Malware Analysis Report

2024-10-19 02:21

Sample ID 240402-1d937aeb4z
Target 97bc9fc82cdd0607f0bd1e83622b80ba_JaffaCakes118
SHA256 7a12f38cc2bd503f9667620f86315281e8319f9f2dca72aa19eb19ff6f3629a6
Tags
xloader b65i loader rat
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral3

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral4

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

7a12f38cc2bd503f9667620f86315281e8319f9f2dca72aa19eb19ff6f3629a6

Threat Level: Known bad

The file 97bc9fc82cdd0607f0bd1e83622b80ba_JaffaCakes118 was found to be: Known bad.

Malicious Activity Summary

xloader b65i loader rat

Xloader

Xloader payload

Loads dropped DLL

Suspicious use of SetThreadContext

Program crash

Enumerates physical storage devices

Unsigned PE

NSIS installer

Suspicious behavior: EnumeratesProcesses

Suspicious use of WriteProcessMemory

Suspicious behavior: MapViewOfSection

Suspicious use of AdjustPrivilegeToken

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-04-02 21:33

Signatures

Unsigned PE

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

NSIS installer

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

Analysis: behavioral2

Detonation Overview

Submitted

2024-04-02 21:33

Reported

2024-04-02 21:35

Platform

win10v2004-20240226-en

Max time kernel

147s

Max time network

155s

Command Line

"C:\Users\Admin\AppData\Local\Temp\97bc9fc82cdd0607f0bd1e83622b80ba_JaffaCakes118.exe"

Signatures

Xloader

loader xloader

Xloader payload

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

Loads dropped DLL

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\97bc9fc82cdd0607f0bd1e83622b80ba_JaffaCakes118.exe N/A

Enumerates physical storage devices

Processes

C:\Users\Admin\AppData\Local\Temp\97bc9fc82cdd0607f0bd1e83622b80ba_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\97bc9fc82cdd0607f0bd1e83622b80ba_JaffaCakes118.exe"

C:\Users\Admin\AppData\Local\Temp\97bc9fc82cdd0607f0bd1e83622b80ba_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\97bc9fc82cdd0607f0bd1e83622b80ba_JaffaCakes118.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 133.211.185.52.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 20.231.121.79:80 tcp
US 8.8.8.8:53 198.187.3.20.in-addr.arpa udp
US 8.8.8.8:53 99.117.19.2.in-addr.arpa udp
US 8.8.8.8:53 43.229.111.52.in-addr.arpa udp
US 8.8.8.8:53 0.204.248.87.in-addr.arpa udp
US 8.8.8.8:53 13.179.89.13.in-addr.arpa udp

Files

C:\Users\Admin\AppData\Local\Temp\nsj76A8.tmp\nrxdd.dll

MD5 5a5c717c752014c115f8cd5269d09230
SHA1 9e98b8f7fc33c2a635b7fafae816e70a991db637
SHA256 bbd19853959f6a7e000b9bd1880416753f9129294efc7b5eba835891b4034459
SHA512 350f82e6eda8687197d911cddd6d84f734e77f63d538062c49298076db297907643f8771544000d4697d5c3f3995b488ef787a5ba132c89f6b2fba6b5be9a361

memory/924-8-0x0000000010000000-0x000000001000D000-memory.dmp

memory/2352-9-0x0000000000400000-0x0000000000429000-memory.dmp

memory/924-10-0x0000000010000000-0x000000001000D000-memory.dmp

memory/2352-11-0x0000000000A10000-0x0000000000D5A000-memory.dmp

Analysis: behavioral3

Detonation Overview

Submitted

2024-04-02 21:33

Reported

2024-04-02 21:35

Platform

win7-20240221-en

Max time kernel

150s

Max time network

122s

Command Line

C:\Windows\Explorer.EXE

Signatures

Xloader

loader xloader

Xloader payload

rat
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
N/A N/A N/A N/A
N/A N/A N/A N/A

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 2100 set thread context of 1656 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1656 set thread context of 1240 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\Explorer.EXE
PID 1656 set thread context of 1240 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\Explorer.EXE
PID 2860 set thread context of 1240 N/A C:\Windows\SysWOW64\explorer.exe C:\Windows\Explorer.EXE

Suspicious behavior: MapViewOfSection

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\rundll32.exe N/A
N/A N/A C:\Windows\SysWOW64\rundll32.exe N/A
N/A N/A C:\Windows\SysWOW64\rundll32.exe N/A
N/A N/A C:\Windows\SysWOW64\rundll32.exe N/A
N/A N/A C:\Windows\SysWOW64\explorer.exe N/A
N/A N/A C:\Windows\SysWOW64\explorer.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Windows\SysWOW64\rundll32.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\SysWOW64\explorer.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2236 wrote to memory of 2100 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2236 wrote to memory of 2100 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2236 wrote to memory of 2100 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2236 wrote to memory of 2100 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2236 wrote to memory of 2100 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2236 wrote to memory of 2100 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2236 wrote to memory of 2100 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2100 wrote to memory of 1656 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2100 wrote to memory of 1656 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2100 wrote to memory of 1656 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2100 wrote to memory of 1656 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2100 wrote to memory of 1656 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2100 wrote to memory of 1656 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2100 wrote to memory of 1656 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2100 wrote to memory of 1656 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2100 wrote to memory of 1656 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2100 wrote to memory of 1656 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1240 wrote to memory of 2860 N/A C:\Windows\Explorer.EXE C:\Windows\SysWOW64\explorer.exe
PID 1240 wrote to memory of 2860 N/A C:\Windows\Explorer.EXE C:\Windows\SysWOW64\explorer.exe
PID 1240 wrote to memory of 2860 N/A C:\Windows\Explorer.EXE C:\Windows\SysWOW64\explorer.exe
PID 1240 wrote to memory of 2860 N/A C:\Windows\Explorer.EXE C:\Windows\SysWOW64\explorer.exe
PID 2860 wrote to memory of 2388 N/A C:\Windows\SysWOW64\explorer.exe C:\Windows\SysWOW64\cmd.exe
PID 2860 wrote to memory of 2388 N/A C:\Windows\SysWOW64\explorer.exe C:\Windows\SysWOW64\cmd.exe
PID 2860 wrote to memory of 2388 N/A C:\Windows\SysWOW64\explorer.exe C:\Windows\SysWOW64\cmd.exe
PID 2860 wrote to memory of 2388 N/A C:\Windows\SysWOW64\explorer.exe C:\Windows\SysWOW64\cmd.exe

Processes

C:\Windows\Explorer.EXE

C:\Windows\Explorer.EXE

C:\Windows\system32\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\nrxdd.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\nrxdd.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\nrxdd.dll,#1

C:\Windows\SysWOW64\explorer.exe

"C:\Windows\SysWOW64\explorer.exe"

C:\Windows\SysWOW64\cmd.exe

/c del "C:\Windows\SysWOW64\rundll32.exe"

Network

N/A

Files

memory/2100-0-0x0000000010000000-0x000000001000D000-memory.dmp

memory/1656-1-0x0000000000400000-0x0000000000429000-memory.dmp

memory/2100-2-0x0000000010000000-0x000000001000D000-memory.dmp

memory/1656-3-0x00000000022D0000-0x00000000025D3000-memory.dmp

memory/1656-5-0x0000000000400000-0x0000000000429000-memory.dmp

memory/1656-6-0x00000000001A0000-0x00000000001B1000-memory.dmp

memory/1240-7-0x0000000003AF0000-0x0000000003CF0000-memory.dmp

memory/1240-8-0x0000000007280000-0x000000000740A000-memory.dmp

memory/1656-10-0x0000000000400000-0x0000000000429000-memory.dmp

memory/1656-12-0x00000000001E0000-0x00000000001F1000-memory.dmp

memory/1240-11-0x0000000007280000-0x000000000740A000-memory.dmp

memory/1240-13-0x0000000006FA0000-0x00000000070F6000-memory.dmp

memory/2860-14-0x0000000000520000-0x00000000007A1000-memory.dmp

memory/2860-15-0x0000000000520000-0x00000000007A1000-memory.dmp

memory/2860-16-0x00000000000C0000-0x00000000000E9000-memory.dmp

memory/2860-17-0x00000000023B0000-0x00000000026B3000-memory.dmp

memory/2860-18-0x00000000000C0000-0x00000000000E9000-memory.dmp

memory/2860-20-0x0000000002170000-0x0000000002200000-memory.dmp

memory/1240-22-0x0000000006FA0000-0x00000000070F6000-memory.dmp

Analysis: behavioral4

Detonation Overview

Submitted

2024-04-02 21:33

Reported

2024-04-02 21:35

Platform

win10v2004-20231215-en

Max time kernel

90s

Max time network

122s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\nrxdd.dll,#1

Signatures

Program crash

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\WerFault.exe C:\Windows\SysWOW64\rundll32.exe

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 5088 wrote to memory of 4112 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 5088 wrote to memory of 4112 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 5088 wrote to memory of 4112 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 4112 wrote to memory of 2636 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 4112 wrote to memory of 2636 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 4112 wrote to memory of 2636 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 4112 wrote to memory of 2636 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\rundll32.exe

Processes

C:\Windows\system32\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\nrxdd.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\nrxdd.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\nrxdd.dll,#1

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 4112 -ip 4112

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4112 -s 676

Network

Country Destination Domain Proto
US 8.8.8.8:53 58.55.71.13.in-addr.arpa udp
US 8.8.8.8:53 84.117.19.2.in-addr.arpa udp
US 8.8.8.8:53 136.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 133.211.185.52.in-addr.arpa udp
US 8.8.8.8:53 103.169.127.40.in-addr.arpa udp
US 8.8.8.8:53 198.187.3.20.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 19.158.22.2.in-addr.arpa udp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
US 8.8.8.8:53 48.229.111.52.in-addr.arpa udp

Files

memory/4112-0-0x0000000010000000-0x000000001000D000-memory.dmp

Analysis: behavioral1

Detonation Overview

Submitted

2024-04-02 21:33

Reported

2024-04-02 21:35

Platform

win7-20240221-en

Max time kernel

122s

Max time network

126s

Command Line

"C:\Users\Admin\AppData\Local\Temp\97bc9fc82cdd0607f0bd1e83622b80ba_JaffaCakes118.exe"

Signatures

Xloader

loader xloader

Xloader payload

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

Loads dropped DLL

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\97bc9fc82cdd0607f0bd1e83622b80ba_JaffaCakes118.exe N/A

Enumerates physical storage devices

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\97bc9fc82cdd0607f0bd1e83622b80ba_JaffaCakes118.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2256 wrote to memory of 2680 N/A C:\Users\Admin\AppData\Local\Temp\97bc9fc82cdd0607f0bd1e83622b80ba_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\97bc9fc82cdd0607f0bd1e83622b80ba_JaffaCakes118.exe
PID 2256 wrote to memory of 2680 N/A C:\Users\Admin\AppData\Local\Temp\97bc9fc82cdd0607f0bd1e83622b80ba_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\97bc9fc82cdd0607f0bd1e83622b80ba_JaffaCakes118.exe
PID 2256 wrote to memory of 2680 N/A C:\Users\Admin\AppData\Local\Temp\97bc9fc82cdd0607f0bd1e83622b80ba_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\97bc9fc82cdd0607f0bd1e83622b80ba_JaffaCakes118.exe
PID 2256 wrote to memory of 2680 N/A C:\Users\Admin\AppData\Local\Temp\97bc9fc82cdd0607f0bd1e83622b80ba_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\97bc9fc82cdd0607f0bd1e83622b80ba_JaffaCakes118.exe
PID 2256 wrote to memory of 2680 N/A C:\Users\Admin\AppData\Local\Temp\97bc9fc82cdd0607f0bd1e83622b80ba_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\97bc9fc82cdd0607f0bd1e83622b80ba_JaffaCakes118.exe
PID 2256 wrote to memory of 2680 N/A C:\Users\Admin\AppData\Local\Temp\97bc9fc82cdd0607f0bd1e83622b80ba_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\97bc9fc82cdd0607f0bd1e83622b80ba_JaffaCakes118.exe
PID 2256 wrote to memory of 2680 N/A C:\Users\Admin\AppData\Local\Temp\97bc9fc82cdd0607f0bd1e83622b80ba_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\97bc9fc82cdd0607f0bd1e83622b80ba_JaffaCakes118.exe

Processes

C:\Users\Admin\AppData\Local\Temp\97bc9fc82cdd0607f0bd1e83622b80ba_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\97bc9fc82cdd0607f0bd1e83622b80ba_JaffaCakes118.exe"

C:\Users\Admin\AppData\Local\Temp\97bc9fc82cdd0607f0bd1e83622b80ba_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\97bc9fc82cdd0607f0bd1e83622b80ba_JaffaCakes118.exe"

Network

N/A

Files

\Users\Admin\AppData\Local\Temp\nsi3737.tmp\nrxdd.dll

MD5 5a5c717c752014c115f8cd5269d09230
SHA1 9e98b8f7fc33c2a635b7fafae816e70a991db637
SHA256 bbd19853959f6a7e000b9bd1880416753f9129294efc7b5eba835891b4034459
SHA512 350f82e6eda8687197d911cddd6d84f734e77f63d538062c49298076db297907643f8771544000d4697d5c3f3995b488ef787a5ba132c89f6b2fba6b5be9a361

memory/2256-8-0x0000000010000000-0x000000001000D000-memory.dmp

memory/2680-9-0x0000000000400000-0x0000000000429000-memory.dmp

memory/2256-10-0x0000000010000000-0x000000001000D000-memory.dmp

memory/2680-13-0x0000000000770000-0x0000000000A73000-memory.dmp

memory/2680-14-0x0000000000770000-0x0000000000A73000-memory.dmp