agenttesla | 0007f855c65b913a538d9a7680c5078dcdf8f49e26f37a130ec982c275bb693b

General

Target

tmp.exe
Size

276KB
MD5

e3602917ee3758b7f6bd1e098d82a9e1
SHA1

812a778166e467d3512e0adababe453058d0f13e
SHA256

0007f855c65b913a538d9a7680c5078dcdf8f49e26f37a130ec982c275bb693b
SHA512

6266862beea704497d97f0d31c8e62ae6814caa78f3d25ee6b7582f0edec43756d79ac74b6bede4c4b06d8ea7859608377ba20110db3fa99359d95d303f0e4f5
SSDEEP

6144:PYa6ajbSe4h+mT2g1pZMyg1LgagWbqwFfteR3Se7v6Y:PYcCe4hPMt1Lga1qwFftqCmyY

Score

10^/10

agenttesla collection keylogger persistence spyware stealer trojan

Malware Config

Signatures

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

Executes dropped EXE 2 IoCs

pid	Process
2816	wnvjnokxxy.exe
4252	wnvjnokxxy.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

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-144354903-2550862337-1367551827-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	wnvjnokxxy.exe
Key opened	\REGISTRY\USER\S-1-5-21-144354903-2550862337-1367551827-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	wnvjnokxxy.exe
Key opened	\REGISTRY\USER\S-1-5-21-144354903-2550862337-1367551827-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	wnvjnokxxy.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-144354903-2550862337-1367551827-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\qmvrbkgpyue = "C:\\Users\\Admin\\AppData\\Roaming\\gcluqa\\jfojscxh.exe \"C:\\Users\\Admin\\AppData\\Local\\Temp\\wnvjnokxxy.exe\" C:\\Users\\Admin\\AppData\\Local"	wnvjnokxxy.exe

Looks up external IP address via web service 2 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
21	api.ipify.org
22	api.ipify.org

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2816 set thread context of 4252	2816	wnvjnokxxy.exe	87

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
2816	wnvjnokxxy.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4252	wnvjnokxxy.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2548 wrote to memory of 2816	2548	tmp.exe	85
PID 2548 wrote to memory of 2816	2548	tmp.exe	85
PID 2548 wrote to memory of 2816	2548	tmp.exe	85
PID 2816 wrote to memory of 4252	2816	wnvjnokxxy.exe	87
PID 2816 wrote to memory of 4252	2816	wnvjnokxxy.exe	87
PID 2816 wrote to memory of 4252	2816	wnvjnokxxy.exe	87
PID 2816 wrote to memory of 4252	2816	wnvjnokxxy.exe	87

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-144354903-2550862337-1367551827-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	wnvjnokxxy.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-144354903-2550862337-1367551827-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	wnvjnokxxy.exe

C:\Users\Admin\AppData\Local\Temp\tmp.exe
"C:\Users\Admin\AppData\Local\Temp\tmp.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:2548
- C:\Users\Admin\AppData\Local\Temp\wnvjnokxxy.exe
  "C:\Users\Admin\AppData\Local\Temp\wnvjnokxxy.exe" C:\Users\Admin\AppData\Local\Temp\juyxpwva.zwc
  2⤵
  - Executes dropped EXE
  - Adds Run key to start application
  - Suspicious use of SetThreadContext
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of WriteProcessMemory
  PID:2816
- - C:\Users\Admin\AppData\Local\Temp\wnvjnokxxy.exe
    "C:\Users\Admin\AppData\Local\Temp\wnvjnokxxy.exe"
    3⤵
    - Executes dropped EXE
    - Accesses Microsoft Outlook profiles
    - Suspicious use of AdjustPrivilegeToken
    - outlook_office_path
    - outlook_win_path
    PID:4252

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

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

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\arofxivtwdm.hjz

Filesize
263KB

MD5
29d7208c93e91a9b888fe26111a2580f

SHA1
116d87d6b87b8a6fa3fca4320a1d06a95b6f6a59

SHA256
b61ddb5658fd971cb0312ddfc9be766548457ba53f971e93db1552609fc21937

SHA512
81f471c7e66acf0a3954b257c6135071af40b4e7e697c3f40c1e69cbe36f5a91a71486ecfa67321c385be6fc657672916666b6fbda9d9b1a598e5b386f0dccf2

Download Submit
C:\Users\Admin\AppData\Local\Temp\juyxpwva.zwc

Filesize
7KB

MD5
00d6e183e3ed31b21323d9c0f19dc7f1

SHA1
dd6d70ce237bbb6f4021b00e0f0311fc71db8df8

SHA256
1129502b9c04c141615931e76b6e174f820e297298625b8bc362fee20790dd8f

SHA512
6308d46e1516da2ea2694de9b6ba29294b83b7bc2c0aaf4aafe65516f3143477e35db547e65221d2d20df9fbf7eb3c2e01d500718054e813c44d34f47137138d

Download Submit
C:\Users\Admin\AppData\Local\Temp\wnvjnokxxy.exe

Filesize
26KB

MD5
cfa51cfa7c6f5bf9fb33b74d80d8948a

SHA1
bbd9157baec515385936374e24699ad928508acb

SHA256
e0b9509c0aa6ccffa28cf67bc0b733ae6d253537fd38d72d83c813a82aa5b087

SHA512
80686ed8462854c2f79ce0807002d6ab3c980431db5f69ba42b3f1cfb152bab7fd2181b5caec1297c76e69f5e8d2a205b5f5cef42f3edacc3cbd6841278eacb5

Download Submit
C:\Users\Admin\AppData\Local\Temp\wnvjnokxxy.exe

Filesize
26KB

MD5
cfa51cfa7c6f5bf9fb33b74d80d8948a

SHA1
bbd9157baec515385936374e24699ad928508acb

SHA256
e0b9509c0aa6ccffa28cf67bc0b733ae6d253537fd38d72d83c813a82aa5b087

SHA512
80686ed8462854c2f79ce0807002d6ab3c980431db5f69ba42b3f1cfb152bab7fd2181b5caec1297c76e69f5e8d2a205b5f5cef42f3edacc3cbd6841278eacb5

Download Submit
C:\Users\Admin\AppData\Local\Temp\wnvjnokxxy.exe

Filesize
26KB

MD5
cfa51cfa7c6f5bf9fb33b74d80d8948a

SHA1
bbd9157baec515385936374e24699ad928508acb

SHA256
e0b9509c0aa6ccffa28cf67bc0b733ae6d253537fd38d72d83c813a82aa5b087

SHA512
80686ed8462854c2f79ce0807002d6ab3c980431db5f69ba42b3f1cfb152bab7fd2181b5caec1297c76e69f5e8d2a205b5f5cef42f3edacc3cbd6841278eacb5

Download Submit
memory/4252-150-0x0000000000400000-0x0000000000441000-memory.dmp

Filesize
260KB

Download
memory/4252-154-0x0000000005210000-0x0000000005220000-memory.dmp

Filesize
64KB

Download
memory/4252-146-0x0000000000400000-0x0000000000441000-memory.dmp

Filesize
260KB

Download
memory/4252-148-0x00000000057D0000-0x0000000005D74000-memory.dmp

Filesize
5.6MB

Download
memory/4252-149-0x0000000005170000-0x00000000051D6000-memory.dmp

Filesize
408KB

Download
memory/4252-143-0x0000000000400000-0x0000000000441000-memory.dmp

Filesize
260KB

Download
memory/4252-151-0x0000000005210000-0x0000000005220000-memory.dmp

Filesize
64KB

Download
memory/4252-152-0x0000000005210000-0x0000000005220000-memory.dmp

Filesize
64KB

Download
memory/4252-153-0x0000000005210000-0x0000000005220000-memory.dmp

Filesize
64KB

Download
memory/4252-145-0x0000000000400000-0x0000000000441000-memory.dmp

Filesize
260KB

Download
memory/4252-155-0x00000000067F0000-0x0000000006882000-memory.dmp

Filesize
584KB

Download
memory/4252-156-0x00000000067D0000-0x00000000067DA000-memory.dmp

Filesize
40KB

Download
memory/4252-157-0x00000000069F0000-0x0000000006A40000-memory.dmp

Filesize
320KB

Download
memory/4252-158-0x0000000006C10000-0x0000000006DD2000-memory.dmp

Filesize
1.8MB

Download
memory/4252-159-0x0000000005210000-0x0000000005220000-memory.dmp

Filesize
64KB

Download
memory/4252-160-0x0000000005210000-0x0000000005220000-memory.dmp

Filesize
64KB

Download
memory/4252-161-0x0000000005210000-0x0000000005220000-memory.dmp

Filesize
64KB

Download
memory/4252-162-0x0000000005210000-0x0000000005220000-memory.dmp

Filesize
64KB

Download

Analysis

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