agenttesla | 71609c370ed4d3d62069401d753b937faf2dc66c0003409999946f5eb1046816

Analysis

max time kernel
147s
max time network
120s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
10-10-2024 13:20

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General

Target

300f3f1f1a66b1e440cbdc4efd14e2ef_JaffaCakes118.exe
Size

802KB
MD5

300f3f1f1a66b1e440cbdc4efd14e2ef
SHA1

8e1043d8c4b2315fba6d8a9692846f8791c22436
SHA256

71609c370ed4d3d62069401d753b937faf2dc66c0003409999946f5eb1046816
SHA512

a176a7f2d87f8c77b72ad484f315af203502829ddbdaa2d24fe48d656bf65b3166f2cb452067e1b0ef8b4aaa3fa7a4daf32eee65a1b434e44a438e5b1c0c452e
SSDEEP

12288:tt0Q5JEq/y6INX6LRgU7e9OmunzkiL3TJjcKhX3ak0xN:/0kGq/wKgDO3QMJjcKhHaj

Score

10^/10

agenttesla collection credential_access defense_evasion discovery keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
mail.karanex.com
Port:
587
Username:
[email protected]
Password:
roz%KtT3

Signatures

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

Modifies WinLogon for persistence 2 TTPs 1 IoCs

persistence

Winlogon Helper DLL

T1547.004

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe,C:\\Users\\Admin\\AppData\\Roaming\\MAINPROC.exe,"	reg.exe

AgentTesla payload 1 IoCs

resource	yara_rule
behavioral2/memory/2124-32-0x0000000000400000-0x000000000043C000-memory.dmp	family_agenttesla

System Binary Proxy Execution: InstallUtil 1 TTPs 2 IoCs

Abuse InstallUtil to proxy execution of malicious code.

defense_evasion

InstallUtil

T1218.004

description	ioc	Process
Key opened	\Registry\Machine\Software\Microsoft\Windows NT\CurrentVersion\AppCompatFlags\Custom\InstallUtil.exe	MAINPROC.exe
File created	C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe	300f3f1f1a66b1e440cbdc4efd14e2ef_JaffaCakes118.exe

Checks computer location settings 2 TTPs 3 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-1-5-21-2878641211-696417878-3864914810-1000\Control Panel\International\Geo\Nation	300f3f1f1a66b1e440cbdc4efd14e2ef_JaffaCakes118.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\Control Panel\International\Geo\Nation	MAINPROC.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\Control Panel\International\Geo\Nation	smss.exe

Executes dropped EXE 4 IoCs

pid	Process
1940	MAINPROC.exe
2124	InstallUtil.exe
5008	smss.exe
812	smss.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 3 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

Credentials from Web Browsers
T1555.003
Unsecured Credentials: Credentials In Files 1 TTPs
Steal credentials from unsecured files.
credential_access stealer

Credentials In Files
T1552.001

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	InstallUtil.exe
Key opened	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	InstallUtil.exe
Key opened	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	InstallUtil.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1940 set thread context of 2124	1940	MAINPROC.exe	92

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

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 7 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	reg.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	MAINPROC.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	InstallUtil.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	smss.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	smss.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	300f3f1f1a66b1e440cbdc4efd14e2ef_JaffaCakes118.exe

Suspicious behavior: EnumeratesProcesses 37 IoCs

pid	Process
2336	300f3f1f1a66b1e440cbdc4efd14e2ef_JaffaCakes118.exe
2336	300f3f1f1a66b1e440cbdc4efd14e2ef_JaffaCakes118.exe
2336	300f3f1f1a66b1e440cbdc4efd14e2ef_JaffaCakes118.exe
2336	300f3f1f1a66b1e440cbdc4efd14e2ef_JaffaCakes118.exe
2336	300f3f1f1a66b1e440cbdc4efd14e2ef_JaffaCakes118.exe
2336	300f3f1f1a66b1e440cbdc4efd14e2ef_JaffaCakes118.exe
2336	300f3f1f1a66b1e440cbdc4efd14e2ef_JaffaCakes118.exe
2336	300f3f1f1a66b1e440cbdc4efd14e2ef_JaffaCakes118.exe
2336	300f3f1f1a66b1e440cbdc4efd14e2ef_JaffaCakes118.exe
2336	300f3f1f1a66b1e440cbdc4efd14e2ef_JaffaCakes118.exe
2336	300f3f1f1a66b1e440cbdc4efd14e2ef_JaffaCakes118.exe
2336	300f3f1f1a66b1e440cbdc4efd14e2ef_JaffaCakes118.exe
2336	300f3f1f1a66b1e440cbdc4efd14e2ef_JaffaCakes118.exe
2336	300f3f1f1a66b1e440cbdc4efd14e2ef_JaffaCakes118.exe
2336	300f3f1f1a66b1e440cbdc4efd14e2ef_JaffaCakes118.exe
2336	300f3f1f1a66b1e440cbdc4efd14e2ef_JaffaCakes118.exe
2336	300f3f1f1a66b1e440cbdc4efd14e2ef_JaffaCakes118.exe
2336	300f3f1f1a66b1e440cbdc4efd14e2ef_JaffaCakes118.exe
2336	300f3f1f1a66b1e440cbdc4efd14e2ef_JaffaCakes118.exe
2336	300f3f1f1a66b1e440cbdc4efd14e2ef_JaffaCakes118.exe
2336	300f3f1f1a66b1e440cbdc4efd14e2ef_JaffaCakes118.exe
2336	300f3f1f1a66b1e440cbdc4efd14e2ef_JaffaCakes118.exe
2336	300f3f1f1a66b1e440cbdc4efd14e2ef_JaffaCakes118.exe
1940	MAINPROC.exe
1940	MAINPROC.exe
1940	MAINPROC.exe
1940	MAINPROC.exe
2124	InstallUtil.exe
2124	InstallUtil.exe
5008	smss.exe
812	smss.exe
812	smss.exe
812	smss.exe
1940	MAINPROC.exe
1940	MAINPROC.exe
1940	MAINPROC.exe
1940	MAINPROC.exe

Suspicious use of AdjustPrivilegeToken 5 IoCs

description	pid	Process
Token: SeDebugPrivilege	2336	300f3f1f1a66b1e440cbdc4efd14e2ef_JaffaCakes118.exe
Token: SeDebugPrivilege	1940	MAINPROC.exe
Token: SeDebugPrivilege	2124	InstallUtil.exe
Token: SeDebugPrivilege	5008	smss.exe
Token: SeDebugPrivilege	812	smss.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2124	InstallUtil.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 2336 wrote to memory of 3616	2336	300f3f1f1a66b1e440cbdc4efd14e2ef_JaffaCakes118.exe	87
PID 2336 wrote to memory of 3616	2336	300f3f1f1a66b1e440cbdc4efd14e2ef_JaffaCakes118.exe	87
PID 2336 wrote to memory of 3616	2336	300f3f1f1a66b1e440cbdc4efd14e2ef_JaffaCakes118.exe	87
PID 3616 wrote to memory of 1516	3616	cmd.exe	89
PID 3616 wrote to memory of 1516	3616	cmd.exe	89
PID 3616 wrote to memory of 1516	3616	cmd.exe	89
PID 2336 wrote to memory of 1940	2336	300f3f1f1a66b1e440cbdc4efd14e2ef_JaffaCakes118.exe	90
PID 2336 wrote to memory of 1940	2336	300f3f1f1a66b1e440cbdc4efd14e2ef_JaffaCakes118.exe	90
PID 2336 wrote to memory of 1940	2336	300f3f1f1a66b1e440cbdc4efd14e2ef_JaffaCakes118.exe	90
PID 1940 wrote to memory of 2124	1940	MAINPROC.exe	92
PID 1940 wrote to memory of 2124	1940	MAINPROC.exe	92
PID 1940 wrote to memory of 2124	1940	MAINPROC.exe	92
PID 1940 wrote to memory of 2124	1940	MAINPROC.exe	92
PID 1940 wrote to memory of 2124	1940	MAINPROC.exe	92
PID 1940 wrote to memory of 2124	1940	MAINPROC.exe	92
PID 1940 wrote to memory of 2124	1940	MAINPROC.exe	92
PID 1940 wrote to memory of 2124	1940	MAINPROC.exe	92
PID 1940 wrote to memory of 5008	1940	MAINPROC.exe	94
PID 1940 wrote to memory of 5008	1940	MAINPROC.exe	94
PID 1940 wrote to memory of 5008	1940	MAINPROC.exe	94
PID 5008 wrote to memory of 812	5008	smss.exe	98
PID 5008 wrote to memory of 812	5008	smss.exe	98
PID 5008 wrote to memory of 812	5008	smss.exe	98

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	InstallUtil.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	InstallUtil.exe

C:\Users\Admin\AppData\Local\Temp\300f3f1f1a66b1e440cbdc4efd14e2ef_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\300f3f1f1a66b1e440cbdc4efd14e2ef_JaffaCakes118.exe"
1⤵
- System Binary Proxy Execution: InstallUtil
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2336
- C:\Windows\SysWOW64\cmd.exe
  "cmd.exe" /c REG ADD "HKCU\Software\Microsoft\Windows NT\CurrentVersion\Winlogon" /f /v "Shell" /t REG_SZ /d "explorer.exe,C:\Users\Admin\AppData\Roaming\MAINPROC.exe,"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:3616
- - C:\Windows\SysWOW64\reg.exe
    REG ADD "HKCU\Software\Microsoft\Windows NT\CurrentVersion\Winlogon" /f /v "Shell" /t REG_SZ /d "explorer.exe,C:\Users\Admin\AppData\Roaming\MAINPROC.exe,"
    3⤵
    - Modifies WinLogon for persistence
    - System Location Discovery: System Language Discovery
    PID:1516
- C:\Users\Admin\AppData\Roaming\MAINPROC.exe
  "C:\Users\Admin\AppData\Roaming\MAINPROC.exe"
  2⤵
  - System Binary Proxy Execution: InstallUtil
  - Checks computer location settings
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1940
- - C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe
    "C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe"
    3⤵
    - Executes dropped EXE
    - Accesses Microsoft Outlook profiles
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of SetWindowsHookEx
    - outlook_office_path
    - outlook_win_path
    PID:2124
- - C:\Users\Admin\AppData\Local\Temp\smss.exe
    "C:\Users\Admin\AppData\Local\Temp\smss.exe"
    3⤵
    - Checks computer location settings
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:5008
  - - C:\Users\Admin\AppData\Local\Temp\smss.exe
      "C:\Users\Admin\AppData\Local\Temp\smss.exe"
      4⤵
      Executes dropped EXE
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:812

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Winlogon Helper DLL

T1547.004

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Winlogon Helper DLL

T1547.004

Defense Evasion

Modify Registry

T1112

System Binary Proxy Execution

T1218

InstallUtil

T1218.004

Credential Access

Credentials from Password Stores

T1555

Credentials from Web Browsers

T1555.003

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Credentials in Registry

T1552.002

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Data from Local System

T1005

Email Collection

T1114

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\smss.exe.log

Filesize
1KB

MD5
7dca233df92b3884663fa5a40db8d49c

SHA1
208b8f27b708c4e06ac37f974471cc7b29c29b60

SHA256
90c83311e35da0b5f8aa65aa2109745feb68ee9540e863f4ed909872e9c6a84c

SHA512
d134b96fd33c79c85407608f76afc5a9f937bff453b1c90727a3ed992006c7d4c8329be6a2b5ba6b11da1a32f7cd60e9bc380be388b586d6cd5c2e6b1f57bd07

Download Submit
C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe

Filesize
41KB

MD5
5d4073b2eb6d217c19f2b22f21bf8d57

SHA1
f0209900fbf08d004b886a0b3ba33ea2b0bf9da8

SHA256
ac1a3f21fcc88f9cee7bf51581eafba24cc76c924f0821deb2afdf1080ddf3d3

SHA512
9ac94880684933ba3407cdc135abc3047543436567af14cd9269c4adc5a6535db7b867d6de0d6238a21b94e69f9890dbb5739155871a624520623a7e56872159

Download Submit
C:\Users\Admin\AppData\Local\Temp\smss.exe

Filesize
76KB

MD5
0e362e7005823d0bec3719b902ed6d62

SHA1
590d860b909804349e0cdc2f1662b37bd62f7463

SHA256
2d0dc6216f613ac7551a7e70a798c22aee8eb9819428b1357e2b8c73bef905ad

SHA512
518991b68496b3f8545e418cf9b345e0791e09cc20d177b8aa47e0aba447aa55383c64f5bdaca39f2b061a5d08c16f2ad484af8a9f238ca23ab081618fba3ad3

Download Submit
C:\Users\Admin\AppData\Local\Temp\smss.txt

Filesize
54B

MD5
86a21c3a4185acba882d0ad439c5f25e

SHA1
c9d3483ed564597f30543d80921685801ed02929

SHA256
b69dc469e42ac42f8f1e73c51cd1d1508b4285a5f5ff96283d34819de777104f

SHA512
fa5731c1a5ba86354212a5bb23cb00fb21d62b6becebaa927a50e7a4bcd3a1d958565b93037535377c233a118b86a37840c02dd08a1e752c1c56a2ef53c70256

Download Submit
C:\Users\Admin\AppData\Local\Temp\smss.txt

Filesize
56B

MD5
3250194993d3e09e333d912923012f76

SHA1
e317c8c42aeceef75bc9680d1ccd1d6084a535fd

SHA256
7c8e2a6e633f3803f6932841236d08a3506088180363c63319fb88ce940dca21

SHA512
ce1a73def6ab6001164ccce09e25409828bb3e8f8207d11ebe8ab27fd77fe8111558c1710e07d243106c8210139937f7aba1b899ef93a0f73213fb70c02118f5

Download Submit
C:\Users\Admin\AppData\Roaming\MAINPROC.exe

Filesize
802KB

MD5
300f3f1f1a66b1e440cbdc4efd14e2ef

SHA1
8e1043d8c4b2315fba6d8a9692846f8791c22436

SHA256
71609c370ed4d3d62069401d753b937faf2dc66c0003409999946f5eb1046816

SHA512
a176a7f2d87f8c77b72ad484f315af203502829ddbdaa2d24fe48d656bf65b3166f2cb452067e1b0ef8b4aaa3fa7a4daf32eee65a1b434e44a438e5b1c0c452e

Download Submit
memory/1940-28-0x0000000008B50000-0x0000000008B64000-memory.dmp

Filesize
80KB

Download
memory/1940-25-0x00000000750B0000-0x0000000075860000-memory.dmp

Filesize
7.7MB

Download
memory/1940-56-0x00000000750B0000-0x0000000075860000-memory.dmp

Filesize
7.7MB

Download
memory/1940-26-0x00000000750B0000-0x0000000075860000-memory.dmp

Filesize
7.7MB

Download
memory/1940-27-0x00000000750B0000-0x0000000075860000-memory.dmp

Filesize
7.7MB

Download
memory/1940-37-0x00000000750B0000-0x0000000075860000-memory.dmp

Filesize
7.7MB

Download
memory/1940-29-0x0000000000A60000-0x0000000000A66000-memory.dmp

Filesize
24KB

Download
memory/1940-31-0x00000000750B0000-0x0000000075860000-memory.dmp

Filesize
7.7MB

Download
memory/2124-32-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download
memory/2124-61-0x0000000006350000-0x000000000635A000-memory.dmp

Filesize
40KB

Download
memory/2124-60-0x0000000005FC0000-0x0000000006010000-memory.dmp

Filesize
320KB

Download
memory/2124-59-0x0000000005D60000-0x0000000005DC6000-memory.dmp

Filesize
408KB

Download
memory/2124-58-0x0000000005100000-0x0000000005118000-memory.dmp

Filesize
96KB

Download
memory/2336-24-0x00000000750B0000-0x0000000075860000-memory.dmp

Filesize
7.7MB

Download
memory/2336-5-0x0000000006D20000-0x00000000072C4000-memory.dmp

Filesize
5.6MB

Download
memory/2336-0-0x00000000750BE000-0x00000000750BF000-memory.dmp

Filesize
4KB

Download
memory/2336-4-0x00000000066D0000-0x0000000006762000-memory.dmp

Filesize
584KB

Download
memory/2336-3-0x00000000750B0000-0x0000000075860000-memory.dmp

Filesize
7.7MB

Download
memory/2336-2-0x0000000005930000-0x00000000059CC000-memory.dmp

Filesize
624KB

Download
memory/2336-1-0x0000000000EA0000-0x0000000000F6E000-memory.dmp

Filesize
824KB

Download
memory/2336-7-0x00000000750B0000-0x0000000075860000-memory.dmp

Filesize
7.7MB

Download
memory/2336-6-0x00000000069F0000-0x0000000006A28000-memory.dmp

Filesize
224KB

Download
memory/2336-12-0x00000000750B0000-0x0000000075860000-memory.dmp

Filesize
7.7MB

Download
memory/2336-10-0x00000000750B0000-0x0000000075860000-memory.dmp

Filesize
7.7MB

Download
memory/2336-8-0x00000000750BE000-0x00000000750BF000-memory.dmp

Filesize
4KB

Download
memory/5008-48-0x0000000000EB0000-0x0000000000ECA000-memory.dmp

Filesize
104KB

Download