Malware Analysis Report

2024-10-18 21:31

Sample ID 240809-lhg6mssgrh
Target -.exe
SHA256 b139b5f0a9d2144720c249bd412b68cada81c96b03a6ecf6a64a9f5f1bca7395
Tags
stormkitty stealer
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

b139b5f0a9d2144720c249bd412b68cada81c96b03a6ecf6a64a9f5f1bca7395

Threat Level: Known bad

The file -.exe was found to be: Known bad.

Malicious Activity Summary

stormkitty stealer

StormKitty

StormKitty payload

Stormkitty family

Loads dropped DLL

Executes dropped EXE

Deletes itself

Checks computer location settings

Looks up external IP address via web service

Legitimate hosting services abused for malware hosting/C2

Unsigned PE

Enumerates physical storage devices

Kills process with taskkill

Suspicious use of WriteProcessMemory

Suspicious use of AdjustPrivilegeToken

Suspicious use of FindShellTrayWindow

Delays execution with timeout.exe

Suspicious behavior: EnumeratesProcesses

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-08-09 09:31

Signatures

StormKitty payload

Description Indicator Process Target
N/A N/A N/A N/A

Stormkitty family

stormkitty

Unsigned PE

Description Indicator Process Target
N/A N/A N/A N/A

Analysis: behavioral1

Detonation Overview

Submitted

2024-08-09 09:31

Reported

2024-08-09 09:34

Platform

win7-20240704-en

Max time kernel

121s

Max time network

121s

Command Line

"C:\Users\Admin\AppData\Local\Temp\-.exe"

Signatures

StormKitty

stealer stormkitty

StormKitty payload

Description Indicator Process Target
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A

Deletes itself

Description Indicator Process Target
N/A N/A C:\Windows\System32\cmd.exe N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A N/A N/A

Loads dropped DLL

Description Indicator Process Target
N/A N/A N/A N/A

Legitimate hosting services abused for malware hosting/C2

Description Indicator Process Target
N/A raw.githubusercontent.com N/A N/A
N/A raw.githubusercontent.com N/A N/A
N/A raw.githubusercontent.com N/A N/A
N/A raw.githubusercontent.com N/A N/A

Looks up external IP address via web service

Description Indicator Process Target
N/A ip-api.com N/A N/A

Enumerates physical storage devices

Delays execution with timeout.exe

evasion
Description Indicator Process Target
N/A N/A C:\Windows\system32\timeout.exe N/A

Kills process with taskkill

evasion
Description Indicator Process Target
N/A N/A C:\Windows\system32\taskkill.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\-.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\-.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\system32\taskkill.exe N/A

Processes

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

"C:\Users\Admin\AppData\Local\Temp\-.exe"

C:\Windows\System32\cmd.exe

"C:\Windows\System32\cmd.exe" /C C:\Users\Admin\AppData\Local\Temp\tmp3CD6.tmp.bat

C:\Windows\system32\chcp.com

chcp 65001

C:\Windows\system32\taskkill.exe

TaskKill /F /IM 2840

C:\Windows\system32\timeout.exe

Timeout /T 2 /Nobreak

Network

Country Destination Domain Proto
US 8.8.8.8:53 ip-api.com udp
US 208.95.112.1:80 ip-api.com tcp
US 8.8.8.8:53 raw.githubusercontent.com udp
US 185.199.109.133:443 raw.githubusercontent.com tcp
US 185.199.109.133:443 raw.githubusercontent.com tcp
US 185.199.109.133:443 raw.githubusercontent.com tcp

Files

memory/2840-0-0x000007FEF5573000-0x000007FEF5574000-memory.dmp

memory/2840-1-0x000000013F170000-0x000000013F1C0000-memory.dmp

memory/2840-2-0x0000000002240000-0x00000000022B4000-memory.dmp

memory/2840-3-0x0000000000740000-0x0000000000746000-memory.dmp

memory/2840-4-0x000007FEF5570000-0x000007FEF5F5C000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\Cab9C9F.tmp

MD5 49aebf8cbd62d92ac215b2923fb1b9f5
SHA1 1723be06719828dda65ad804298d0431f6aff976
SHA256 b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f
SHA512 bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

C:\Users\Admin\AppData\Local\Temp\Tar9CB2.tmp

MD5 4ea6026cf93ec6338144661bf1202cd1
SHA1 a1dec9044f750ad887935a01430bf49322fbdcb7
SHA256 8efbc21559ef8b1bcf526800d8070baad42474ce7198e26fa771dbb41a76b1d8
SHA512 6c7e0980e39aacf4c3689802353f464a08cd17753bd210ee997e5f2a455deb4f287a9ef74d84579dbde49bc96213cd2b8b247723919c412ea980aa6e6bfe218b

memory/2840-171-0x000007FEF5573000-0x000007FEF5574000-memory.dmp

\Users\Admin\AppData\Local\Temp\-.exe

MD5 4c7c52e95b8c9c16cb9e79e477147ea9
SHA1 05c27eb4f35f04a463d6d7a24bc01b932086a472
SHA256 b139b5f0a9d2144720c249bd412b68cada81c96b03a6ecf6a64a9f5f1bca7395
SHA512 9ef5449a778419b636adcce125ca89dbf5fd08b03ab260653da474ab4ddd1b547fb3df457c6c1abb14214aa41b4331ec2a648b5e702b598a0f3c2e711bbed951

memory/2840-175-0x000007FEF5570000-0x000007FEF5F5C000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\tmp3CD6.tmp.bat

MD5 45252167e6d71d406e28ed71ae8ccb41
SHA1 c26a6a70e1e5e2dfdf719c8ecc7884d40eacd931
SHA256 52fefaaab9e200e249eb5d27fb50061b3f8fe6794324ca3e786e1dd848d5f4d3
SHA512 146f3aca52e5d560264ff99292098d597666e78b511e6d65041ecbd263a1a8521334afb259f168a87b200b980023cc56128c2831e1446e9e6e116731a3378883

memory/2840-179-0x000007FEF5570000-0x000007FEF5F5C000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-08-09 09:31

Reported

2024-08-09 09:33

Platform

win10v2004-20240802-en

Max time kernel

56s

Max time network

54s

Command Line

"C:\Users\Admin\AppData\Local\Temp\-.exe"

Signatures

StormKitty

stealer stormkitty

StormKitty payload

Description Indicator Process Target
N/A N/A N/A N/A
N/A N/A N/A N/A

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-523280732-2327480845-3730041215-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\-.exe N/A

Legitimate hosting services abused for malware hosting/C2

Description Indicator Process Target
N/A raw.githubusercontent.com N/A N/A
N/A raw.githubusercontent.com N/A N/A

Looks up external IP address via web service

Description Indicator Process Target
N/A ip-api.com N/A N/A

Enumerates physical storage devices

Delays execution with timeout.exe

evasion
Description Indicator Process Target
N/A N/A C:\Windows\system32\timeout.exe N/A

Kills process with taskkill

evasion
Description Indicator Process Target
N/A N/A C:\Windows\system32\taskkill.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\-.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\-.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\system32\taskkill.exe N/A

Suspicious use of FindShellTrayWindow

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\-.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1944 wrote to memory of 4332 N/A C:\Users\Admin\AppData\Local\Temp\-.exe C:\Windows\System32\cmd.exe
PID 1944 wrote to memory of 4332 N/A C:\Users\Admin\AppData\Local\Temp\-.exe C:\Windows\System32\cmd.exe
PID 4332 wrote to memory of 4564 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\chcp.com
PID 4332 wrote to memory of 4564 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\chcp.com
PID 4332 wrote to memory of 4004 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\taskkill.exe
PID 4332 wrote to memory of 4004 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\taskkill.exe
PID 4332 wrote to memory of 2228 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\timeout.exe
PID 4332 wrote to memory of 2228 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\timeout.exe

Processes

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

"C:\Users\Admin\AppData\Local\Temp\-.exe"

C:\Windows\System32\cmd.exe

"C:\Windows\System32\cmd.exe" /C C:\Users\Admin\AppData\Local\Temp\tmp5520.tmp.bat

C:\Windows\system32\chcp.com

chcp 65001

C:\Windows\system32\taskkill.exe

TaskKill /F /IM 1944

C:\Windows\system32\timeout.exe

Timeout /T 2 /Nobreak

Network

Country Destination Domain Proto
US 8.8.8.8:53 g.bing.com udp
US 13.107.21.237:443 g.bing.com tcp
US 8.8.8.8:53 237.21.107.13.in-addr.arpa udp
US 8.8.8.8:53 5.181.190.20.in-addr.arpa udp
US 8.8.8.8:53 81.144.22.2.in-addr.arpa udp
US 8.8.8.8:53 ip-api.com udp
US 208.95.112.1:80 ip-api.com tcp
US 8.8.8.8:53 26.35.223.20.in-addr.arpa udp
US 8.8.8.8:53 raw.githubusercontent.com udp
US 185.199.110.133:443 raw.githubusercontent.com tcp
US 8.8.8.8:53 1.112.95.208.in-addr.arpa udp
US 8.8.8.8:53 133.110.199.185.in-addr.arpa udp
US 8.8.8.8:53 103.169.127.40.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp

Files

memory/1944-0-0x00007FFE06703000-0x00007FFE06705000-memory.dmp

memory/1944-1-0x0000000000810000-0x0000000000860000-memory.dmp

memory/1944-2-0x00000000015F0000-0x0000000001664000-memory.dmp

memory/1944-3-0x0000000001660000-0x0000000001666000-memory.dmp

memory/1944-4-0x00007FFE06700000-0x00007FFE071C1000-memory.dmp

memory/1944-12-0x00007FFE06703000-0x00007FFE06705000-memory.dmp

memory/1944-13-0x00007FFE06700000-0x00007FFE071C1000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\tmp5520.tmp.bat

MD5 caa80a0b8a8b8c0e30f21c6bcafd470d
SHA1 6de98c12bc58fb233f0c57ff50d9183b232380d0
SHA256 830f0658e367ddbaf802d14d7ee9d118bd06ea5539a9c7f6b3e0cf9c81e42b35
SHA512 3246c7a1006b4bfb7aacd115511d06c5bf886791ed9fec5ae2ce4f1af40c3f3978de43d527f0ddfb7e3dc4cd4db8a183d4dec03df46960864820ecdfd9a21c7d

memory/1944-17-0x00007FFE06700000-0x00007FFE071C1000-memory.dmp