agenttesla | 4da3b16ba44f07d99f82116f4a316e47d83862e575a6e4185f504d52e69cc6f5

General

Target

4da3b16ba44f07d99f82116f4a316e47d83862e575a6e4185f504d52e69cc6f5.exe
Size

713KB
MD5

a68f9e8fe3a6b2a073267af477c2bf31
SHA1

96a682c454cfb32ae2928801e89e67b043e47a4e
SHA256

4da3b16ba44f07d99f82116f4a316e47d83862e575a6e4185f504d52e69cc6f5
SHA512

4e283db9f2f7f013b34e37755005f8eea84153d74b3eed513a07fd97ac3bf11c805d4c34ecd68320defe194fde3fb19bd2ff7759659d75dc703bfc51645a60eb
SSDEEP

12288:dU9jA6JPQbRhkYvg86stzDpi4L3HIb66KWlyaiZAuW1md+:AbsPTL3HIb66rsUD

Score

10^/10

agenttesla keylogger persistence spyware stealer trojan

Malware Config

Extracted

Credentials

Protocol: smtp
Host:
mail.avtorska.com.mk
Port:
587
Username:
[email protected]
Password:
avtorska2014@

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
mail.avtorska.com.mk
Port:
587
Username:
[email protected]
Password:
avtorska2014@
Email To:
[email protected]

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. 5 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2624-10-0x0000000000400000-0x0000000000444000-memory.dmp	INDICATOR_EXE_Packed_GEN01
behavioral1/memory/2624-12-0x0000000000400000-0x0000000000444000-memory.dmp	INDICATOR_EXE_Packed_GEN01
behavioral1/memory/2624-17-0x0000000000400000-0x0000000000444000-memory.dmp	INDICATOR_EXE_Packed_GEN01
behavioral1/memory/2624-21-0x0000000000400000-0x0000000000444000-memory.dmp	INDICATOR_EXE_Packed_GEN01
behavioral1/memory/2624-19-0x0000000000400000-0x0000000000444000-memory.dmp	INDICATOR_EXE_Packed_GEN01

Detects binaries (Windows and macOS) referencing many web browsers. Observed in information stealers. 5 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2624-10-0x0000000000400000-0x0000000000444000-memory.dmp	INDICATOR_SUSPICIOUS_Binary_References_Browsers
behavioral1/memory/2624-12-0x0000000000400000-0x0000000000444000-memory.dmp	INDICATOR_SUSPICIOUS_Binary_References_Browsers
behavioral1/memory/2624-17-0x0000000000400000-0x0000000000444000-memory.dmp	INDICATOR_SUSPICIOUS_Binary_References_Browsers
behavioral1/memory/2624-21-0x0000000000400000-0x0000000000444000-memory.dmp	INDICATOR_SUSPICIOUS_Binary_References_Browsers
behavioral1/memory/2624-19-0x0000000000400000-0x0000000000444000-memory.dmp	INDICATOR_SUSPICIOUS_Binary_References_Browsers

Detects binaries and memory artifacts referencing sandbox DLLs typically observed in sandbox evasion 5 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2624-10-0x0000000000400000-0x0000000000444000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_SandboxHookingDLL
behavioral1/memory/2624-12-0x0000000000400000-0x0000000000444000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_SandboxHookingDLL
behavioral1/memory/2624-17-0x0000000000400000-0x0000000000444000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_SandboxHookingDLL
behavioral1/memory/2624-21-0x0000000000400000-0x0000000000444000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_SandboxHookingDLL
behavioral1/memory/2624-19-0x0000000000400000-0x0000000000444000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_SandboxHookingDLL

Detects executables referencing Windows vault credential objects. Observed in infostealers 5 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2624-10-0x0000000000400000-0x0000000000444000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_VaultSchemaGUID
behavioral1/memory/2624-12-0x0000000000400000-0x0000000000444000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_VaultSchemaGUID
behavioral1/memory/2624-17-0x0000000000400000-0x0000000000444000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_VaultSchemaGUID
behavioral1/memory/2624-21-0x0000000000400000-0x0000000000444000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_VaultSchemaGUID
behavioral1/memory/2624-19-0x0000000000400000-0x0000000000444000-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 5 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2624-10-0x0000000000400000-0x0000000000444000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_References_Confidential_Data_Store
behavioral1/memory/2624-12-0x0000000000400000-0x0000000000444000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_References_Confidential_Data_Store
behavioral1/memory/2624-17-0x0000000000400000-0x0000000000444000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_References_Confidential_Data_Store
behavioral1/memory/2624-21-0x0000000000400000-0x0000000000444000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_References_Confidential_Data_Store
behavioral1/memory/2624-19-0x0000000000400000-0x0000000000444000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_References_Confidential_Data_Store

Detects executables referencing many email and collaboration clients. Observed in information stealers 5 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2624-10-0x0000000000400000-0x0000000000444000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_References_Messaging_Clients
behavioral1/memory/2624-12-0x0000000000400000-0x0000000000444000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_References_Messaging_Clients
behavioral1/memory/2624-17-0x0000000000400000-0x0000000000444000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_References_Messaging_Clients
behavioral1/memory/2624-21-0x0000000000400000-0x0000000000444000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_References_Messaging_Clients
behavioral1/memory/2624-19-0x0000000000400000-0x0000000000444000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_References_Messaging_Clients

Detects executables referencing many file transfer clients. Observed in information stealers 5 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2624-10-0x0000000000400000-0x0000000000444000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_Referenfces_File_Transfer_Clients
behavioral1/memory/2624-12-0x0000000000400000-0x0000000000444000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_Referenfces_File_Transfer_Clients
behavioral1/memory/2624-17-0x0000000000400000-0x0000000000444000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_Referenfces_File_Transfer_Clients
behavioral1/memory/2624-21-0x0000000000400000-0x0000000000444000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_Referenfces_File_Transfer_Clients
behavioral1/memory/2624-19-0x0000000000400000-0x0000000000444000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_Referenfces_File_Transfer_Clients

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

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

RegAsm.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-3452737119-3959686427-228443150-1000\Software\Microsoft\Windows\CurrentVersion\Run\skype = "C:\\Users\\Admin\\AppData\\Roaming\\skype\\skype.exe"	RegAsm.exe

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

4 api.ipify.org
5 api.ipify.org
6 ip-api.com

flow	ioc
4	api.ipify.org
5	api.ipify.org
6	ip-api.com

Suspicious use of SetThreadContext 1 IoCs

Processes:

4da3b16ba44f07d99f82116f4a316e47d83862e575a6e4185f504d52e69cc6f5.exe

description	pid	process	target process
PID 2208 set thread context of 2624	2208	4da3b16ba44f07d99f82116f4a316e47d83862e575a6e4185f504d52e69cc6f5.exe	RegAsm.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

Processes:

4da3b16ba44f07d99f82116f4a316e47d83862e575a6e4185f504d52e69cc6f5.exeRegAsm.exe

pid	process
2208	4da3b16ba44f07d99f82116f4a316e47d83862e575a6e4185f504d52e69cc6f5.exe
2208	4da3b16ba44f07d99f82116f4a316e47d83862e575a6e4185f504d52e69cc6f5.exe
2208	4da3b16ba44f07d99f82116f4a316e47d83862e575a6e4185f504d52e69cc6f5.exe
2208	4da3b16ba44f07d99f82116f4a316e47d83862e575a6e4185f504d52e69cc6f5.exe
2624	RegAsm.exe
2624	RegAsm.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

4da3b16ba44f07d99f82116f4a316e47d83862e575a6e4185f504d52e69cc6f5.exeRegAsm.exe

description	pid	process
Token: SeDebugPrivilege	2208	4da3b16ba44f07d99f82116f4a316e47d83862e575a6e4185f504d52e69cc6f5.exe
Token: SeDebugPrivilege	2624	RegAsm.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

RegAsm.exe

pid process

2624 RegAsm.exe

pid	process
2624	RegAsm.exe

Suspicious use of WriteProcessMemory 12 IoCs

Processes:

4da3b16ba44f07d99f82116f4a316e47d83862e575a6e4185f504d52e69cc6f5.exe

description	pid	process	target process
PID 2208 wrote to memory of 2624	2208	4da3b16ba44f07d99f82116f4a316e47d83862e575a6e4185f504d52e69cc6f5.exe	RegAsm.exe
PID 2208 wrote to memory of 2624	2208	4da3b16ba44f07d99f82116f4a316e47d83862e575a6e4185f504d52e69cc6f5.exe	RegAsm.exe
PID 2208 wrote to memory of 2624	2208	4da3b16ba44f07d99f82116f4a316e47d83862e575a6e4185f504d52e69cc6f5.exe	RegAsm.exe
PID 2208 wrote to memory of 2624	2208	4da3b16ba44f07d99f82116f4a316e47d83862e575a6e4185f504d52e69cc6f5.exe	RegAsm.exe
PID 2208 wrote to memory of 2624	2208	4da3b16ba44f07d99f82116f4a316e47d83862e575a6e4185f504d52e69cc6f5.exe	RegAsm.exe
PID 2208 wrote to memory of 2624	2208	4da3b16ba44f07d99f82116f4a316e47d83862e575a6e4185f504d52e69cc6f5.exe	RegAsm.exe
PID 2208 wrote to memory of 2624	2208	4da3b16ba44f07d99f82116f4a316e47d83862e575a6e4185f504d52e69cc6f5.exe	RegAsm.exe
PID 2208 wrote to memory of 2624	2208	4da3b16ba44f07d99f82116f4a316e47d83862e575a6e4185f504d52e69cc6f5.exe	RegAsm.exe
PID 2208 wrote to memory of 2624	2208	4da3b16ba44f07d99f82116f4a316e47d83862e575a6e4185f504d52e69cc6f5.exe	RegAsm.exe
PID 2208 wrote to memory of 2624	2208	4da3b16ba44f07d99f82116f4a316e47d83862e575a6e4185f504d52e69cc6f5.exe	RegAsm.exe
PID 2208 wrote to memory of 2624	2208	4da3b16ba44f07d99f82116f4a316e47d83862e575a6e4185f504d52e69cc6f5.exe	RegAsm.exe
PID 2208 wrote to memory of 2624	2208	4da3b16ba44f07d99f82116f4a316e47d83862e575a6e4185f504d52e69cc6f5.exe	RegAsm.exe

C:\Users\Admin\AppData\Local\Temp\4da3b16ba44f07d99f82116f4a316e47d83862e575a6e4185f504d52e69cc6f5.exe
"C:\Users\Admin\AppData\Local\Temp\4da3b16ba44f07d99f82116f4a316e47d83862e575a6e4185f504d52e69cc6f5.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2208

C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
2⤵
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
PID:2624

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Credential Access

Unsecured Credentials

2

T1552

Credentials In Files

2

T1552.001

Discovery

Lateral Movement

Collection

Data from Local System

2

T1005

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

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Downloads

C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\94308059B57B3142E455B38A6EB92015
Filesize
68KB

MD5
29f65ba8e88c063813cc50a4ea544e93

SHA1
05a7040d5c127e68c25d81cc51271ffb8bef3568

SHA256
1ed81fa8dfb6999a9fedc6e779138ffd99568992e22d300acd181a6d2c8de184

SHA512
e29b2e92c496245bed3372578074407e8ef8882906ce10c35b3c8deebfefe01b5fd7f3030acaa693e175f4b7aca6cd7d8d10ae1c731b09c5fa19035e005de3aa

Download Submit
C:\Users\Admin\AppData\Local\Temp\TarB082.tmp
Filesize
177KB

MD5
435a9ac180383f9fa094131b173a2f7b

SHA1
76944ea657a9db94f9a4bef38f88c46ed4166983

SHA256
67dc37ed50b8e63272b49a254a6039ee225974f1d767bb83eb1fd80e759a7c34

SHA512
1a6b277611959720a9c71114957620517ad94541302f164eb872bd322292a952409bafb8bc2ac793b16ad5f25d83f8594ccff2b7834e3c2b2b941e6fc84c009a

Download Submit
memory/2208-16-0x0000000074900000-0x0000000074FEE000-memory.dmp

Filesize
6.9MB

Download
memory/2208-15-0x000000007490E000-0x000000007490F000-memory.dmp

Filesize
4KB

Download
memory/2208-4-0x0000000000C80000-0x0000000000C9A000-memory.dmp

Filesize
104KB

Download
memory/2208-5-0x0000000000650000-0x0000000000656000-memory.dmp

Filesize
24KB

Download
memory/2208-1-0x0000000001380000-0x0000000001438000-memory.dmp

Filesize
736KB

Download
memory/2208-3-0x0000000074900000-0x0000000074FEE000-memory.dmp

Filesize
6.9MB

Download
memory/2208-2-0x0000000000EC0000-0x0000000000F04000-memory.dmp

Filesize
272KB

Download
memory/2208-22-0x0000000074900000-0x0000000074FEE000-memory.dmp

Filesize
6.9MB

Download
memory/2208-0-0x000000007490E000-0x000000007490F000-memory.dmp

Filesize
4KB

Download
memory/2624-8-0x0000000000400000-0x0000000000444000-memory.dmp

Filesize
272KB

Download
memory/2624-14-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2624-17-0x0000000000400000-0x0000000000444000-memory.dmp

Filesize
272KB

Download
memory/2624-21-0x0000000000400000-0x0000000000444000-memory.dmp

Filesize
272KB

Download
memory/2624-19-0x0000000000400000-0x0000000000444000-memory.dmp

Filesize
272KB

Download
memory/2624-12-0x0000000000400000-0x0000000000444000-memory.dmp

Filesize
272KB

Download
memory/2624-10-0x0000000000400000-0x0000000000444000-memory.dmp

Filesize
272KB

Download
memory/2624-6-0x0000000000400000-0x0000000000444000-memory.dmp

Filesize
272KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

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Downloads