agenttesla | 88cf42a6c3e0ee64dc8be4743b5427fb74d26c30964415e5c9921f80063b8107

General

Target

KhT.scr
Size

687KB
MD5

62ed0ee9372f04bd637e3995624dbc0c
SHA1

96e4d381325b9c0a0581993529baf0cb38050faf
SHA256

17f1c3567b5334eca6e41e7a341faa999fdb22f64004a185874e23dd4a43d06d
SHA512

7e3c79a487e8d472947aab1050db828ae7fe65ae1af049c00dfe7cd1b4668313665dd6380a32b7465a16da292e8270e53c35586ea39dcef3ec50ddc8a1bd2e1a
SSDEEP

12288:4/K0YOwqOpWXqqfNg3Hsgtwmq+MzaMl7+fpfKIIP9HJYxbd:DO7rXHNg3HsgtwD+MzplCfxKzHJI

Score

10^/10

agenttesla keylogger spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
mail.sigmamotorspk.com
Port:
587
Username:
[email protected]
Password:
zarbeazab1234
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/2088-19-0x0000000000400000-0x0000000000440000-memory.dmp	INDICATOR_EXE_Packed_GEN01
behavioral1/memory/2088-21-0x0000000000400000-0x0000000000440000-memory.dmp	INDICATOR_EXE_Packed_GEN01
behavioral1/memory/2088-25-0x0000000000400000-0x0000000000440000-memory.dmp	INDICATOR_EXE_Packed_GEN01
behavioral1/memory/2088-27-0x0000000000400000-0x0000000000440000-memory.dmp	INDICATOR_EXE_Packed_GEN01
behavioral1/memory/2088-30-0x0000000000400000-0x0000000000440000-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/2088-19-0x0000000000400000-0x0000000000440000-memory.dmp	INDICATOR_SUSPICIOUS_Binary_References_Browsers
behavioral1/memory/2088-21-0x0000000000400000-0x0000000000440000-memory.dmp	INDICATOR_SUSPICIOUS_Binary_References_Browsers
behavioral1/memory/2088-25-0x0000000000400000-0x0000000000440000-memory.dmp	INDICATOR_SUSPICIOUS_Binary_References_Browsers
behavioral1/memory/2088-27-0x0000000000400000-0x0000000000440000-memory.dmp	INDICATOR_SUSPICIOUS_Binary_References_Browsers
behavioral1/memory/2088-30-0x0000000000400000-0x0000000000440000-memory.dmp	INDICATOR_SUSPICIOUS_Binary_References_Browsers

Detects executables packed with SmartAssembly 1 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2332-4-0x00000000004E0000-0x00000000004EC000-memory.dmp	INDICATOR_EXE_Packed_SmartAssembly

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

Processes:

resource	yara_rule
behavioral1/memory/2088-19-0x0000000000400000-0x0000000000440000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_VaultSchemaGUID
behavioral1/memory/2088-21-0x0000000000400000-0x0000000000440000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_VaultSchemaGUID
behavioral1/memory/2088-25-0x0000000000400000-0x0000000000440000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_VaultSchemaGUID
behavioral1/memory/2088-27-0x0000000000400000-0x0000000000440000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_VaultSchemaGUID
behavioral1/memory/2088-30-0x0000000000400000-0x0000000000440000-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 5 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2088-19-0x0000000000400000-0x0000000000440000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_References_Confidential_Data_Store
behavioral1/memory/2088-21-0x0000000000400000-0x0000000000440000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_References_Confidential_Data_Store
behavioral1/memory/2088-25-0x0000000000400000-0x0000000000440000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_References_Confidential_Data_Store
behavioral1/memory/2088-27-0x0000000000400000-0x0000000000440000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_References_Confidential_Data_Store
behavioral1/memory/2088-30-0x0000000000400000-0x0000000000440000-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/2088-19-0x0000000000400000-0x0000000000440000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_References_Messaging_Clients
behavioral1/memory/2088-21-0x0000000000400000-0x0000000000440000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_References_Messaging_Clients
behavioral1/memory/2088-25-0x0000000000400000-0x0000000000440000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_References_Messaging_Clients
behavioral1/memory/2088-27-0x0000000000400000-0x0000000000440000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_References_Messaging_Clients
behavioral1/memory/2088-30-0x0000000000400000-0x0000000000440000-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/2088-19-0x0000000000400000-0x0000000000440000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_Referenfces_File_Transfer_Clients
behavioral1/memory/2088-21-0x0000000000400000-0x0000000000440000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_Referenfces_File_Transfer_Clients
behavioral1/memory/2088-25-0x0000000000400000-0x0000000000440000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_Referenfces_File_Transfer_Clients
behavioral1/memory/2088-27-0x0000000000400000-0x0000000000440000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_Referenfces_File_Transfer_Clients
behavioral1/memory/2088-30-0x0000000000400000-0x0000000000440000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_Referenfces_File_Transfer_Clients

Suspicious use of SetThreadContext 1 IoCs

Processes:

KhT.scr

description pid process target process

PID 2332 set thread context of 2088 2332 KhT.scr 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

2652 schtasks.exe

description	pid	process	target process
PID 2332 set thread context of 2088	2332	KhT.scr	RegSvcs.exe

pid	process
2652	schtasks.exe

Suspicious behavior: EnumeratesProcesses 13 IoCs

Processes:

KhT.scrRegSvcs.exepowershell.exe

pid	process
2332	KhT.scr
2332	KhT.scr
2332	KhT.scr
2332	KhT.scr
2332	KhT.scr
2332	KhT.scr
2332	KhT.scr
2332	KhT.scr
2332	KhT.scr
2332	KhT.scr
2088	RegSvcs.exe
2088	RegSvcs.exe
2832	powershell.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

KhT.scrRegSvcs.exepowershell.exe

description pid process

Token: SeDebugPrivilege 2332 KhT.scr
Token: SeDebugPrivilege 2088 RegSvcs.exe
Token: SeDebugPrivilege 2832 powershell.exe

description	pid	process
Token: SeDebugPrivilege	2332	KhT.scr
Token: SeDebugPrivilege	2088	RegSvcs.exe
Token: SeDebugPrivilege	2832	powershell.exe

Suspicious use of WriteProcessMemory 20 IoCs

Processes:

KhT.scr

description	pid	process	target process
PID 2332 wrote to memory of 2832	2332	KhT.scr	powershell.exe
PID 2332 wrote to memory of 2832	2332	KhT.scr	powershell.exe
PID 2332 wrote to memory of 2832	2332	KhT.scr	powershell.exe
PID 2332 wrote to memory of 2832	2332	KhT.scr	powershell.exe
PID 2332 wrote to memory of 2652	2332	KhT.scr	schtasks.exe
PID 2332 wrote to memory of 2652	2332	KhT.scr	schtasks.exe
PID 2332 wrote to memory of 2652	2332	KhT.scr	schtasks.exe
PID 2332 wrote to memory of 2652	2332	KhT.scr	schtasks.exe
PID 2332 wrote to memory of 2088	2332	KhT.scr	RegSvcs.exe
PID 2332 wrote to memory of 2088	2332	KhT.scr	RegSvcs.exe
PID 2332 wrote to memory of 2088	2332	KhT.scr	RegSvcs.exe
PID 2332 wrote to memory of 2088	2332	KhT.scr	RegSvcs.exe
PID 2332 wrote to memory of 2088	2332	KhT.scr	RegSvcs.exe
PID 2332 wrote to memory of 2088	2332	KhT.scr	RegSvcs.exe
PID 2332 wrote to memory of 2088	2332	KhT.scr	RegSvcs.exe
PID 2332 wrote to memory of 2088	2332	KhT.scr	RegSvcs.exe
PID 2332 wrote to memory of 2088	2332	KhT.scr	RegSvcs.exe
PID 2332 wrote to memory of 2088	2332	KhT.scr	RegSvcs.exe
PID 2332 wrote to memory of 2088	2332	KhT.scr	RegSvcs.exe
PID 2332 wrote to memory of 2088	2332	KhT.scr	RegSvcs.exe

C:\Users\Admin\AppData\Local\Temp\KhT.scr
"C:\Users\Admin\AppData\Local\Temp\KhT.scr" /S
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2332

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\zTmBkRpHGbA.exe"
2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2832

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\zTmBkRpHGbA" /XML "C:\Users\Admin\AppData\Local\Temp\tmpD4CC.tmp"
2⤵
- Creates scheduled task(s)
PID:2652

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:2088

MITRE ATT&CK Matrix ATT&CK v13

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

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmpD4CC.tmp
Filesize
1KB

MD5
e8ca09d30c187811af2530147617c4d3

SHA1
1dd20e5fc754a8eebd38b749cc529d256b0605a3

SHA256
19a4b734f6b20d24fd41e1ae0e1d86994aaddae661e789cdc38a6f6d4e9751f7

SHA512
4644d82b0c695d61760a29deb1028ed4a71d809f0ecf4ef6e814c5668af55b6bfed6e94b786ab242700b332522f3d19a1c5876190d33e16b7e02121e23b20357

Download Submit
memory/2088-19-0x0000000000400000-0x0000000000440000-memory.dmp

Filesize
256KB

Download
memory/2088-38-0x00000000736A0000-0x0000000073D8E000-memory.dmp

Filesize
6.9MB

Download
memory/2088-35-0x00000000736A0000-0x0000000073D8E000-memory.dmp

Filesize
6.9MB

Download
memory/2088-30-0x0000000000400000-0x0000000000440000-memory.dmp

Filesize
256KB

Download
memory/2088-27-0x0000000000400000-0x0000000000440000-memory.dmp

Filesize
256KB

Download
memory/2088-25-0x0000000000400000-0x0000000000440000-memory.dmp

Filesize
256KB

Download
memory/2088-23-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2088-21-0x0000000000400000-0x0000000000440000-memory.dmp

Filesize
256KB

Download
memory/2088-15-0x0000000000400000-0x0000000000440000-memory.dmp

Filesize
256KB

Download
memory/2088-17-0x0000000000400000-0x0000000000440000-memory.dmp

Filesize
256KB

Download
memory/2332-6-0x0000000074930000-0x000000007501E000-memory.dmp

Filesize
6.9MB

Download
memory/2332-2-0x0000000000A40000-0x0000000000A80000-memory.dmp

Filesize
256KB

Download
memory/2332-0-0x0000000001090000-0x0000000001142000-memory.dmp

Filesize
712KB

Download
memory/2332-5-0x0000000005210000-0x0000000005292000-memory.dmp

Filesize
520KB

Download
memory/2332-4-0x00000000004E0000-0x00000000004EC000-memory.dmp

Filesize
48KB

Download
memory/2332-28-0x0000000074930000-0x000000007501E000-memory.dmp

Filesize
6.9MB

Download
memory/2332-3-0x0000000000500000-0x000000000051A000-memory.dmp

Filesize
104KB

Download
memory/2332-12-0x0000000000A40000-0x0000000000A80000-memory.dmp

Filesize
256KB

Download
memory/2332-1-0x0000000074930000-0x000000007501E000-memory.dmp

Filesize
6.9MB

Download
memory/2832-31-0x000000006EF10000-0x000000006F4BB000-memory.dmp

Filesize
5.7MB

Download
memory/2832-34-0x0000000002350000-0x0000000002390000-memory.dmp

Filesize
256KB

Download
memory/2832-33-0x0000000002350000-0x0000000002390000-memory.dmp

Filesize
256KB

Download
memory/2832-36-0x0000000002350000-0x0000000002390000-memory.dmp

Filesize
256KB

Download
memory/2832-37-0x000000006EF10000-0x000000006F4BB000-memory.dmp

Filesize
5.7MB

Download
memory/2832-32-0x000000006EF10000-0x000000006F4BB000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

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Downloads