agenttesla | ab49c5ba806d4b3aef68b4a70c2ebb261f4b7cd6e74f3ec838c9d59aacf969c5

Analysis

max time kernel
144s
max time network
138s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
24-05-2024 01:36

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General

Target

Purchase Order PO05232024.exe
Size

701KB
MD5

818e095a728bb7fde8d34c3276c01e15
SHA1

5bc32d174f3dc493312b330d01ceb55e58127f4c
SHA256

dd39d251c8d31fdcd410940c7e3a6b1ec76c62b341c60810215da5434d2cb52a
SHA512

3f65fe9b8b0755ae9faad6cd7028fae580e09401de2eb988814292458c256c21ea01ba1e481ecd28c7c8615b0457405b32744be7190bdae58846c300c9ef3672
SSDEEP

12288:bvp1DrAkngRmfxs7u//fARGujCxyIG1TxHhsS14P6bu4:TnDrA/mfWu/gnjNdNhd14CV

Score

10^/10

agenttesla guloader downloader keylogger spyware stealer trojan

Malware Config

Extracted

Credentials

Protocol: smtp
Host:
mail.queenstreetsurgery.co.za
Port:
587
Username:
[email protected]
Password:
20Queen St.

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
mail.queenstreetsurgery.co.za
Port:
587
Username:
[email protected]
Password:
20Queen St.
Email To:
[email protected]

Signatures

AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
keylogger trojan stealer spyware agenttesla
Guloader,Cloudeye
A shellcode based downloader first seen in 2020.
downloader guloader

Detect packed .NET executables. Mostly AgentTeslaV4. 2 IoCs

Processes:

resource	yara_rule
behavioral2/memory/2408-18-0x00000000004E0000-0x0000000001734000-memory.dmp	INDICATOR_EXE_Packed_GEN01
behavioral2/memory/2408-20-0x00000000004E0000-0x0000000000522000-memory.dmp	INDICATOR_EXE_Packed_GEN01

Detects binaries (Windows and macOS) referencing many web browsers. Observed in information stealers. 2 IoCs

Processes:

resource	yara_rule
behavioral2/memory/2408-18-0x00000000004E0000-0x0000000001734000-memory.dmp	INDICATOR_SUSPICIOUS_Binary_References_Browsers
behavioral2/memory/2408-20-0x00000000004E0000-0x0000000000522000-memory.dmp	INDICATOR_SUSPICIOUS_Binary_References_Browsers

Detects binaries and memory artifacts referencing sandbox DLLs typically observed in sandbox evasion 2 IoCs

Processes:

resource	yara_rule
behavioral2/memory/2408-18-0x00000000004E0000-0x0000000001734000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_SandboxHookingDLL
behavioral2/memory/2408-20-0x00000000004E0000-0x0000000000522000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_SandboxHookingDLL

Detects executables referencing Windows vault credential objects. Observed in infostealers 2 IoCs

Processes:

resource	yara_rule
behavioral2/memory/2408-18-0x00000000004E0000-0x0000000001734000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_VaultSchemaGUID
behavioral2/memory/2408-20-0x00000000004E0000-0x0000000000522000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_VaultSchemaGUID

Detects executables referencing many confidential data stores found in browsers, mail clients, cryptocurreny wallets, etc. Observed in information stealers 2 IoCs

Processes:

resource	yara_rule
behavioral2/memory/2408-18-0x00000000004E0000-0x0000000001734000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_References_Confidential_Data_Store
behavioral2/memory/2408-20-0x00000000004E0000-0x0000000000522000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_References_Confidential_Data_Store

Detects executables referencing many email and collaboration clients. Observed in information stealers 2 IoCs

Processes:

resource	yara_rule
behavioral2/memory/2408-18-0x00000000004E0000-0x0000000001734000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_References_Messaging_Clients
behavioral2/memory/2408-20-0x00000000004E0000-0x0000000000522000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_References_Messaging_Clients

Detects executables referencing many file transfer clients. Observed in information stealers 2 IoCs

Processes:

resource	yara_rule
behavioral2/memory/2408-18-0x00000000004E0000-0x0000000001734000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_Referenfces_File_Transfer_Clients
behavioral2/memory/2408-20-0x00000000004E0000-0x0000000000522000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_Referenfces_File_Transfer_Clients

Loads dropped DLL 1 IoCs

Processes:

Purchase Order PO05232024.exe

pid process

2072 Purchase Order PO05232024.exe
Reads WinSCP keys stored on the system 2 TTPs
Tries to access WinSCP stored sessions.
spyware stealer

Data from Local System
T1005

Credentials in Registry
T1552.002
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
T1552.001
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 2 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
Looks up external IP address via web service 3 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.

Processes:

flow ioc

26 api.ipify.org
27 api.ipify.org
28 ip-api.com
Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs

Processes:

Purchase Order PO05232024.exe

pid process

2408 Purchase Order PO05232024.exe
Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

Processes:

Purchase Order PO05232024.exePurchase Order PO05232024.exe

pid process

2072 Purchase Order PO05232024.exe
2408 Purchase Order PO05232024.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

Purchase Order PO05232024.exe

description pid process target process

PID 2072 set thread context of 2408 2072 Purchase Order PO05232024.exe Purchase Order PO05232024.exe

pid	process
2072	Purchase Order PO05232024.exe

flow	ioc
26	api.ipify.org
27	api.ipify.org
28	ip-api.com

pid	process
2408	Purchase Order PO05232024.exe

pid	process
2072	Purchase Order PO05232024.exe
2408	Purchase Order PO05232024.exe

description	pid	process	target process
PID 2072 set thread context of 2408	2072	Purchase Order PO05232024.exe	Purchase Order PO05232024.exe

Drops file in Windows directory 2 IoCs

Processes:

Purchase Order PO05232024.exe

description	ioc	process
File opened for modification	C:\Windows\resources\0409\stanse\selenitic.imp	Purchase Order PO05232024.exe
File opened for modification	C:\Windows\Fonts\humanhood.krs	Purchase Order PO05232024.exe

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

System Information Discovery
T1082
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

Purchase Order PO05232024.exe

pid process

2408 Purchase Order PO05232024.exe
2408 Purchase Order PO05232024.exe
Suspicious behavior: MapViewOfSection 1 IoCs

Processes:

Purchase Order PO05232024.exe

pid process

2072 Purchase Order PO05232024.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

Purchase Order PO05232024.exe

description pid process

Token: SeDebugPrivilege 2408 Purchase Order PO05232024.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

Purchase Order PO05232024.exe

pid process

2408 Purchase Order PO05232024.exe

pid	process
2408	Purchase Order PO05232024.exe
2408	Purchase Order PO05232024.exe

pid	process
2072	Purchase Order PO05232024.exe

description	pid	process
Token: SeDebugPrivilege	2408	Purchase Order PO05232024.exe

pid	process
2408	Purchase Order PO05232024.exe

Suspicious use of WriteProcessMemory 5 IoCs

Processes:

Purchase Order PO05232024.exe

description	pid	process	target process
PID 2072 wrote to memory of 2408	2072	Purchase Order PO05232024.exe	Purchase Order PO05232024.exe
PID 2072 wrote to memory of 2408	2072	Purchase Order PO05232024.exe	Purchase Order PO05232024.exe
PID 2072 wrote to memory of 2408	2072	Purchase Order PO05232024.exe	Purchase Order PO05232024.exe
PID 2072 wrote to memory of 2408	2072	Purchase Order PO05232024.exe	Purchase Order PO05232024.exe
PID 2072 wrote to memory of 2408	2072	Purchase Order PO05232024.exe	Purchase Order PO05232024.exe

C:\Users\Admin\AppData\Local\Temp\Purchase Order PO05232024.exe
"C:\Users\Admin\AppData\Local\Temp\Purchase Order PO05232024.exe"
1⤵
- Loads dropped DLL
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- Drops file in Windows directory
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:2072

C:\Users\Admin\AppData\Local\Temp\Purchase Order PO05232024.exe
"C:\Users\Admin\AppData\Local\Temp\Purchase Order PO05232024.exe"
2⤵
- Suspicious use of NtCreateThreadExHideFromDebugger
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
PID:2408

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Credentials in Registry

T1552.002

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\nsg3161.tmp\System.dll
Filesize
11KB

MD5
0ff2d70cfdc8095ea99ca2dabbec3cd7

SHA1
10c51496d37cecd0e8a503a5a9bb2329d9b38116

SHA256
982c5fb7ada7d8c9bc3e419d1c35da6f05bc5dd845940c179af3a33d00a36a8b

SHA512
cb5fc0b3194f469b833c2c9abf493fcec5251e8609881b7f5e095b9bd09ed468168e95dda0ba415a7d8d6b7f0dee735467c0ed8e52b223eb5359986891ba6e2e

Download Submit
memory/2072-19-0x0000000002BF0000-0x0000000005892000-memory.dmp

Filesize
44.6MB

Download
memory/2072-9-0x0000000002BF0000-0x0000000005892000-memory.dmp

Filesize
44.6MB

Download
memory/2072-10-0x0000000077671000-0x0000000077791000-memory.dmp

Filesize
1.1MB

Download
memory/2072-11-0x0000000010004000-0x0000000010005000-memory.dmp

Filesize
4KB

Download
memory/2072-13-0x0000000002BF0000-0x0000000005892000-memory.dmp

Filesize
44.6MB

Download
memory/2408-12-0x0000000001740000-0x00000000043E2000-memory.dmp

Filesize
44.6MB

Download
memory/2408-18-0x00000000004E0000-0x0000000001734000-memory.dmp

Filesize
18.3MB

Download
memory/2408-14-0x00000000004E0000-0x0000000001734000-memory.dmp

Filesize
18.3MB

Download
memory/2408-20-0x00000000004E0000-0x0000000000522000-memory.dmp

Filesize
264KB

Download
memory/2408-21-0x00000000370A0000-0x0000000037644000-memory.dmp

Filesize
5.6MB

Download
memory/2408-22-0x0000000037750000-0x00000000377B6000-memory.dmp

Filesize
408KB

Download
memory/2408-23-0x0000000037E90000-0x0000000037EE0000-memory.dmp

Filesize
320KB

Download
memory/2408-24-0x0000000037EE0000-0x0000000037F7C000-memory.dmp

Filesize
624KB

Download
memory/2408-26-0x0000000001740000-0x00000000043E2000-memory.dmp

Filesize
44.6MB

Download
memory/2408-27-0x0000000037F80000-0x0000000038012000-memory.dmp

Filesize
584KB

Download
memory/2408-28-0x0000000038190000-0x000000003819A000-memory.dmp

Filesize
40KB

Download