agenttesla | 9ef7b881397f3ad7d7c7a0b4fa8b4f5d88077df7327fad30a16e8ee633a282b1

Analysis

max time kernel
140s
max time network
31s
platform
windows7_x64
resource
win7-20230703-en
resource tags

arch:x64arch:x86image:win7-20230703-enlocale:en-usos:windows7-x64system
submitted
07/07/2023, 07:28

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General

Target

Order.xls
Size

1.1MB
MD5

e61ef35786f8c9fc93775070a5fbeec5
SHA1

8ced2497907895641391537efdc9c9a354892a88
SHA256

9ef7b881397f3ad7d7c7a0b4fa8b4f5d88077df7327fad30a16e8ee633a282b1
SHA512

ca4ed78a94cf732cead859119e2f37ab394d8335911cc3797f23be74ff415d9bf766e139ff7da6e98ca3791b1f62b4a49053f1d980dc6eaeab2291c8873c93c0
SSDEEP

24576:GBlzWw6sIzvo0xfsjcUos+xKYw6s4zAo0xfsjcUos+xKw3dYjIqJPoaTwnx:wN6sI3xfsjdos+xKT6s4Axfsjdos+xKc

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

Blocklisted process makes network request 1 IoCs

flow	pid	Process
3	1320	EQNEDT32.EXE

Downloads MZ/PE file

Executes dropped EXE 2 IoCs

pid	Process
1140	IBM_Centoss.exe
2016	IBM_Centoss.exe

Loads dropped DLL 3 IoCs

pid	Process
1320	EQNEDT32.EXE
1140	IBM_Centoss.exe
1140	IBM_Centoss.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-1-5-21-264077997-199365141-898621884-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	IBM_Centoss.exe
Key opened	\REGISTRY\USER\S-1-5-21-264077997-199365141-898621884-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	IBM_Centoss.exe
Key opened	\REGISTRY\USER\S-1-5-21-264077997-199365141-898621884-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	IBM_Centoss.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-1-5-21-264077997-199365141-898621884-1000\Software\Microsoft\Windows\CurrentVersion\Run\sOFvE = "C:\\Users\\Admin\\AppData\\Roaming\\sOFvE\\sOFvE.exe"	IBM_Centoss.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
4	api.ipify.org
5	api.ipify.org

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1140 set thread context of 2016	1140	IBM_Centoss.exe	32

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

System Information Discovery
T1082

Enumerates system info in registry 2 TTPs 1 IoCs

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\FloatingPointProcessor	EXCEL.EXE

Launches Equation Editor 1 TTPs 1 IoCs

Equation Editor is an old Office component often targeted by exploits such as CVE-2017-11882.

exploit

Exploitation for Client Execution

T1203

pid	Process
1320	EQNEDT32.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
2060	EXCEL.EXE

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2016	IBM_Centoss.exe
2016	IBM_Centoss.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
1140	IBM_Centoss.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2016	IBM_Centoss.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
2060	EXCEL.EXE
2060	EXCEL.EXE
2060	EXCEL.EXE

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 1320 wrote to memory of 1140	1320	EQNEDT32.EXE	31
PID 1320 wrote to memory of 1140	1320	EQNEDT32.EXE	31
PID 1320 wrote to memory of 1140	1320	EQNEDT32.EXE	31
PID 1320 wrote to memory of 1140	1320	EQNEDT32.EXE	31
PID 1140 wrote to memory of 2016	1140	IBM_Centoss.exe	32
PID 1140 wrote to memory of 2016	1140	IBM_Centoss.exe	32
PID 1140 wrote to memory of 2016	1140	IBM_Centoss.exe	32
PID 1140 wrote to memory of 2016	1140	IBM_Centoss.exe	32
PID 1140 wrote to memory of 2016	1140	IBM_Centoss.exe	32

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-264077997-199365141-898621884-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	IBM_Centoss.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-264077997-199365141-898621884-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	IBM_Centoss.exe

C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE
"C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE" /dde C:\Users\Admin\AppData\Local\Temp\Order.xls
1⤵
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
PID:2060

C:\Program Files (x86)\Common Files\Microsoft Shared\EQUATION\EQNEDT32.EXE
"C:\Program Files (x86)\Common Files\Microsoft Shared\EQUATION\EQNEDT32.EXE" -Embedding
1⤵
- Blocklisted process makes network request
- Loads dropped DLL
- Launches Equation Editor
- Suspicious use of WriteProcessMemory
PID:1320
- C:\Users\Admin\AppData\Local\Temp\IBM_Centoss.exe
  "C:\Users\Admin\AppData\Local\Temp\IBM_Centoss.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Suspicious use of SetThreadContext
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of WriteProcessMemory
  PID:1140
- - C:\Users\Admin\AppData\Local\Temp\IBM_Centoss.exe
    "C:\Users\Admin\AppData\Local\Temp\IBM_Centoss.exe"
    3⤵
    - Executes dropped EXE
    - Accesses Microsoft Outlook profiles
    - Adds Run key to start application
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - outlook_office_path
    - outlook_win_path
    PID:2016

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Exploitation for Client Execution

T1203

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Credentials in Files

T1081

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Email Collection

T1114

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.MSO\B29D8C40.emf

Filesize
1.4MB

MD5
1fcb3f34b5588f6a647a06dff1811bf9

SHA1
1f5ef0e6e41c14795decedcefc883ab9000fac9a

SHA256
a99e8172248dac0b2a6243d06a862901989857b0c2ecbed5f25ddb0d1a95154e

SHA512
47e951583afff444f9adb09beab0d83f9792b46d3e1fabf05d21068218d64b3cba48e2dc22fe0a7bd3252a0e0c8866faa244b5dc3784bd336ecbc9f2924fb2aa

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

Filesize
374KB

MD5
261fad7a9f8939250bf2c3c1406f0fe9

SHA1
f7b1192b8d59ea40819a4501ec14c6bf4d447988

SHA256
ea05e4097011864ccb2556f12a4be7568129a8a456975c696aea0cfbc7372cf4

SHA512
37c01f94f37203f4ce53dd4a4dcf0ffcddd686cae88cccbbe473f77678fd99cc3fa10b62ce33af35892fab87f99939f90768964d914b879ecf80ab055b6b06af

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

Filesize
374KB

MD5
261fad7a9f8939250bf2c3c1406f0fe9

SHA1
f7b1192b8d59ea40819a4501ec14c6bf4d447988

SHA256
ea05e4097011864ccb2556f12a4be7568129a8a456975c696aea0cfbc7372cf4

SHA512
37c01f94f37203f4ce53dd4a4dcf0ffcddd686cae88cccbbe473f77678fd99cc3fa10b62ce33af35892fab87f99939f90768964d914b879ecf80ab055b6b06af

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

Filesize
374KB

MD5
261fad7a9f8939250bf2c3c1406f0fe9

SHA1
f7b1192b8d59ea40819a4501ec14c6bf4d447988

SHA256
ea05e4097011864ccb2556f12a4be7568129a8a456975c696aea0cfbc7372cf4

SHA512
37c01f94f37203f4ce53dd4a4dcf0ffcddd686cae88cccbbe473f77678fd99cc3fa10b62ce33af35892fab87f99939f90768964d914b879ecf80ab055b6b06af

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

Filesize
374KB

MD5
261fad7a9f8939250bf2c3c1406f0fe9

SHA1
f7b1192b8d59ea40819a4501ec14c6bf4d447988

SHA256
ea05e4097011864ccb2556f12a4be7568129a8a456975c696aea0cfbc7372cf4

SHA512
37c01f94f37203f4ce53dd4a4dcf0ffcddd686cae88cccbbe473f77678fd99cc3fa10b62ce33af35892fab87f99939f90768964d914b879ecf80ab055b6b06af

Download Submit
\Users\Admin\AppData\Local\Temp\IBM_Centoss.exe

Filesize
374KB

MD5
261fad7a9f8939250bf2c3c1406f0fe9

SHA1
f7b1192b8d59ea40819a4501ec14c6bf4d447988

SHA256
ea05e4097011864ccb2556f12a4be7568129a8a456975c696aea0cfbc7372cf4

SHA512
37c01f94f37203f4ce53dd4a4dcf0ffcddd686cae88cccbbe473f77678fd99cc3fa10b62ce33af35892fab87f99939f90768964d914b879ecf80ab055b6b06af

Download Submit
\Users\Admin\AppData\Local\Temp\IBM_Centoss.exe

Filesize
374KB

MD5
261fad7a9f8939250bf2c3c1406f0fe9

SHA1
f7b1192b8d59ea40819a4501ec14c6bf4d447988

SHA256
ea05e4097011864ccb2556f12a4be7568129a8a456975c696aea0cfbc7372cf4

SHA512
37c01f94f37203f4ce53dd4a4dcf0ffcddd686cae88cccbbe473f77678fd99cc3fa10b62ce33af35892fab87f99939f90768964d914b879ecf80ab055b6b06af

Download Submit
\Users\Admin\AppData\Local\Temp\nsz4695.tmp\vfdhf.dll

Filesize
255KB

MD5
5d24796b9dba9ef36b9af8c9b147e823

SHA1
3e960f30a586fef6fa26bc9387aba246321873e5

SHA256
49e975c6069e643f38f87dc84e654752c4d13811c8d61d528187471033d6d876

SHA512
7ce60939cf8908787d498823538bf00c820ec8a45ef9fa3c6824036016fd8784ed6a4e59345d4817e7b6f6ac3cfa3869433a0a4b0a3408f1f12bfcaaefe0037d

Download Submit
memory/2016-78-0x0000000000400000-0x0000000000441000-memory.dmp

Filesize
260KB

Download
memory/2016-81-0x0000000000400000-0x0000000000441000-memory.dmp

Filesize
260KB

Download
memory/2016-82-0x0000000001FE0000-0x0000000002010000-memory.dmp

Filesize
192KB

Download
memory/2016-84-0x0000000004600000-0x0000000004640000-memory.dmp

Filesize
256KB

Download
memory/2016-85-0x0000000000400000-0x0000000000441000-memory.dmp

Filesize
260KB

Download
memory/2016-86-0x0000000004600000-0x0000000004640000-memory.dmp

Filesize
256KB

Download
memory/2016-88-0x0000000004600000-0x0000000004640000-memory.dmp

Filesize
256KB

Download
memory/2060-54-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download
memory/2060-102-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download