agenttesla | 5f4169a8824fda323a8447cbdd8622d682e1364528946062905724fd364d3fdc

General

Target

dekont_20240424_388993774837743.exe
Size

1000KB
MD5

899f3fc8c4f3584ee69c1f302eb7ed3c
SHA1

b8cb8b8010a32f5698dd5f40bdc3069a02473bf0
SHA256

237e35d7e5f71e53faa66955d912ab7c132efeb7c0259d2ad21af6d6f538d553
SHA512

ac66739646767c4ee95de811c8c025138ea4d87278c4e7e38e99b4a377ea97d3dc7f0a90d61ccc4379cf52bed414766685427efd6b25e94ad4fb5be94a0cc122
SSDEEP

24576:UsP3nYjPuJ3FYB9myrPygZxjKER/pamxFx5:UwJ31aagZxGa/pamd5

Score

10^/10

agenttesla keylogger spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

C2

https://api.telegram.org/bot6542794227:AAFN3zw1IO9ShlzjqfCM2wKZwSz3yRGzRas/

Signatures

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

Detect packed .NET executables. Mostly AgentTeslaV4. 1 IoCs

Processes:

resource	yara_rule
behavioral2/memory/800-4-0x0000000000400000-0x0000000000440000-memory.dmp	INDICATOR_EXE_Packed_GEN01

Detects binaries (Windows and macOS) referencing many web browsers. Observed in information stealers. 1 IoCs

Processes:

resource	yara_rule
behavioral2/memory/800-4-0x0000000000400000-0x0000000000440000-memory.dmp	INDICATOR_SUSPICIOUS_Binary_References_Browsers

Detects executables packed with or use KoiVM 1 IoCs

Processes:

resource	yara_rule
behavioral2/memory/2928-3-0x000001C977460000-0x000001C9774F6000-memory.dmp	INDICATOR_EXE_Packed_KoiVM

Detects executables referencing Windows vault credential objects. Observed in infostealers 1 IoCs

Processes:

resource	yara_rule
behavioral2/memory/800-4-0x0000000000400000-0x0000000000440000-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 1 IoCs

Processes:

resource	yara_rule
behavioral2/memory/800-4-0x0000000000400000-0x0000000000440000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_References_Confidential_Data_Store

Detects executables referencing many email and collaboration clients. Observed in information stealers 1 IoCs

Processes:

resource	yara_rule
behavioral2/memory/800-4-0x0000000000400000-0x0000000000440000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_References_Messaging_Clients

Detects executables referencing many file transfer clients. Observed in information stealers 1 IoCs

Processes:

resource	yara_rule
behavioral2/memory/800-4-0x0000000000400000-0x0000000000440000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_Referenfces_File_Transfer_Clients

Suspicious use of SetThreadContext 1 IoCs

Processes:

dekont_20240424_388993774837743.exe

description pid process target process

PID 2928 set thread context of 800 2928 dekont_20240424_388993774837743.exe installutil.exe
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

installutil.exe

pid process

800 installutil.exe
800 installutil.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

installutil.exe

description pid process

Token: SeDebugPrivilege 800 installutil.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

installutil.exe

pid process

800 installutil.exe

description	pid	process	target process
PID 2928 set thread context of 800	2928	dekont_20240424_388993774837743.exe	installutil.exe

pid	process
800	installutil.exe
800	installutil.exe

description	pid	process
Token: SeDebugPrivilege	800	installutil.exe

pid	process
800	installutil.exe

Suspicious use of WriteProcessMemory 14 IoCs

Processes:

dekont_20240424_388993774837743.exe

description	pid	process	target process
PID 2928 wrote to memory of 3372	2928	dekont_20240424_388993774837743.exe	msbuild.exe
PID 2928 wrote to memory of 3372	2928	dekont_20240424_388993774837743.exe	msbuild.exe
PID 2928 wrote to memory of 3372	2928	dekont_20240424_388993774837743.exe	msbuild.exe
PID 2928 wrote to memory of 800	2928	dekont_20240424_388993774837743.exe	installutil.exe
PID 2928 wrote to memory of 800	2928	dekont_20240424_388993774837743.exe	installutil.exe
PID 2928 wrote to memory of 800	2928	dekont_20240424_388993774837743.exe	installutil.exe
PID 2928 wrote to memory of 800	2928	dekont_20240424_388993774837743.exe	installutil.exe
PID 2928 wrote to memory of 800	2928	dekont_20240424_388993774837743.exe	installutil.exe
PID 2928 wrote to memory of 800	2928	dekont_20240424_388993774837743.exe	installutil.exe
PID 2928 wrote to memory of 800	2928	dekont_20240424_388993774837743.exe	installutil.exe
PID 2928 wrote to memory of 800	2928	dekont_20240424_388993774837743.exe	installutil.exe
PID 2928 wrote to memory of 1512	2928	dekont_20240424_388993774837743.exe	installutil.exe
PID 2928 wrote to memory of 1512	2928	dekont_20240424_388993774837743.exe	installutil.exe
PID 2928 wrote to memory of 1512	2928	dekont_20240424_388993774837743.exe	installutil.exe

C:\Users\Admin\AppData\Local\Temp\dekont_20240424_388993774837743.exe
"C:\Users\Admin\AppData\Local\Temp\dekont_20240424_388993774837743.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2928

C:\Windows\Microsoft.NET\Framework\v4.0.30319\msbuild.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\msbuild.exe"
2⤵
PID:3372

C:\Windows\Microsoft.NET\Framework\v4.0.30319\installutil.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\installutil.exe"
2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
PID:800

C:\Windows\Microsoft.NET\Framework\v4.0.30319\installutil.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\installutil.exe"
2⤵
PID:1512

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=5068 --field-trial-handle=2284,i,9807419199535700662,2319175108930815708,262144 --variations-seed-version /prefetch:8
1⤵
PID:4060

Network

MITRE ATT&CK Matrix

Replay Monitor

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Downloads

memory/800-10-0x0000000006250000-0x00000000062A0000-memory.dmp

Filesize
320KB

Download
memory/800-14-0x0000000005290000-0x00000000052A0000-memory.dmp

Filesize
64KB

Download
memory/800-13-0x0000000074AE0000-0x0000000075290000-memory.dmp

Filesize
7.7MB

Download
memory/800-12-0x00000000064E0000-0x00000000064EA000-memory.dmp

Filesize
40KB

Download
memory/800-4-0x0000000000400000-0x0000000000440000-memory.dmp

Filesize
256KB

Download
memory/800-5-0x0000000074AE0000-0x0000000075290000-memory.dmp

Filesize
7.7MB

Download
memory/800-11-0x0000000006340000-0x00000000063D2000-memory.dmp

Filesize
584KB

Download
memory/800-7-0x0000000005920000-0x0000000005EC4000-memory.dmp

Filesize
5.6MB

Download
memory/800-8-0x0000000005290000-0x00000000052A0000-memory.dmp

Filesize
64KB

Download
memory/800-9-0x0000000005470000-0x00000000054D6000-memory.dmp

Filesize
408KB

Download
memory/2928-3-0x000001C977460000-0x000001C9774F6000-memory.dmp

Filesize
600KB

Download
memory/2928-6-0x00007FFE5FD40000-0x00007FFE60801000-memory.dmp

Filesize
10.8MB

Download
memory/2928-0-0x000001C95D050000-0x000001C95D0BC000-memory.dmp

Filesize
432KB

Download
memory/2928-2-0x000001C977560000-0x000001C977570000-memory.dmp

Filesize
64KB

Download
memory/2928-1-0x00007FFE5FD40000-0x00007FFE60801000-memory.dmp

Filesize
10.8MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix

Replay Monitor

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Downloads