agenttesla | d920f54205824893b67562d371ea565dc2ae8f1dc02b6e2e079ff0ec246563e6

Analysis

max time kernel
149s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
17/05/2024, 02:00

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General

Target

d920f54205824893b67562d371ea565dc2ae8f1dc02b6e2e079ff0ec246563e6.exe
Size

66KB
MD5

40d4f9dce0a4c36281ac0fd748623f22
SHA1

b4ac62a557b720a82a89f279aebf062247ed686b
SHA256

d920f54205824893b67562d371ea565dc2ae8f1dc02b6e2e079ff0ec246563e6
SHA512

3bbe8979e950d3d4810b762f18496d91f3a867300d65e638d268030255f1f805f7479a44903f29d7382390a0462872f9af259b8ff5177552f143c8dc20b80705
SSDEEP

1536:uclZk2SFjwIcry68JT3KDJipMJQ2v83hGH:uclCw83JzK9kMJQ2vZH

Score

10^/10

agenttesla purelogstealer keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
66.29.151.236
Port:
587
Username:
[email protected]
Password:
d9GOyTceXsMT
Email To:
[email protected]

Signatures

AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
keylogger trojan stealer spyware agenttesla
PureLog Stealer
PureLog Stealer is an infostealer written in C#.
stealer purelogstealer

PureLog Stealer payload 2 IoCs

resource	yara_rule
behavioral2/files/0x0008000000023396-4893.dat	family_purelog_stealer
behavioral2/memory/3476-4900-0x00000000000D0000-0x00000000000EA000-memory.dmp	family_purelog_stealer

Detect packed .NET executables. Mostly AgentTeslaV4. 1 IoCs

resource	yara_rule
behavioral2/memory/1124-4909-0x0000000000800000-0x0000000000840000-memory.dmp	INDICATOR_EXE_Packed_GEN01

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

resource	yara_rule
behavioral2/memory/1124-4909-0x0000000000800000-0x0000000000840000-memory.dmp	INDICATOR_SUSPICIOUS_Binary_References_Browsers

Detects executables packed with SmartAssembly 1 IoCs

resource	yara_rule
behavioral2/memory/4088-1-0x0000000000750000-0x0000000000762000-memory.dmp	INDICATOR_EXE_Packed_SmartAssembly

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

resource	yara_rule
behavioral2/memory/1124-4909-0x0000000000800000-0x0000000000840000-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

resource	yara_rule
behavioral2/memory/1124-4909-0x0000000000800000-0x0000000000840000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_References_Confidential_Data_Store

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

resource	yara_rule
behavioral2/memory/1124-4909-0x0000000000800000-0x0000000000840000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_References_Messaging_Clients

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

resource	yara_rule
behavioral2/memory/1124-4909-0x0000000000800000-0x0000000000840000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_Referenfces_File_Transfer_Clients

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000\Control Panel\International\Geo\Nation	d920f54205824893b67562d371ea565dc2ae8f1dc02b6e2e079ff0ec246563e6.exe

Executes dropped EXE 1 IoCs

pid	Process
3476	Mrmjzj.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

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\uvef = "C:\\Users\\Admin\\AppData\\Roaming\\uvef.exe"	d920f54205824893b67562d371ea565dc2ae8f1dc02b6e2e079ff0ec246563e6.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\uvef = "C:\\Users\\Admin\\AppData\\Roaming\\uvef.exe"	Mrmjzj.exe

Looks up external IP address via web service 2 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
31	api.ipify.org
32	api.ipify.org

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 4088 set thread context of 1124	4088	d920f54205824893b67562d371ea565dc2ae8f1dc02b6e2e079ff0ec246563e6.exe	96
PID 3476 set thread context of 4296	3476	Mrmjzj.exe	99

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

System Information Discovery
T1082

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
4296	RegAsm.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1124	RegAsm.exe
1124	RegAsm.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeDebugPrivilege	4088	d920f54205824893b67562d371ea565dc2ae8f1dc02b6e2e079ff0ec246563e6.exe
Token: SeDebugPrivilege	4088	d920f54205824893b67562d371ea565dc2ae8f1dc02b6e2e079ff0ec246563e6.exe
Token: SeDebugPrivilege	3476	Mrmjzj.exe
Token: SeDebugPrivilege	1124	RegAsm.exe
Token: SeDebugPrivilege	3476	Mrmjzj.exe
Token: SeDebugPrivilege	4296	RegAsm.exe

Suspicious use of WriteProcessMemory 19 IoCs

description	pid	Process	procid_target
PID 4088 wrote to memory of 3476	4088	d920f54205824893b67562d371ea565dc2ae8f1dc02b6e2e079ff0ec246563e6.exe	95
PID 4088 wrote to memory of 3476	4088	d920f54205824893b67562d371ea565dc2ae8f1dc02b6e2e079ff0ec246563e6.exe	95
PID 4088 wrote to memory of 3476	4088	d920f54205824893b67562d371ea565dc2ae8f1dc02b6e2e079ff0ec246563e6.exe	95
PID 4088 wrote to memory of 1124	4088	d920f54205824893b67562d371ea565dc2ae8f1dc02b6e2e079ff0ec246563e6.exe	96
PID 4088 wrote to memory of 1124	4088	d920f54205824893b67562d371ea565dc2ae8f1dc02b6e2e079ff0ec246563e6.exe	96
PID 4088 wrote to memory of 1124	4088	d920f54205824893b67562d371ea565dc2ae8f1dc02b6e2e079ff0ec246563e6.exe	96
PID 4088 wrote to memory of 1124	4088	d920f54205824893b67562d371ea565dc2ae8f1dc02b6e2e079ff0ec246563e6.exe	96
PID 4088 wrote to memory of 1124	4088	d920f54205824893b67562d371ea565dc2ae8f1dc02b6e2e079ff0ec246563e6.exe	96
PID 4088 wrote to memory of 1124	4088	d920f54205824893b67562d371ea565dc2ae8f1dc02b6e2e079ff0ec246563e6.exe	96
PID 4088 wrote to memory of 1124	4088	d920f54205824893b67562d371ea565dc2ae8f1dc02b6e2e079ff0ec246563e6.exe	96
PID 4088 wrote to memory of 1124	4088	d920f54205824893b67562d371ea565dc2ae8f1dc02b6e2e079ff0ec246563e6.exe	96
PID 3476 wrote to memory of 4296	3476	Mrmjzj.exe	99
PID 3476 wrote to memory of 4296	3476	Mrmjzj.exe	99
PID 3476 wrote to memory of 4296	3476	Mrmjzj.exe	99
PID 3476 wrote to memory of 4296	3476	Mrmjzj.exe	99
PID 3476 wrote to memory of 4296	3476	Mrmjzj.exe	99
PID 3476 wrote to memory of 4296	3476	Mrmjzj.exe	99
PID 3476 wrote to memory of 4296	3476	Mrmjzj.exe	99
PID 3476 wrote to memory of 4296	3476	Mrmjzj.exe	99

C:\Users\Admin\AppData\Local\Temp\d920f54205824893b67562d371ea565dc2ae8f1dc02b6e2e079ff0ec246563e6.exe
"C:\Users\Admin\AppData\Local\Temp\d920f54205824893b67562d371ea565dc2ae8f1dc02b6e2e079ff0ec246563e6.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4088
- C:\Users\Admin\AppData\Local\Temp\Mrmjzj.exe
  "C:\Users\Admin\AppData\Local\Temp\Mrmjzj.exe"
  2⤵
  - Executes dropped EXE
  - Adds Run key to start application
  - Suspicious use of SetThreadContext
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:3476
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
    3⤵
    - Suspicious behavior: AddClipboardFormatListener
    - Suspicious use of AdjustPrivilegeToken
    PID:4296
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1124

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Credentials in Registry

T1552.002

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\Mrmjzj.exe

Filesize
93KB

MD5
93e85d15ef93ddf8ac964f84d9bec664

SHA1
e3d58cca51afd2449a11a8a18c5a0f871dbca59c

SHA256
816bb9cdaa18ffba5dbcedf69298718caac8a4ff6c674300a9299d0584a236c9

SHA512
acd703192f69af97cd6d288ad43b3b6dc6e711c7747f25af05a0f0fe3619b5c503857d0f6dbe93b4d5dd411b8f0a51cf25b8596396c756cf7f3faed57b00c49c

Download Submit
memory/1124-4910-0x0000000004E20000-0x0000000004E86000-memory.dmp

Filesize
408KB

Download
memory/1124-10657-0x0000000074F00000-0x00000000756B0000-memory.dmp

Filesize
7.7MB

Download
memory/1124-4908-0x0000000074F00000-0x00000000756B0000-memory.dmp

Filesize
7.7MB

Download
memory/1124-5755-0x00000000062F0000-0x00000000062FA000-memory.dmp

Filesize
40KB

Download
memory/1124-5688-0x0000000006280000-0x00000000062D0000-memory.dmp

Filesize
320KB

Download
memory/1124-4909-0x0000000000800000-0x0000000000840000-memory.dmp

Filesize
256KB

Download
memory/1124-4911-0x0000000074F00000-0x00000000756B0000-memory.dmp

Filesize
7.7MB

Download
memory/3476-9795-0x0000000005990000-0x0000000005A92000-memory.dmp

Filesize
1.0MB

Download
memory/3476-4912-0x0000000005AD0000-0x0000000005D96000-memory.dmp

Filesize
2.8MB

Download
memory/3476-9801-0x0000000074F00000-0x00000000756B0000-memory.dmp

Filesize
7.7MB

Download
memory/3476-4906-0x00000000008C0000-0x00000000008C6000-memory.dmp

Filesize
24KB

Download
memory/3476-4903-0x0000000074F00000-0x00000000756B0000-memory.dmp

Filesize
7.7MB

Download
memory/3476-4900-0x00000000000D0000-0x00000000000EA000-memory.dmp

Filesize
104KB

Download
memory/4088-27-0x0000000007350000-0x0000000007586000-memory.dmp

Filesize
2.2MB

Download
memory/4088-67-0x0000000007350000-0x0000000007586000-memory.dmp

Filesize
2.2MB

Download
memory/4088-17-0x0000000007350000-0x0000000007586000-memory.dmp

Filesize
2.2MB

Download
memory/4088-13-0x0000000007350000-0x0000000007586000-memory.dmp

Filesize
2.2MB

Download
memory/4088-11-0x0000000007350000-0x0000000007586000-memory.dmp

Filesize
2.2MB

Download
memory/4088-7-0x0000000007350000-0x0000000007586000-memory.dmp

Filesize
2.2MB

Download
memory/4088-6-0x0000000007350000-0x0000000007586000-memory.dmp

Filesize
2.2MB

Download
memory/4088-59-0x0000000007350000-0x0000000007586000-memory.dmp

Filesize
2.2MB

Download
memory/4088-65-0x0000000007350000-0x0000000007586000-memory.dmp

Filesize
2.2MB

Download
memory/4088-63-0x0000000007350000-0x0000000007586000-memory.dmp

Filesize
2.2MB

Download
memory/4088-61-0x0000000007350000-0x0000000007586000-memory.dmp

Filesize
2.2MB

Download
memory/4088-57-0x0000000007350000-0x0000000007586000-memory.dmp

Filesize
2.2MB

Download
memory/4088-55-0x0000000007350000-0x0000000007586000-memory.dmp

Filesize
2.2MB

Download
memory/4088-53-0x0000000007350000-0x0000000007586000-memory.dmp

Filesize
2.2MB

Download
memory/4088-51-0x0000000007350000-0x0000000007586000-memory.dmp

Filesize
2.2MB

Download
memory/4088-49-0x0000000007350000-0x0000000007586000-memory.dmp

Filesize
2.2MB

Download
memory/4088-47-0x0000000007350000-0x0000000007586000-memory.dmp

Filesize
2.2MB

Download
memory/4088-45-0x0000000007350000-0x0000000007586000-memory.dmp

Filesize
2.2MB

Download
memory/4088-43-0x0000000007350000-0x0000000007586000-memory.dmp

Filesize
2.2MB

Download
memory/4088-41-0x0000000007350000-0x0000000007586000-memory.dmp

Filesize
2.2MB

Download
memory/4088-39-0x0000000007350000-0x0000000007586000-memory.dmp

Filesize
2.2MB

Download
memory/4088-37-0x0000000007350000-0x0000000007586000-memory.dmp

Filesize
2.2MB

Download
memory/4088-35-0x0000000007350000-0x0000000007586000-memory.dmp

Filesize
2.2MB

Download
memory/4088-0-0x0000000074F0E000-0x0000000074F0F000-memory.dmp

Filesize
4KB

Download
memory/4088-69-0x0000000007350000-0x0000000007586000-memory.dmp

Filesize
2.2MB

Download
memory/4088-4886-0x0000000074F00000-0x00000000756B0000-memory.dmp

Filesize
7.7MB

Download
memory/4088-4888-0x0000000005B60000-0x0000000005BAC000-memory.dmp

Filesize
304KB

Download
memory/4088-4887-0x0000000005AB0000-0x0000000005B28000-memory.dmp

Filesize
480KB

Download
memory/4088-19-0x0000000007350000-0x0000000007586000-memory.dmp

Filesize
2.2MB

Download
memory/4088-33-0x0000000007350000-0x0000000007586000-memory.dmp

Filesize
2.2MB

Download
memory/4088-4901-0x0000000005E90000-0x0000000005EE4000-memory.dmp

Filesize
336KB

Download
memory/4088-23-0x0000000007350000-0x0000000007586000-memory.dmp

Filesize
2.2MB

Download
memory/4088-25-0x0000000007350000-0x0000000007586000-memory.dmp

Filesize
2.2MB

Download
memory/4088-4907-0x0000000074F00000-0x00000000756B0000-memory.dmp

Filesize
7.7MB

Download
memory/4088-29-0x0000000007350000-0x0000000007586000-memory.dmp

Filesize
2.2MB

Download
memory/4088-31-0x0000000007350000-0x0000000007586000-memory.dmp

Filesize
2.2MB

Download
memory/4088-21-0x0000000007350000-0x0000000007586000-memory.dmp

Filesize
2.2MB

Download
memory/4088-15-0x0000000007350000-0x0000000007586000-memory.dmp

Filesize
2.2MB

Download
memory/4088-9-0x0000000007350000-0x0000000007586000-memory.dmp

Filesize
2.2MB

Download
memory/4088-5-0x0000000007630000-0x00000000076C2000-memory.dmp

Filesize
584KB

Download
memory/4088-4-0x0000000007B40000-0x00000000080E4000-memory.dmp

Filesize
5.6MB

Download
memory/4088-3-0x0000000007350000-0x000000000758C000-memory.dmp

Filesize
2.2MB

Download
memory/4088-2-0x0000000074F00000-0x00000000756B0000-memory.dmp

Filesize
7.7MB

Download
memory/4088-1-0x0000000000750000-0x0000000000762000-memory.dmp

Filesize
72KB

Download
memory/4296-9802-0x0000000004C30000-0x0000000004CF6000-memory.dmp

Filesize
792KB

Download
memory/4296-10655-0x00000000050A0000-0x00000000050A8000-memory.dmp

Filesize
32KB

Download
memory/4296-10656-0x00000000050B0000-0x0000000005106000-memory.dmp

Filesize
344KB

Download
memory/4296-9800-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download