Malware Analysis Report

2024-10-16 03:24

Sample ID 210827-yxq8psh4ms
Target 5665f108965c55a2d3ebcbbb50b03786
SHA256 a32770d46ee2ee5b91cc36e5159868ec3ff7f847e7516d7bcb952f7a94e347a2
Tags
kasl redline babuk discovery 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

a32770d46ee2ee5b91cc36e5159868ec3ff7f847e7516d7bcb952f7a94e347a2

Threat Level: Known bad

The file 5665f108965c55a2d3ebcbbb50b03786 was found to be: Known bad.

Malicious Activity Summary

kasl redline babuk discovery ransomware spyware stealer

Redline family

Babuk Locker

RedLine Payload

Deletes shadow copies

Modifies extensions of user files

Downloads MZ/PE file

Executes dropped EXE

Loads dropped DLL

Reads user/profile data of web browsers

Accesses cryptocurrency files/wallets, possible credential harvesting

Checks installed software on the system

Enumerates connected drives

Suspicious use of SetThreadContext

Enumerates physical storage devices

Interacts with shadow copies

Suspicious use of WriteProcessMemory

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2021-08-27 04:19

Signatures

RedLine Payload

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

Redline family

redline

Analysis: behavioral1

Detonation Overview

Submitted

2021-08-27 04:19

Reported

2021-08-27 04:22

Platform

win7v20210408

Max time kernel

94s

Max time network

120s

Command Line

"C:\Users\Admin\AppData\Local\Temp\5665f108965c55a2d3ebcbbb50b03786.exe"

Signatures

Babuk Locker

ransomware babuk

Deletes shadow copies

ransomware

Downloads MZ/PE file

Executes dropped EXE

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

Modifies extensions of user files

ransomware
Description Indicator Process Target
File opened for modification C:\Users\Admin\Pictures\EnableRemove.raw.babyk C:\Users\Admin\AppData\Local\Temp\AudioB.exe N/A
File opened for modification C:\Users\Admin\Pictures\SkipAdd.tiff.babyk C:\Users\Admin\AppData\Local\Temp\AudioB.exe N/A
File renamed C:\Users\Admin\Pictures\DenyCheckpoint.raw => C:\Users\Admin\Pictures\DenyCheckpoint.raw.babyk C:\Users\Admin\AppData\Local\Temp\AudioB.exe N/A
File renamed C:\Users\Admin\Pictures\EnableRemove.raw => C:\Users\Admin\Pictures\EnableRemove.raw.babyk C:\Users\Admin\AppData\Local\Temp\AudioB.exe N/A
File renamed C:\Users\Admin\Pictures\EditConvertTo.tiff => C:\Users\Admin\Pictures\EditConvertTo.tiff.babyk C:\Users\Admin\AppData\Local\Temp\AudioB.exe N/A
File opened for modification C:\Users\Admin\Pictures\ConvertFromFind.tif.babyk C:\Users\Admin\AppData\Local\Temp\AudioB.exe N/A
File opened for modification C:\Users\Admin\Pictures\DenyCheckpoint.raw.babyk C:\Users\Admin\AppData\Local\Temp\AudioB.exe N/A
File opened for modification C:\Users\Admin\Pictures\EditConvertTo.tiff.babyk C:\Users\Admin\AppData\Local\Temp\AudioB.exe N/A
File opened for modification C:\Users\Admin\Pictures\ReadMount.png.babyk C:\Users\Admin\AppData\Local\Temp\AudioB.exe N/A
File opened for modification C:\Users\Admin\Pictures\SkipAdd.tiff C:\Users\Admin\AppData\Local\Temp\AudioB.exe N/A
File opened for modification C:\Users\Admin\Pictures\ApproveUse.tiff.babyk C:\Users\Admin\AppData\Local\Temp\AudioB.exe N/A
File opened for modification C:\Users\Admin\Pictures\EditConvertTo.tiff C:\Users\Admin\AppData\Local\Temp\AudioB.exe N/A
File renamed C:\Users\Admin\Pictures\ConvertFromFind.tif => C:\Users\Admin\Pictures\ConvertFromFind.tif.babyk C:\Users\Admin\AppData\Local\Temp\AudioB.exe N/A
File renamed C:\Users\Admin\Pictures\ReadSuspend.png => C:\Users\Admin\Pictures\ReadSuspend.png.babyk C:\Users\Admin\AppData\Local\Temp\AudioB.exe N/A
File renamed C:\Users\Admin\Pictures\SkipAdd.tiff => C:\Users\Admin\Pictures\SkipAdd.tiff.babyk C:\Users\Admin\AppData\Local\Temp\AudioB.exe N/A
File renamed C:\Users\Admin\Pictures\SubmitConnect.crw => C:\Users\Admin\Pictures\SubmitConnect.crw.babyk C:\Users\Admin\AppData\Local\Temp\AudioB.exe N/A
File opened for modification C:\Users\Admin\Pictures\SubmitConnect.crw.babyk C:\Users\Admin\AppData\Local\Temp\AudioB.exe N/A
File opened for modification C:\Users\Admin\Pictures\ApproveUse.tiff C:\Users\Admin\AppData\Local\Temp\AudioB.exe N/A
File renamed C:\Users\Admin\Pictures\ApproveUse.tiff => C:\Users\Admin\Pictures\ApproveUse.tiff.babyk C:\Users\Admin\AppData\Local\Temp\AudioB.exe N/A
File renamed C:\Users\Admin\Pictures\ReadMount.png => C:\Users\Admin\Pictures\ReadMount.png.babyk C:\Users\Admin\AppData\Local\Temp\AudioB.exe N/A
File opened for modification C:\Users\Admin\Pictures\ReadSuspend.png.babyk C:\Users\Admin\AppData\Local\Temp\AudioB.exe N/A

Reads user/profile data of web browsers

spyware stealer

Accesses cryptocurrency files/wallets, possible credential harvesting

spyware

Checks installed software on the system

discovery

Enumerates connected drives

Description Indicator Process Target
File opened (read-only) \??\N: C:\Users\Admin\AppData\Local\Temp\AudioB.exe N/A
File opened (read-only) \??\R: C:\Users\Admin\AppData\Local\Temp\AudioB.exe N/A
File opened (read-only) \??\Y: C:\Users\Admin\AppData\Local\Temp\AudioB.exe N/A
File opened (read-only) \??\P: C:\Users\Admin\AppData\Local\Temp\AudioB.exe N/A
File opened (read-only) \??\A: C:\Users\Admin\AppData\Local\Temp\AudioB.exe N/A
File opened (read-only) \??\V: C:\Users\Admin\AppData\Local\Temp\AudioB.exe N/A
File opened (read-only) \??\M: C:\Users\Admin\AppData\Local\Temp\AudioB.exe N/A
File opened (read-only) \??\U: C:\Users\Admin\AppData\Local\Temp\AudioB.exe N/A
File opened (read-only) \??\I: C:\Users\Admin\AppData\Local\Temp\AudioB.exe N/A
File opened (read-only) \??\E: C:\Users\Admin\AppData\Local\Temp\AudioB.exe N/A
File opened (read-only) \??\T: C:\Users\Admin\AppData\Local\Temp\AudioB.exe N/A
File opened (read-only) \??\F: C:\Users\Admin\AppData\Local\Temp\AudioB.exe N/A
File opened (read-only) \??\G: C:\Users\Admin\AppData\Local\Temp\AudioB.exe N/A
File opened (read-only) \??\H: C:\Users\Admin\AppData\Local\Temp\AudioB.exe N/A
File opened (read-only) \??\K: C:\Users\Admin\AppData\Local\Temp\AudioB.exe N/A
File opened (read-only) \??\Q: C:\Users\Admin\AppData\Local\Temp\AudioB.exe N/A
File opened (read-only) \??\W: C:\Users\Admin\AppData\Local\Temp\AudioB.exe N/A
File opened (read-only) \??\B: C:\Users\Admin\AppData\Local\Temp\AudioB.exe N/A
File opened (read-only) \??\L: C:\Users\Admin\AppData\Local\Temp\AudioB.exe N/A
File opened (read-only) \??\X: C:\Users\Admin\AppData\Local\Temp\AudioB.exe N/A
File opened (read-only) \??\J: C:\Users\Admin\AppData\Local\Temp\AudioB.exe N/A
File opened (read-only) \??\Z: C:\Users\Admin\AppData\Local\Temp\AudioB.exe N/A
File opened (read-only) \??\O: C:\Users\Admin\AppData\Local\Temp\AudioB.exe N/A
File opened (read-only) \??\S: C:\Users\Admin\AppData\Local\Temp\AudioB.exe N/A

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 1360 set thread context of 748 N/A C:\Users\Admin\AppData\Local\Temp\AudioB.exe C:\Users\Admin\AppData\Local\Temp\AudioB.exe

Enumerates physical storage devices

Interacts with shadow copies

ransomware
Description Indicator Process Target
N/A N/A C:\Windows\system32\vssadmin.exe N/A
N/A N/A C:\Windows\system32\vssadmin.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\5665f108965c55a2d3ebcbbb50b03786.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\AudioB.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\5665f108965c55a2d3ebcbbb50b03786.exe N/A
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\AudioB.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 1832 wrote to memory of 1360 N/A C:\Users\Admin\AppData\Local\Temp\5665f108965c55a2d3ebcbbb50b03786.exe C:\Users\Admin\AppData\Local\Temp\AudioB.exe
PID 1832 wrote to memory of 1360 N/A C:\Users\Admin\AppData\Local\Temp\5665f108965c55a2d3ebcbbb50b03786.exe C:\Users\Admin\AppData\Local\Temp\AudioB.exe
PID 1832 wrote to memory of 1360 N/A C:\Users\Admin\AppData\Local\Temp\5665f108965c55a2d3ebcbbb50b03786.exe C:\Users\Admin\AppData\Local\Temp\AudioB.exe
PID 1832 wrote to memory of 1360 N/A C:\Users\Admin\AppData\Local\Temp\5665f108965c55a2d3ebcbbb50b03786.exe C:\Users\Admin\AppData\Local\Temp\AudioB.exe
PID 1360 wrote to memory of 748 N/A C:\Users\Admin\AppData\Local\Temp\AudioB.exe C:\Users\Admin\AppData\Local\Temp\AudioB.exe
PID 1360 wrote to memory of 748 N/A C:\Users\Admin\AppData\Local\Temp\AudioB.exe C:\Users\Admin\AppData\Local\Temp\AudioB.exe
PID 1360 wrote to memory of 748 N/A C:\Users\Admin\AppData\Local\Temp\AudioB.exe C:\Users\Admin\AppData\Local\Temp\AudioB.exe
PID 1360 wrote to memory of 748 N/A C:\Users\Admin\AppData\Local\Temp\AudioB.exe C:\Users\Admin\AppData\Local\Temp\AudioB.exe
PID 1360 wrote to memory of 748 N/A C:\Users\Admin\AppData\Local\Temp\AudioB.exe C:\Users\Admin\AppData\Local\Temp\AudioB.exe
PID 1360 wrote to memory of 748 N/A C:\Users\Admin\AppData\Local\Temp\AudioB.exe C:\Users\Admin\AppData\Local\Temp\AudioB.exe
PID 1360 wrote to memory of 748 N/A C:\Users\Admin\AppData\Local\Temp\AudioB.exe C:\Users\Admin\AppData\Local\Temp\AudioB.exe
PID 1360 wrote to memory of 748 N/A C:\Users\Admin\AppData\Local\Temp\AudioB.exe C:\Users\Admin\AppData\Local\Temp\AudioB.exe
PID 1360 wrote to memory of 748 N/A C:\Users\Admin\AppData\Local\Temp\AudioB.exe C:\Users\Admin\AppData\Local\Temp\AudioB.exe
PID 1360 wrote to memory of 748 N/A C:\Users\Admin\AppData\Local\Temp\AudioB.exe C:\Users\Admin\AppData\Local\Temp\AudioB.exe
PID 1360 wrote to memory of 748 N/A C:\Users\Admin\AppData\Local\Temp\AudioB.exe C:\Users\Admin\AppData\Local\Temp\AudioB.exe
PID 748 wrote to memory of 828 N/A C:\Users\Admin\AppData\Local\Temp\AudioB.exe C:\Windows\System32\cmd.exe
PID 748 wrote to memory of 828 N/A C:\Users\Admin\AppData\Local\Temp\AudioB.exe C:\Windows\System32\cmd.exe
PID 748 wrote to memory of 828 N/A C:\Users\Admin\AppData\Local\Temp\AudioB.exe C:\Windows\System32\cmd.exe
PID 748 wrote to memory of 828 N/A C:\Users\Admin\AppData\Local\Temp\AudioB.exe C:\Windows\System32\cmd.exe
PID 828 wrote to memory of 2028 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\vssadmin.exe
PID 828 wrote to memory of 2028 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\vssadmin.exe
PID 828 wrote to memory of 2028 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\vssadmin.exe
PID 748 wrote to memory of 1060 N/A C:\Users\Admin\AppData\Local\Temp\AudioB.exe C:\Windows\System32\cmd.exe
PID 748 wrote to memory of 1060 N/A C:\Users\Admin\AppData\Local\Temp\AudioB.exe C:\Windows\System32\cmd.exe
PID 748 wrote to memory of 1060 N/A C:\Users\Admin\AppData\Local\Temp\AudioB.exe C:\Windows\System32\cmd.exe
PID 748 wrote to memory of 1060 N/A C:\Users\Admin\AppData\Local\Temp\AudioB.exe C:\Windows\System32\cmd.exe
PID 1060 wrote to memory of 524 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\vssadmin.exe
PID 1060 wrote to memory of 524 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\vssadmin.exe
PID 1060 wrote to memory of 524 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\vssadmin.exe

Processes

C:\Users\Admin\AppData\Local\Temp\5665f108965c55a2d3ebcbbb50b03786.exe

"C:\Users\Admin\AppData\Local\Temp\5665f108965c55a2d3ebcbbb50b03786.exe"

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

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

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

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

C:\Windows\System32\cmd.exe

"C:\Windows\System32\cmd.exe" /c vssadmin.exe delete shadows /all /quiet

C:\Windows\system32\vssadmin.exe

vssadmin.exe delete shadows /all /quiet

C:\Windows\system32\vssvc.exe

C:\Windows\system32\vssvc.exe

C:\Windows\System32\cmd.exe

"C:\Windows\System32\cmd.exe" /c vssadmin.exe delete shadows /all /quiet

C:\Windows\system32\vssadmin.exe

vssadmin.exe delete shadows /all /quiet

Network

Country Destination Domain Proto
N/A 51.254.68.139:15009 tcp
N/A 8.8.8.8:53 api.ip.sb udp
N/A 172.67.75.172:443 api.ip.sb tcp
N/A 8.8.8.8:53 cdn.discordapp.com udp
N/A 162.159.134.233:443 cdn.discordapp.com tcp

Files

memory/1832-60-0x0000000000C70000-0x0000000000C71000-memory.dmp

memory/1832-62-0x0000000004810000-0x0000000004811000-memory.dmp

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

MD5 cf88599048145e4911915215a91527f4
SHA1 f4ba5c7117736388c4de3442b1d6e4f84628c15d
SHA256 9f7d6949fd359dce79d3233eb80101ff706a35de5308543b0488450c19eba0f0
SHA512 254f6e26ed075ff1fe46493e36e6ec7eb70db52d2219070b6a77cbf7202d231fc826bd3fb69bdcaee86e45c9ce4ee8bc7085d37d5627a0bc1d2ec86aa9f2c0f7

memory/1360-64-0x0000000000000000-mapping.dmp

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

MD5 cf88599048145e4911915215a91527f4
SHA1 f4ba5c7117736388c4de3442b1d6e4f84628c15d
SHA256 9f7d6949fd359dce79d3233eb80101ff706a35de5308543b0488450c19eba0f0
SHA512 254f6e26ed075ff1fe46493e36e6ec7eb70db52d2219070b6a77cbf7202d231fc826bd3fb69bdcaee86e45c9ce4ee8bc7085d37d5627a0bc1d2ec86aa9f2c0f7

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

MD5 cf88599048145e4911915215a91527f4
SHA1 f4ba5c7117736388c4de3442b1d6e4f84628c15d
SHA256 9f7d6949fd359dce79d3233eb80101ff706a35de5308543b0488450c19eba0f0
SHA512 254f6e26ed075ff1fe46493e36e6ec7eb70db52d2219070b6a77cbf7202d231fc826bd3fb69bdcaee86e45c9ce4ee8bc7085d37d5627a0bc1d2ec86aa9f2c0f7

memory/1360-67-0x0000000000010000-0x0000000000011000-memory.dmp

memory/1360-69-0x0000000004D70000-0x0000000004D71000-memory.dmp

memory/1360-70-0x0000000000340000-0x0000000000341000-memory.dmp

memory/1360-71-0x0000000004D71000-0x0000000004D72000-memory.dmp

memory/1360-72-0x0000000001E20000-0x0000000001E31000-memory.dmp

memory/1360-73-0x0000000008260000-0x00000000082FC000-memory.dmp

memory/1360-74-0x0000000001FB0000-0x0000000001FE1000-memory.dmp

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

MD5 cf88599048145e4911915215a91527f4
SHA1 f4ba5c7117736388c4de3442b1d6e4f84628c15d
SHA256 9f7d6949fd359dce79d3233eb80101ff706a35de5308543b0488450c19eba0f0
SHA512 254f6e26ed075ff1fe46493e36e6ec7eb70db52d2219070b6a77cbf7202d231fc826bd3fb69bdcaee86e45c9ce4ee8bc7085d37d5627a0bc1d2ec86aa9f2c0f7

memory/748-76-0x0000000000400000-0x0000000000418000-memory.dmp

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

MD5 cf88599048145e4911915215a91527f4
SHA1 f4ba5c7117736388c4de3442b1d6e4f84628c15d
SHA256 9f7d6949fd359dce79d3233eb80101ff706a35de5308543b0488450c19eba0f0
SHA512 254f6e26ed075ff1fe46493e36e6ec7eb70db52d2219070b6a77cbf7202d231fc826bd3fb69bdcaee86e45c9ce4ee8bc7085d37d5627a0bc1d2ec86aa9f2c0f7

memory/748-77-0x000000000040ABC0-mapping.dmp

memory/748-79-0x0000000075801000-0x0000000075803000-memory.dmp

memory/748-80-0x0000000000400000-0x0000000000418000-memory.dmp

memory/828-81-0x0000000000000000-mapping.dmp

memory/2028-82-0x0000000000000000-mapping.dmp

memory/1060-83-0x0000000000000000-mapping.dmp

memory/524-84-0x0000000000000000-mapping.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2021-08-27 04:19

Reported

2021-08-27 04:21

Platform

win10v20210410

Max time kernel

17s

Max time network

122s

Command Line

"C:\Users\Admin\AppData\Local\Temp\5665f108965c55a2d3ebcbbb50b03786.exe"

Signatures

Reads user/profile data of web browsers

spyware stealer

Accesses cryptocurrency files/wallets, possible credential harvesting

spyware

Checks installed software on the system

discovery

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\5665f108965c55a2d3ebcbbb50b03786.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\5665f108965c55a2d3ebcbbb50b03786.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\5665f108965c55a2d3ebcbbb50b03786.exe

"C:\Users\Admin\AppData\Local\Temp\5665f108965c55a2d3ebcbbb50b03786.exe"

Network

Country Destination Domain Proto
N/A 51.254.68.139:15009 tcp
N/A 8.8.8.8:53 api.ip.sb udp
N/A 172.67.75.172:443 api.ip.sb tcp

Files

memory/3912-114-0x0000000000510000-0x0000000000511000-memory.dmp

memory/3912-116-0x0000000005290000-0x0000000005291000-memory.dmp

memory/3912-117-0x0000000004D10000-0x0000000004D11000-memory.dmp

memory/3912-118-0x0000000004E40000-0x0000000004E41000-memory.dmp

memory/3912-119-0x0000000004D70000-0x0000000004D71000-memory.dmp

memory/3912-120-0x0000000004C80000-0x0000000005286000-memory.dmp

memory/3912-121-0x0000000004F50000-0x0000000004F51000-memory.dmp

memory/3912-122-0x0000000006780000-0x0000000006781000-memory.dmp

memory/3912-123-0x0000000006E80000-0x0000000006E81000-memory.dmp

memory/3912-124-0x00000000073B0000-0x00000000073B1000-memory.dmp

memory/3912-125-0x0000000006950000-0x0000000006951000-memory.dmp

memory/3912-126-0x0000000006B70000-0x0000000006B71000-memory.dmp

memory/3912-127-0x0000000006C90000-0x0000000006C91000-memory.dmp

memory/3912-128-0x0000000006E30000-0x0000000006E31000-memory.dmp