Malware Analysis Report

2024-09-11 05:42

Sample ID 240701-jdfe5ssflp
Target 124f69160117b292e2ed2de331d5e08f_JaffaCakes118
SHA256 eb8636afcde958d15d1e43779500b8a21980727a4d9559773e41d1f25c0ccf4a
Tags
upx defense_evasion discovery exploit
score
8/10

Table of Contents

Analysis Overview

MITRE ATT&CK Matrix

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
8/10

SHA256

eb8636afcde958d15d1e43779500b8a21980727a4d9559773e41d1f25c0ccf4a

Threat Level: Likely malicious

The file 124f69160117b292e2ed2de331d5e08f_JaffaCakes118 was found to be: Likely malicious.

Malicious Activity Summary

upx defense_evasion discovery exploit

Possible privilege escalation attempt

UPX packed file

Loads dropped DLL

Checks computer location settings

Deletes itself

Modifies file permissions

File and Directory Permissions Modification: Windows File and Directory Permissions Modification

Drops file in System32 directory

Enumerates physical storage devices

Unsigned PE

Suspicious use of WriteProcessMemory

Suspicious use of AdjustPrivilegeToken

Suspicious behavior: EnumeratesProcesses

MITRE ATT&CK Matrix V13

Initial Access
TA0001
Execution
TA0002
Persistence
TA0003
Privilege Escalation
TA0004
Defense Evasion
TA0005
File and Directory Permissions Modification
T1222
Windows File and Directory Permissions Modification
T1222.001
Credential Access
TA0006
Discovery
TA0007
System Information Discovery
T1082
Query Registry
T1012
Lateral Movement
TA0008
Collection
TA0009
Exfiltration
TA0010
Command and Control
TA0011
Impact
TA0040
Resource Development
TA0042
Reconnaissance
TA0043

Analysis: static1

Detonation Overview

Reported

2024-07-01 07:32

Signatures

UPX packed file

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

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-07-01 07:32

Reported

2024-07-01 07:35

Platform

win7-20240508-en

Max time kernel

121s

Max time network

126s

Command Line

C:\Windows\system32\svchost.exe -k DcomLaunch

Signatures

Possible privilege escalation attempt

exploit
Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\takeown.exe N/A
N/A N/A C:\Windows\SysWOW64\icacls.exe N/A

Deletes itself

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\regsvr32.exe N/A

Loads dropped DLL

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\regsvr32.exe N/A

Modifies file permissions

discovery
Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\takeown.exe N/A
N/A N/A C:\Windows\SysWOW64\icacls.exe N/A

UPX packed file

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

File and Directory Permissions Modification: Windows File and Directory Permissions Modification

defense_evasion

Drops file in System32 directory

Description Indicator Process Target
File opened for modification C:\Windows\SysWOW64\apa.dll C:\Windows\SysWOW64\regsvr32.exe N/A
File created C:\Windows\SysWOW64\rpcss.dll C:\Windows\SysWOW64\regsvr32.exe N/A
File opened for modification C:\Windows\SysWOW64\rpcss.dll C:\Windows\SysWOW64\regsvr32.exe N/A

Enumerates physical storage devices

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\regsvr32.exe N/A
N/A N/A C:\Windows\SysWOW64\regsvr32.exe N/A
N/A N/A C:\Windows\SysWOW64\regsvr32.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Windows\SysWOW64\regsvr32.exe N/A
Token: SeTakeOwnershipPrivilege N/A C:\Windows\SysWOW64\takeown.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1912 wrote to memory of 1724 N/A C:\Users\Admin\AppData\Local\Temp\124f69160117b292e2ed2de331d5e08f_JaffaCakes118.exe C:\Windows\SysWOW64\regsvr32.exe
PID 1912 wrote to memory of 1724 N/A C:\Users\Admin\AppData\Local\Temp\124f69160117b292e2ed2de331d5e08f_JaffaCakes118.exe C:\Windows\SysWOW64\regsvr32.exe
PID 1912 wrote to memory of 1724 N/A C:\Users\Admin\AppData\Local\Temp\124f69160117b292e2ed2de331d5e08f_JaffaCakes118.exe C:\Windows\SysWOW64\regsvr32.exe
PID 1912 wrote to memory of 1724 N/A C:\Users\Admin\AppData\Local\Temp\124f69160117b292e2ed2de331d5e08f_JaffaCakes118.exe C:\Windows\SysWOW64\regsvr32.exe
PID 1912 wrote to memory of 1724 N/A C:\Users\Admin\AppData\Local\Temp\124f69160117b292e2ed2de331d5e08f_JaffaCakes118.exe C:\Windows\SysWOW64\regsvr32.exe
PID 1912 wrote to memory of 1724 N/A C:\Users\Admin\AppData\Local\Temp\124f69160117b292e2ed2de331d5e08f_JaffaCakes118.exe C:\Windows\SysWOW64\regsvr32.exe
PID 1912 wrote to memory of 1724 N/A C:\Users\Admin\AppData\Local\Temp\124f69160117b292e2ed2de331d5e08f_JaffaCakes118.exe C:\Windows\SysWOW64\regsvr32.exe
PID 1724 wrote to memory of 2056 N/A C:\Windows\SysWOW64\regsvr32.exe C:\Windows\SysWOW64\takeown.exe
PID 1724 wrote to memory of 2056 N/A C:\Windows\SysWOW64\regsvr32.exe C:\Windows\SysWOW64\takeown.exe
PID 1724 wrote to memory of 2056 N/A C:\Windows\SysWOW64\regsvr32.exe C:\Windows\SysWOW64\takeown.exe
PID 1724 wrote to memory of 2056 N/A C:\Windows\SysWOW64\regsvr32.exe C:\Windows\SysWOW64\takeown.exe
PID 1724 wrote to memory of 2340 N/A C:\Windows\SysWOW64\regsvr32.exe C:\Windows\SysWOW64\icacls.exe
PID 1724 wrote to memory of 2340 N/A C:\Windows\SysWOW64\regsvr32.exe C:\Windows\SysWOW64\icacls.exe
PID 1724 wrote to memory of 2340 N/A C:\Windows\SysWOW64\regsvr32.exe C:\Windows\SysWOW64\icacls.exe
PID 1724 wrote to memory of 2340 N/A C:\Windows\SysWOW64\regsvr32.exe C:\Windows\SysWOW64\icacls.exe
PID 1724 wrote to memory of 592 N/A C:\Windows\SysWOW64\regsvr32.exe C:\Windows\system32\svchost.exe

Processes

C:\Windows\system32\svchost.exe

C:\Windows\system32\svchost.exe -k DcomLaunch

C:\Users\Admin\AppData\Local\Temp\124f69160117b292e2ed2de331d5e08f_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\124f69160117b292e2ed2de331d5e08f_JaffaCakes118.exe"

C:\Windows\SysWOW64\regsvr32.exe

"C:\Windows\system32\regsvr32.exe" /s C:\Users\Admin\AppData\Local\Temp\~f760faa.tmp ,C:\Users\Admin\AppData\Local\Temp\124f69160117b292e2ed2de331d5e08f_JaffaCakes118.exe

C:\Windows\SysWOW64\takeown.exe

takeown /f "C:\Windows\system32\rpcss.dll"

C:\Windows\SysWOW64\icacls.exe

icacls "C:\Windows\system32\rpcss.dll" /grant administrators:F

Network

N/A

Files

memory/1912-0-0x0000000000400000-0x0000000000421000-memory.dmp

memory/1912-2-0x0000000000400000-0x0000000000421000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\~f760faa.tmp

MD5 e26424ad9bd766aaab724e585359735c
SHA1 aa9541fa9f0dec3ac72b030238660e0099cf9ff8
SHA256 bbc8e8660b1cad39649afba6df97aa024aa47b706785337fc30c5bf517ec692e
SHA512 f3f2793fcaaae64baeffc817cd500a8a7f3ce766dd4f475396d7f6a30459951adee918829e86f069ea2a6ce46d45aea9b3467f155009de72c03aebc503668604

C:\Windows\SysWOW64\apa.dll

MD5 411fd3c00851c55592a263e29973f795
SHA1 c7c906f5da761320fa1cff6b70042df51edcefe8
SHA256 62bd39f9daafb26ce0cb57e551e8abdc94e05a320498936ebf273b0c03b11663
SHA512 2dfe2b20d5c19a3dca76606357ba096ab9b8b7f4c90d92968853dea5a83ed013ead97c4aecb6a4fdc4abeb856453b82560801980feadca27ac980f26e1ffd7fc

memory/592-14-0x00000000003D0000-0x00000000003D1000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-07-01 07:32

Reported

2024-07-01 07:35

Platform

win10v2004-20240611-en

Max time kernel

134s

Max time network

146s

Command Line

C:\Windows\system32\svchost.exe -k DcomLaunch -p

Signatures

Possible privilege escalation attempt

exploit
Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\takeown.exe N/A
N/A N/A C:\Windows\SysWOW64\icacls.exe N/A

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-3169499791-3545231813-3156325206-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\124f69160117b292e2ed2de331d5e08f_JaffaCakes118.exe N/A

Deletes itself

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\regsvr32.exe N/A

Loads dropped DLL

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\regsvr32.exe N/A

Modifies file permissions

discovery
Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\takeown.exe N/A
N/A N/A C:\Windows\SysWOW64\icacls.exe N/A

UPX packed file

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

File and Directory Permissions Modification: Windows File and Directory Permissions Modification

defense_evasion

Drops file in System32 directory

Description Indicator Process Target
File opened for modification C:\Windows\SysWOW64\apa.dll C:\Windows\SysWOW64\regsvr32.exe N/A
File created C:\Windows\SysWOW64\rpcss.dll C:\Windows\SysWOW64\regsvr32.exe N/A
File opened for modification C:\Windows\SysWOW64\rpcss.dll C:\Windows\SysWOW64\regsvr32.exe N/A

Enumerates physical storage devices

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\regsvr32.exe N/A
N/A N/A C:\Windows\SysWOW64\regsvr32.exe N/A
N/A N/A C:\Windows\SysWOW64\regsvr32.exe N/A
N/A N/A C:\Windows\SysWOW64\regsvr32.exe N/A
N/A N/A C:\Windows\SysWOW64\regsvr32.exe N/A
N/A N/A C:\Windows\SysWOW64\regsvr32.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Windows\SysWOW64\regsvr32.exe N/A
Token: SeTakeOwnershipPrivilege N/A C:\Windows\SysWOW64\takeown.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 4420 wrote to memory of 1868 N/A C:\Users\Admin\AppData\Local\Temp\124f69160117b292e2ed2de331d5e08f_JaffaCakes118.exe C:\Windows\SysWOW64\regsvr32.exe
PID 4420 wrote to memory of 1868 N/A C:\Users\Admin\AppData\Local\Temp\124f69160117b292e2ed2de331d5e08f_JaffaCakes118.exe C:\Windows\SysWOW64\regsvr32.exe
PID 4420 wrote to memory of 1868 N/A C:\Users\Admin\AppData\Local\Temp\124f69160117b292e2ed2de331d5e08f_JaffaCakes118.exe C:\Windows\SysWOW64\regsvr32.exe
PID 1868 wrote to memory of 3044 N/A C:\Windows\SysWOW64\regsvr32.exe C:\Windows\SysWOW64\takeown.exe
PID 1868 wrote to memory of 3044 N/A C:\Windows\SysWOW64\regsvr32.exe C:\Windows\SysWOW64\takeown.exe
PID 1868 wrote to memory of 3044 N/A C:\Windows\SysWOW64\regsvr32.exe C:\Windows\SysWOW64\takeown.exe
PID 1868 wrote to memory of 1476 N/A C:\Windows\SysWOW64\regsvr32.exe C:\Windows\SysWOW64\icacls.exe
PID 1868 wrote to memory of 1476 N/A C:\Windows\SysWOW64\regsvr32.exe C:\Windows\SysWOW64\icacls.exe
PID 1868 wrote to memory of 1476 N/A C:\Windows\SysWOW64\regsvr32.exe C:\Windows\SysWOW64\icacls.exe
PID 1868 wrote to memory of 804 N/A C:\Windows\SysWOW64\regsvr32.exe C:\Windows\system32\svchost.exe

Processes

C:\Windows\system32\svchost.exe

C:\Windows\system32\svchost.exe -k DcomLaunch -p

C:\Users\Admin\AppData\Local\Temp\124f69160117b292e2ed2de331d5e08f_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\124f69160117b292e2ed2de331d5e08f_JaffaCakes118.exe"

C:\Windows\SysWOW64\regsvr32.exe

"C:\Windows\system32\regsvr32.exe" /s C:\Users\Admin\AppData\Local\Temp\~e5789a2.tmp ,C:\Users\Admin\AppData\Local\Temp\124f69160117b292e2ed2de331d5e08f_JaffaCakes118.exe

C:\Windows\SysWOW64\takeown.exe

takeown /f "C:\Windows\system32\rpcss.dll"

C:\Windows\SysWOW64\icacls.exe

icacls "C:\Windows\system32\rpcss.dll" /grant administrators:F

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 183.142.211.20.in-addr.arpa udp
US 8.8.8.8:53 g.bing.com udp
US 13.107.21.237:443 g.bing.com tcp
NL 23.62.61.129:443 www.bing.com tcp
US 8.8.8.8:53 0.204.248.87.in-addr.arpa udp
US 8.8.8.8:53 237.21.107.13.in-addr.arpa udp
US 8.8.8.8:53 14.160.190.20.in-addr.arpa udp
US 8.8.8.8:53 129.61.62.23.in-addr.arpa udp
US 8.8.8.8:53 205.47.74.20.in-addr.arpa udp
US 8.8.8.8:53 104.219.191.52.in-addr.arpa udp
US 8.8.8.8:53 103.169.127.40.in-addr.arpa udp
US 8.8.8.8:53 206.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
US 8.8.8.8:53 21.236.111.52.in-addr.arpa udp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 8.8.8.8:53 10.28.171.150.in-addr.arpa udp

Files

memory/4420-0-0x0000000000400000-0x0000000000421000-memory.dmp

memory/4420-2-0x0000000000400000-0x0000000000421000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\~e5789a2.tmp

MD5 e26424ad9bd766aaab724e585359735c
SHA1 aa9541fa9f0dec3ac72b030238660e0099cf9ff8
SHA256 bbc8e8660b1cad39649afba6df97aa024aa47b706785337fc30c5bf517ec692e
SHA512 f3f2793fcaaae64baeffc817cd500a8a7f3ce766dd4f475396d7f6a30459951adee918829e86f069ea2a6ce46d45aea9b3467f155009de72c03aebc503668604

C:\Windows\SysWOW64\apa.dll

MD5 3dec69002f30f34245c8088cd18e0d76
SHA1 a7cf4c53de43817cdbcafed20b0ea130119808fa
SHA256 fcfb8397b6ee98662b9cd23cb62efe33f6230fbb173866f614bc3e4df3cd5d9e
SHA512 929a63487ae3474778743767d64d3da2c0b843c82fd93ef734c70699a7d82f5e1d1d9fda7b4f3b1ac6903102853fe7e92001ecd1731f84d2ca6c7ee80e3b5077