258191-1606198294-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Purchase Order.exe

outlook_win_path 1 IoCs

Processes:

Purchase Order.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-2481030822-2828258191-1606198294-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Purchase Order.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 WriteProcessMemory
PID:2180
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\TYXWjGGnfmxrXp" /XML "C:\Users\Admin\AppData\Local\Temp\tmp1FF7.tmp"
  2⤵
  - Creates scheduled task(s)
  PID:3092
- C:\Users\Admin\AppData\Local\Temp\Purchase 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
  - outlook_office_path
  - outlook_win_path
  PID:604

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

1

T1112

Credential Access

Credentials in Files

3

T1081

Discovery

System Information Discovery

1

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\Purchase Order.exe.log

MD5
90acfd72f14a512712b1a7380c0faf60

SHA1
40ba4accb8faa75887e84fb8e38d598dc8cf0f12

SHA256
20806822f0c130b340504132c1461b589261fbbc518e468f4f90733ab514cb86

SHA512
29dbf85e14e60868574cb4dc9bda83d3c229fb956733d8d2557f2475ee0e690ac9c2e72f31e02284996da6906ba2dbfa382a29b04c15a2406571d8ee19ad16b9

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp1FF7.tmp

MD5
5faaf4eb77a46aa71dccfbfa6147c2ca

SHA1
0d803f261f85c973fc06f820522575a421e2f79f

SHA256
4c17f4408eaff3157a63365ecce40a65b899ca2cd9103d5dfc636829bb302e1f

SHA512
da7da02ef5e16c5be50898d114b25bc5752b05abc9b8f61021982da888a244be4d5e628a0db875380e774c6ed64da37cec4b8c28c41ab9227d59096d1b818955

Download Submit
memory/604-140-0x0000000001051000-0x0000000001052000-memory.dmp

Filesize
4KB

Download
memory/604-137-0x0000000005C70000-0x0000000005C71000-memory.dmp

Filesize
4KB

Download
memory/604-136-0x0000000005BE0000-0x0000000005BE1000-memory.dmp

Filesize
4KB

Download
memory/604-135-0x0000000001050000-0x0000000001051000-memory.dmp

Filesize
4KB

Download
memory/604-129-0x00000000004376CE-mapping.dmp

Download
memory/604-128-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download
memory/2180-120-0x00000000052D0000-0x00000000052D1000-memory.dmp

Filesize
4KB

Download
memory/2180-125-0x000000000E070000-0x000000000E0A8000-memory.dmp

Filesize
224KB

Download
memory/2180-124-0x000000000CEF0000-0x000000000CF70000-memory.dmp

Filesize
512KB

Download
memory/2180-123-0x0000000004C60000-0x0000000004C6E000-memory.dmp

Filesize
56KB

Download
memory/2180-122-0x0000000005330000-0x000000000582E000-memory.dmp

Filesize
5.0MB

Download
memory/2180-121-0x0000000005590000-0x0000000005591000-memory.dmp

Filesize
4KB

Download
memory/2180-115-0x0000000000900000-0x0000000000901000-memory.dmp

Filesize
4KB

Download
memory/2180-119-0x00000000053D0000-0x00000000053D1000-memory.dmp

Filesize
4KB

Download
memory/2180-118-0x0000000005830000-0x0000000005831000-memory.dmp

Filesize
4KB

Download
memory/2180-117-0x0000000005220000-0x0000000005221000-memory.dmp

Filesize
4KB

Download
memory/3092-126-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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