agenttesla | bae58a6286d8fb60c1118d8024c0aa7e8e8476405b17d05b68502e6bce5b1fd8

General

Target

kYyBuIFRcL6U7Fl.exe
Size

604KB
MD5

dc6c813e0b5c0adab63e8f6e47d3fb76
SHA1

c9979e87cf35d8563a16bf52ad762c04c89badc9
SHA256

3d6012eb13b5a891571ea2d7c7bf120b9c12d479e5cb2c6ffc7e515e14c46866
SHA512

c3e83b275c6aedbf56fe581b6e5f5b7f9ec33573c460eca63590a33326c08378dd7ea04b1d80807fdfc74738d432adb9b37892a0655aff8611d2e30f4d9f9ef3
SSDEEP

12288:z+E26ddIYd1x66+9GreDc4bRbOpPE6/5kqRQeB0QzauW2a5W:aOwO1mQreDc4lypPp+kQelzauWS

Score

10^/10

agenttesla keylogger spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
sg2plcpnl0128.prod.sin2.secureserver.net
Port:
587
Username:
[email protected]
Password:
]EMe[F7b^j@[
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. 6 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2640-26-0x0000000000400000-0x0000000000442000-memory.dmp	INDICATOR_EXE_Packed_GEN01
behavioral1/memory/2640-28-0x0000000000400000-0x0000000000442000-memory.dmp	INDICATOR_EXE_Packed_GEN01
behavioral1/memory/2640-36-0x0000000000400000-0x0000000000442000-memory.dmp	INDICATOR_EXE_Packed_GEN01
behavioral1/memory/2640-39-0x0000000000400000-0x0000000000442000-memory.dmp	INDICATOR_EXE_Packed_GEN01
behavioral1/memory/2640-41-0x0000000000400000-0x0000000000442000-memory.dmp	INDICATOR_EXE_Packed_GEN01
behavioral1/memory/2640-48-0x0000000004AE0000-0x0000000004B20000-memory.dmp	INDICATOR_EXE_Packed_GEN01

Detects binaries (Windows and macOS) referencing many web browsers. Observed in information stealers. 6 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2640-26-0x0000000000400000-0x0000000000442000-memory.dmp	INDICATOR_SUSPICIOUS_Binary_References_Browsers
behavioral1/memory/2640-28-0x0000000000400000-0x0000000000442000-memory.dmp	INDICATOR_SUSPICIOUS_Binary_References_Browsers
behavioral1/memory/2640-36-0x0000000000400000-0x0000000000442000-memory.dmp	INDICATOR_SUSPICIOUS_Binary_References_Browsers
behavioral1/memory/2640-39-0x0000000000400000-0x0000000000442000-memory.dmp	INDICATOR_SUSPICIOUS_Binary_References_Browsers
behavioral1/memory/2640-41-0x0000000000400000-0x0000000000442000-memory.dmp	INDICATOR_SUSPICIOUS_Binary_References_Browsers
behavioral1/memory/2640-48-0x0000000004AE0000-0x0000000004B20000-memory.dmp	INDICATOR_SUSPICIOUS_Binary_References_Browsers

Detects executables packed with SmartAssembly 1 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1968-4-0x0000000000510000-0x000000000051C000-memory.dmp	INDICATOR_EXE_Packed_SmartAssembly

Detects executables referencing Windows vault credential objects. Observed in infostealers 6 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2640-26-0x0000000000400000-0x0000000000442000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_VaultSchemaGUID
behavioral1/memory/2640-28-0x0000000000400000-0x0000000000442000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_VaultSchemaGUID
behavioral1/memory/2640-36-0x0000000000400000-0x0000000000442000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_VaultSchemaGUID
behavioral1/memory/2640-39-0x0000000000400000-0x0000000000442000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_VaultSchemaGUID
behavioral1/memory/2640-41-0x0000000000400000-0x0000000000442000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_VaultSchemaGUID
behavioral1/memory/2640-48-0x0000000004AE0000-0x0000000004B20000-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 6 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2640-26-0x0000000000400000-0x0000000000442000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_References_Confidential_Data_Store
behavioral1/memory/2640-28-0x0000000000400000-0x0000000000442000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_References_Confidential_Data_Store
behavioral1/memory/2640-36-0x0000000000400000-0x0000000000442000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_References_Confidential_Data_Store
behavioral1/memory/2640-39-0x0000000000400000-0x0000000000442000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_References_Confidential_Data_Store
behavioral1/memory/2640-41-0x0000000000400000-0x0000000000442000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_References_Confidential_Data_Store
behavioral1/memory/2640-48-0x0000000004AE0000-0x0000000004B20000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_References_Confidential_Data_Store

Detects executables referencing many email and collaboration clients. Observed in information stealers 6 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2640-26-0x0000000000400000-0x0000000000442000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_References_Messaging_Clients
behavioral1/memory/2640-28-0x0000000000400000-0x0000000000442000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_References_Messaging_Clients
behavioral1/memory/2640-36-0x0000000000400000-0x0000000000442000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_References_Messaging_Clients
behavioral1/memory/2640-39-0x0000000000400000-0x0000000000442000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_References_Messaging_Clients
behavioral1/memory/2640-41-0x0000000000400000-0x0000000000442000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_References_Messaging_Clients
behavioral1/memory/2640-48-0x0000000004AE0000-0x0000000004B20000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_References_Messaging_Clients

Detects executables referencing many file transfer clients. Observed in information stealers 6 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2640-26-0x0000000000400000-0x0000000000442000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_Referenfces_File_Transfer_Clients
behavioral1/memory/2640-28-0x0000000000400000-0x0000000000442000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_Referenfces_File_Transfer_Clients
behavioral1/memory/2640-36-0x0000000000400000-0x0000000000442000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_Referenfces_File_Transfer_Clients
behavioral1/memory/2640-39-0x0000000000400000-0x0000000000442000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_Referenfces_File_Transfer_Clients
behavioral1/memory/2640-41-0x0000000000400000-0x0000000000442000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_Referenfces_File_Transfer_Clients
behavioral1/memory/2640-48-0x0000000004AE0000-0x0000000004B20000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_Referenfces_File_Transfer_Clients

Looks up external IP address via web service 2 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
Suspicious use of SetThreadContext 1 IoCs

Processes:

kYyBuIFRcL6U7Fl.exe

description pid process target process

PID 1968 set thread context of 2640 1968 kYyBuIFRcL6U7Fl.exe RegSvcs.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082
Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
persistence

Scheduled Task/Job
T1053

Processes:

schtasks.exe

pid process

2032 schtasks.exe

flow	ioc
4	api.ipify.org
5	api.ipify.org

description	pid	process	target process
PID 1968 set thread context of 2640	1968	kYyBuIFRcL6U7Fl.exe	RegSvcs.exe

pid	process
2032	schtasks.exe

Suspicious behavior: EnumeratesProcesses 9 IoCs

Processes:

kYyBuIFRcL6U7Fl.exepowershell.exepowershell.exeRegSvcs.exe

pid	process
1968	kYyBuIFRcL6U7Fl.exe
1968	kYyBuIFRcL6U7Fl.exe
1968	kYyBuIFRcL6U7Fl.exe
2980	powershell.exe
2876	powershell.exe
1968	kYyBuIFRcL6U7Fl.exe
1968	kYyBuIFRcL6U7Fl.exe
2640	RegSvcs.exe
2640	RegSvcs.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

Processes:

kYyBuIFRcL6U7Fl.exepowershell.exepowershell.exeRegSvcs.exe

description	pid	process
Token: SeDebugPrivilege	1968	kYyBuIFRcL6U7Fl.exe
Token: SeDebugPrivilege	2980	powershell.exe
Token: SeDebugPrivilege	2876	powershell.exe
Token: SeDebugPrivilege	2640	RegSvcs.exe

Suspicious use of WriteProcessMemory 31 IoCs

Processes:

kYyBuIFRcL6U7Fl.exe

description	pid	process	target process
PID 1968 wrote to memory of 2980	1968	kYyBuIFRcL6U7Fl.exe	powershell.exe
PID 1968 wrote to memory of 2980	1968	kYyBuIFRcL6U7Fl.exe	powershell.exe
PID 1968 wrote to memory of 2980	1968	kYyBuIFRcL6U7Fl.exe	powershell.exe
PID 1968 wrote to memory of 2980	1968	kYyBuIFRcL6U7Fl.exe	powershell.exe
PID 1968 wrote to memory of 2876	1968	kYyBuIFRcL6U7Fl.exe	powershell.exe
PID 1968 wrote to memory of 2876	1968	kYyBuIFRcL6U7Fl.exe	powershell.exe
PID 1968 wrote to memory of 2876	1968	kYyBuIFRcL6U7Fl.exe	powershell.exe
PID 1968 wrote to memory of 2876	1968	kYyBuIFRcL6U7Fl.exe	powershell.exe
PID 1968 wrote to memory of 2032	1968	kYyBuIFRcL6U7Fl.exe	schtasks.exe
PID 1968 wrote to memory of 2032	1968	kYyBuIFRcL6U7Fl.exe	schtasks.exe
PID 1968 wrote to memory of 2032	1968	kYyBuIFRcL6U7Fl.exe	schtasks.exe
PID 1968 wrote to memory of 2032	1968	kYyBuIFRcL6U7Fl.exe	schtasks.exe
PID 1968 wrote to memory of 2160	1968	kYyBuIFRcL6U7Fl.exe	RegSvcs.exe
PID 1968 wrote to memory of 2160	1968	kYyBuIFRcL6U7Fl.exe	RegSvcs.exe
PID 1968 wrote to memory of 2160	1968	kYyBuIFRcL6U7Fl.exe	RegSvcs.exe
PID 1968 wrote to memory of 2160	1968	kYyBuIFRcL6U7Fl.exe	RegSvcs.exe
PID 1968 wrote to memory of 2160	1968	kYyBuIFRcL6U7Fl.exe	RegSvcs.exe
PID 1968 wrote to memory of 2160	1968	kYyBuIFRcL6U7Fl.exe	RegSvcs.exe
PID 1968 wrote to memory of 2160	1968	kYyBuIFRcL6U7Fl.exe	RegSvcs.exe
PID 1968 wrote to memory of 2640	1968	kYyBuIFRcL6U7Fl.exe	RegSvcs.exe
PID 1968 wrote to memory of 2640	1968	kYyBuIFRcL6U7Fl.exe	RegSvcs.exe
PID 1968 wrote to memory of 2640	1968	kYyBuIFRcL6U7Fl.exe	RegSvcs.exe
PID 1968 wrote to memory of 2640	1968	kYyBuIFRcL6U7Fl.exe	RegSvcs.exe
PID 1968 wrote to memory of 2640	1968	kYyBuIFRcL6U7Fl.exe	RegSvcs.exe
PID 1968 wrote to memory of 2640	1968	kYyBuIFRcL6U7Fl.exe	RegSvcs.exe
PID 1968 wrote to memory of 2640	1968	kYyBuIFRcL6U7Fl.exe	RegSvcs.exe
PID 1968 wrote to memory of 2640	1968	kYyBuIFRcL6U7Fl.exe	RegSvcs.exe
PID 1968 wrote to memory of 2640	1968	kYyBuIFRcL6U7Fl.exe	RegSvcs.exe
PID 1968 wrote to memory of 2640	1968	kYyBuIFRcL6U7Fl.exe	RegSvcs.exe
PID 1968 wrote to memory of 2640	1968	kYyBuIFRcL6U7Fl.exe	RegSvcs.exe
PID 1968 wrote to memory of 2640	1968	kYyBuIFRcL6U7Fl.exe	RegSvcs.exe

C:\Users\Admin\AppData\Local\Temp\kYyBuIFRcL6U7Fl.exe
"C:\Users\Admin\AppData\Local\Temp\kYyBuIFRcL6U7Fl.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1968

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\kYyBuIFRcL6U7Fl.exe"
2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2980

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\UoqhCzdpcgs.exe"
2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2876

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\UoqhCzdpcgs" /XML "C:\Users\Admin\AppData\Local\Temp\tmpD4EB.tmp"
2⤵
- Creates scheduled task(s)
PID:2032

C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
2⤵
PID:2160

C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2640

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

1

T1053

Persistence

Scheduled Task/Job

1

T1053

Privilege Escalation

Scheduled Task/Job

1

T1053

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmpD4EB.tmp
Filesize
1KB

MD5
d89ce23d862c7646c6006e2a29badaeb

SHA1
2f63e938440d3c48f1c89c53486dffbe11c8cef9

SHA256
9a0602c6983d3566c70c469fee14574d1d579a60ba81dc5518d2c708757f96d1

SHA512
5e737e84734f27b9fdfb1c25dab4a53b4091d96f8b1e919fe56963d8ef512ef8385484a400ee579b46b2123116bfd91cf0237631b74c26cd6c9403c20fdceb35

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\d93f411851d7c929.customDestinations-ms
Filesize
7KB

MD5
0ba3d7a45d259cda4736100b435387a7

SHA1
ea64891465be239595cfb4ad008962ae08d33ed1

SHA256
375383cf33e4ac5343105aaab038957bacfe453c0360545dcc7103f3afd7176f

SHA512
83ec020fe650ddf51723815e7fb0ac0aafbb3cfce5c5fdfdd06921e9a81a31335ee21e13c0ebf1b9b493138d6652d3f3ff6cbfcc6cc6a51c484182bcddce06e5

Download Submit
memory/1968-42-0x0000000074D20000-0x000000007540E000-memory.dmp

Filesize
6.9MB

Download
memory/1968-1-0x0000000074D20000-0x000000007540E000-memory.dmp

Filesize
6.9MB

Download
memory/1968-2-0x00000000048D0000-0x0000000004910000-memory.dmp

Filesize
256KB

Download
memory/1968-3-0x0000000000500000-0x0000000000512000-memory.dmp

Filesize
72KB

Download
memory/1968-4-0x0000000000510000-0x000000000051C000-memory.dmp

Filesize
48KB

Download
memory/1968-5-0x0000000005290000-0x0000000005312000-memory.dmp

Filesize
520KB

Download
memory/1968-0-0x00000000008B0000-0x000000000094E000-memory.dmp

Filesize
632KB

Download
memory/2640-48-0x0000000004AE0000-0x0000000004B20000-memory.dmp

Filesize
256KB

Download
memory/2640-36-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/2640-23-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/2640-47-0x0000000074D20000-0x000000007540E000-memory.dmp

Filesize
6.9MB

Download
memory/2640-44-0x0000000004AE0000-0x0000000004B20000-memory.dmp

Filesize
256KB

Download
memory/2640-43-0x0000000074D20000-0x000000007540E000-memory.dmp

Filesize
6.9MB

Download
memory/2640-26-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/2640-19-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/2640-28-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/2640-41-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/2640-32-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2640-39-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/2876-18-0x000000006E7F0000-0x000000006ED9B000-memory.dmp

Filesize
5.7MB

Download
memory/2876-37-0x00000000023A0000-0x00000000023E0000-memory.dmp

Filesize
256KB

Download
memory/2876-31-0x00000000023A0000-0x00000000023E0000-memory.dmp

Filesize
256KB

Download
memory/2876-27-0x000000006E7F0000-0x000000006ED9B000-memory.dmp

Filesize
5.7MB

Download
memory/2876-24-0x000000006E7F0000-0x000000006ED9B000-memory.dmp

Filesize
5.7MB

Download
memory/2876-46-0x000000006E7F0000-0x000000006ED9B000-memory.dmp

Filesize
5.7MB

Download
memory/2980-35-0x0000000002430000-0x0000000002470000-memory.dmp

Filesize
256KB

Download
memory/2980-33-0x0000000002430000-0x0000000002470000-memory.dmp

Filesize
256KB

Download
memory/2980-29-0x000000006E7F0000-0x000000006ED9B000-memory.dmp

Filesize
5.7MB

Download
memory/2980-45-0x000000006E7F0000-0x000000006ED9B000-memory.dmp

Filesize
5.7MB

Download
memory/2980-22-0x0000000002430000-0x0000000002470000-memory.dmp

Filesize
256KB

Download
memory/2980-20-0x000000006E7F0000-0x000000006ED9B000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads