Malware Analysis Report

2024-09-11 10:04

Sample ID 240402-bthlfadb73
Target ad997dc4ee32ab469e45009f218175d0.exe
SHA256 a1f8bb5990775f277540eb4c7579695477445afd90262cb819567cc9b3042166
Tags
zgrat limerat rat
score
10/10

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
10/10

SHA256

a1f8bb5990775f277540eb4c7579695477445afd90262cb819567cc9b3042166

Threat Level: Known bad

The file ad997dc4ee32ab469e45009f218175d0.exe was found to be: Known bad.

Malicious Activity Summary

zgrat limerat rat

Detect ZGRat V1

Zgrat family

LimeRAT

ZGRat

Executes dropped EXE

Loads dropped DLL

.NET Reactor proctector

Unsigned PE

Enumerates physical storage devices

Creates scheduled task(s)

Suspicious use of WriteProcessMemory

MITRE ATT&CK Matrix V13

Initial Access
TA0001
Execution
TA0002
Scheduled Task/Job
T1053
Persistence
TA0003
Scheduled Task/Job
T1053
Privilege Escalation
TA0004
Scheduled Task/Job
T1053
Defense Evasion
TA0005
Credential Access
TA0006
Discovery
TA0007
System Information Discovery
T1082
Lateral Movement
TA0008
Collection
TA0009
Exfiltration
TA0010
Command and Control
TA0011
Impact
TA0040
Resource Development
TA0042
Reconnaissance
TA0043

Analysis: static1

Detonation Overview

Reported

2024-04-02 01:26

Signatures

Detect ZGRat V1

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

Zgrat family

zgrat

.NET Reactor proctector

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-04-02 01:26

Reported

2024-04-02 01:28

Platform

win7-20240221-en

Max time kernel

126s

Max time network

118s

Command Line

"C:\Users\Admin\AppData\Local\Temp\ad997dc4ee32ab469e45009f218175d0.exe"

Signatures

Detect ZGRat V1

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

LimeRAT

rat limerat

ZGRat

rat zgrat

.NET Reactor proctector

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

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Roaming\Necobit.exe N/A

Loads dropped DLL

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\ad997dc4ee32ab469e45009f218175d0.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\ad997dc4ee32ab469e45009f218175d0.exe N/A

Enumerates physical storage devices

Creates scheduled task(s)

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

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 860 wrote to memory of 1008 N/A C:\Users\Admin\AppData\Local\Temp\ad997dc4ee32ab469e45009f218175d0.exe C:\Windows\SysWOW64\schtasks.exe
PID 860 wrote to memory of 1008 N/A C:\Users\Admin\AppData\Local\Temp\ad997dc4ee32ab469e45009f218175d0.exe C:\Windows\SysWOW64\schtasks.exe
PID 860 wrote to memory of 1008 N/A C:\Users\Admin\AppData\Local\Temp\ad997dc4ee32ab469e45009f218175d0.exe C:\Windows\SysWOW64\schtasks.exe
PID 860 wrote to memory of 1008 N/A C:\Users\Admin\AppData\Local\Temp\ad997dc4ee32ab469e45009f218175d0.exe C:\Windows\SysWOW64\schtasks.exe
PID 860 wrote to memory of 2268 N/A C:\Users\Admin\AppData\Local\Temp\ad997dc4ee32ab469e45009f218175d0.exe C:\Users\Admin\AppData\Roaming\Necobit.exe
PID 860 wrote to memory of 2268 N/A C:\Users\Admin\AppData\Local\Temp\ad997dc4ee32ab469e45009f218175d0.exe C:\Users\Admin\AppData\Roaming\Necobit.exe
PID 860 wrote to memory of 2268 N/A C:\Users\Admin\AppData\Local\Temp\ad997dc4ee32ab469e45009f218175d0.exe C:\Users\Admin\AppData\Roaming\Necobit.exe
PID 860 wrote to memory of 2268 N/A C:\Users\Admin\AppData\Local\Temp\ad997dc4ee32ab469e45009f218175d0.exe C:\Users\Admin\AppData\Roaming\Necobit.exe

Processes

C:\Users\Admin\AppData\Local\Temp\ad997dc4ee32ab469e45009f218175d0.exe

"C:\Users\Admin\AppData\Local\Temp\ad997dc4ee32ab469e45009f218175d0.exe"

C:\Windows\SysWOW64\schtasks.exe

schtasks /create /f /sc ONLOGON /RL HIGHEST /tn LimeRAT-Admin /tr "'C:\Users\Admin\AppData\Roaming\Necobit.exe'"

C:\Users\Admin\AppData\Roaming\Necobit.exe

"C:\Users\Admin\AppData\Roaming\Necobit.exe"

Network

N/A

Files

memory/860-0-0x0000000000AF0000-0x0000000000B44000-memory.dmp

memory/860-1-0x0000000074A20000-0x000000007510E000-memory.dmp

memory/860-2-0x0000000004DA0000-0x0000000004DE0000-memory.dmp

memory/860-3-0x0000000074A20000-0x000000007510E000-memory.dmp

\Users\Admin\AppData\Roaming\Necobit.exe

MD5 ad997dc4ee32ab469e45009f218175d0
SHA1 17ef145486c494ea9c727972c501471e720887f0
SHA256 a1f8bb5990775f277540eb4c7579695477445afd90262cb819567cc9b3042166
SHA512 727aceb3edd5dfbbbad84e1aef4beb3773313378bd4fa6cd77800d6cf578ba740a5ebc1f3740593071a26daa2cf91e49243fa4ba043d934c8bd936a1526c18d0

memory/2268-15-0x0000000074A20000-0x000000007510E000-memory.dmp

memory/860-16-0x0000000074A20000-0x000000007510E000-memory.dmp

memory/2268-17-0x0000000000F20000-0x0000000000F74000-memory.dmp

memory/2268-18-0x0000000000810000-0x0000000000850000-memory.dmp

memory/2268-19-0x0000000074A20000-0x000000007510E000-memory.dmp

memory/2268-20-0x0000000000810000-0x0000000000850000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-04-02 01:26

Reported

2024-04-02 01:28

Platform

win10v2004-20240226-en

Max time kernel

151s

Max time network

159s

Command Line

"C:\Users\Admin\AppData\Local\Temp\ad997dc4ee32ab469e45009f218175d0.exe"

Signatures

Detect ZGRat V1

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

LimeRAT

rat limerat

ZGRat

rat zgrat

.NET Reactor proctector

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

Creates scheduled task(s)

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

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 684 wrote to memory of 3036 N/A C:\Users\Admin\AppData\Local\Temp\ad997dc4ee32ab469e45009f218175d0.exe C:\Windows\SysWOW64\schtasks.exe
PID 684 wrote to memory of 3036 N/A C:\Users\Admin\AppData\Local\Temp\ad997dc4ee32ab469e45009f218175d0.exe C:\Windows\SysWOW64\schtasks.exe
PID 684 wrote to memory of 3036 N/A C:\Users\Admin\AppData\Local\Temp\ad997dc4ee32ab469e45009f218175d0.exe C:\Windows\SysWOW64\schtasks.exe

Processes

C:\Users\Admin\AppData\Local\Temp\ad997dc4ee32ab469e45009f218175d0.exe

"C:\Users\Admin\AppData\Local\Temp\ad997dc4ee32ab469e45009f218175d0.exe"

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe

"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=1348 --field-trial-handle=2284,i,15722001240173834669,15048020084704567542,262144 --variations-seed-version /prefetch:8

C:\Windows\SysWOW64\schtasks.exe

schtasks /create /f /sc ONLOGON /RL HIGHEST /tn LimeRAT-Admin /tr "'C:\Users\Admin\AppData\Roaming\Necobit.exe'"

Network

Country Destination Domain Proto
US 8.8.8.8:53 133.211.185.52.in-addr.arpa udp
US 8.8.8.8:53 218.135.221.88.in-addr.arpa udp
US 8.8.8.8:53 chromewebstore.googleapis.com udp
US 8.8.8.8:53 chromewebstore.googleapis.com udp
GB 172.217.169.42:443 chromewebstore.googleapis.com tcp
US 8.8.8.8:53 pki.goog udp
US 8.8.8.8:53 pki.goog udp
US 216.239.32.29:80 pki.goog tcp
US 8.8.8.8:53 42.169.217.172.in-addr.arpa udp
US 8.8.8.8:53 4.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 29.32.239.216.in-addr.arpa udp
US 8.8.8.8:53 13.86.106.20.in-addr.arpa udp
US 8.8.8.8:53 157.123.68.40.in-addr.arpa udp
US 8.8.8.8:53 15.164.165.52.in-addr.arpa udp
US 8.8.8.8:53 104.219.191.52.in-addr.arpa udp
US 8.8.8.8:53 14.227.111.52.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 85.65.42.20.in-addr.arpa udp

Files

memory/684-0-0x00000000744E0000-0x0000000074C90000-memory.dmp

memory/684-1-0x00000000007B0000-0x0000000000804000-memory.dmp

memory/684-2-0x0000000005230000-0x0000000005240000-memory.dmp

memory/684-3-0x00000000052E0000-0x000000000537C000-memory.dmp

memory/684-4-0x00000000744E0000-0x0000000074C90000-memory.dmp

memory/684-5-0x0000000005230000-0x0000000005240000-memory.dmp

memory/684-6-0x0000000001130000-0x0000000001196000-memory.dmp

memory/684-7-0x0000000005F70000-0x0000000006514000-memory.dmp