limerat | 0ab7b0b931490bf95e8dd6ec8e9f3d014b5c93b2ba3b3a32445f481f2db2bdb6

Analysis

max time kernel
205s
max time network
216s
platform
windows10-2004_x64
resource
win10v2004-20220414-en
submitted
12/05/2022, 11:45

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General

Target
0ab7b0b931490bf95e8dd6ec8e9f3d014b5c93b2ba3b3a32445f481f2db2bdb6.exe
Size 1.1MB
Sample220512-nwptrafhhr
SHA256 0ab7b0b931490bf95e8dd6ec8e9f3d014b5c93b2ba3b3a32445f481f2db2bdb6
MD5 0f12d87b67f6175122a15eadddfa53bb
SHA1 477c5eacc92fb3e7c7fc149fc394c02e1a28eebb
SHA512 cae908d4849d91645c10bb43cd697696c5b1866b71ef04767f2d88523d6a1e8a1df44b0ee528c13d2e1563db10ce45c3127deb985b62f08c61d658c5a4ec0ae9
MD5 SHA1 SHA512

Score

10^/10

limerat rat

Malware Config

Extracted

Family

limerat

Wallets

1JBKLGyE6AnRGvk92A8x3m8qmXfh3fcEty

Attributes

aes_key
nulled
antivm
true
c2_url
https://pastebin.com/raw/cXuQ0V20
delay
3
download_payload
false
install
false
install_name
Winservices.exe
main_folder
AppData
pin_spread
false
sub_folder
\
usb_spread
true

Signatures

LimeRAT
Simple yet powerful RAT for Windows machines written in .NET.
rat limerat

Executes dropped EXE 3 IoCs

pid	Process
4260	sdchange.exe
5020	sdchange.exe
4704	sdchange.exe

Checks computer location settings 2 TTPs 4 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\Control Panel\International\Geo\Nation	0ab7b0b931490bf95e8dd6ec8e9f3d014b5c93b2ba3b3a32445f481f2db2bdb6.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\Control Panel\International\Geo\Nation	sdchange.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\Control Panel\International\Geo\Nation	sdchange.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\Control Panel\International\Geo\Nation	sdchange.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs

Web Service
T1102

Maps connected drives based on registry 3 TTPs 2 IoCs

Disk information is often read in order to detect sandboxing environments.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	RegAsm.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\disk\Enum\0	RegAsm.exe

AutoIT Executable 4 IoCs

AutoIT scripts compiled to PE executables.

resource	yara_rule
behavioral2/files/0x00060000000231cc-137.dat	autoit_exe
behavioral2/files/0x00060000000231cc-138.dat	autoit_exe
behavioral2/files/0x00060000000231cc-146.dat	autoit_exe
behavioral2/files/0x00060000000231cc-155.dat	autoit_exe

Suspicious use of SetThreadContext 4 IoCs

description	pid	Process	procid_target
PID 1908 set thread context of 2680	1908	0ab7b0b931490bf95e8dd6ec8e9f3d014b5c93b2ba3b3a32445f481f2db2bdb6.exe	79
PID 4260 set thread context of 764	4260	sdchange.exe	85
PID 5020 set thread context of 1040	5020	sdchange.exe	89
PID 4704 set thread context of 3796	4704	sdchange.exe	99

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Creates scheduled task(s) 1 TTPs 4 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence

Scheduled Task

T1053

pid	Process
2284	schtasks.exe
3000	schtasks.exe
4500	schtasks.exe
4420	schtasks.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2680	RegAsm.exe
Token: SeDebugPrivilege	2680	RegAsm.exe

Suspicious use of WriteProcessMemory 32 IoCs

description	pid	Process	procid_target
PID 1908 wrote to memory of 2680	1908	0ab7b0b931490bf95e8dd6ec8e9f3d014b5c93b2ba3b3a32445f481f2db2bdb6.exe	79
PID 1908 wrote to memory of 2680	1908	0ab7b0b931490bf95e8dd6ec8e9f3d014b5c93b2ba3b3a32445f481f2db2bdb6.exe	79
PID 1908 wrote to memory of 2680	1908	0ab7b0b931490bf95e8dd6ec8e9f3d014b5c93b2ba3b3a32445f481f2db2bdb6.exe	79
PID 1908 wrote to memory of 2680	1908	0ab7b0b931490bf95e8dd6ec8e9f3d014b5c93b2ba3b3a32445f481f2db2bdb6.exe	79
PID 1908 wrote to memory of 2680	1908	0ab7b0b931490bf95e8dd6ec8e9f3d014b5c93b2ba3b3a32445f481f2db2bdb6.exe	79
PID 1908 wrote to memory of 3000	1908	0ab7b0b931490bf95e8dd6ec8e9f3d014b5c93b2ba3b3a32445f481f2db2bdb6.exe	80
PID 1908 wrote to memory of 3000	1908	0ab7b0b931490bf95e8dd6ec8e9f3d014b5c93b2ba3b3a32445f481f2db2bdb6.exe	80
PID 1908 wrote to memory of 3000	1908	0ab7b0b931490bf95e8dd6ec8e9f3d014b5c93b2ba3b3a32445f481f2db2bdb6.exe	80
PID 4260 wrote to memory of 764	4260	sdchange.exe	85
PID 4260 wrote to memory of 764	4260	sdchange.exe	85
PID 4260 wrote to memory of 764	4260	sdchange.exe	85
PID 4260 wrote to memory of 764	4260	sdchange.exe	85
PID 4260 wrote to memory of 764	4260	sdchange.exe	85
PID 4260 wrote to memory of 4500	4260	sdchange.exe	86
PID 4260 wrote to memory of 4500	4260	sdchange.exe	86
PID 4260 wrote to memory of 4500	4260	sdchange.exe	86
PID 5020 wrote to memory of 1040	5020	sdchange.exe	89
PID 5020 wrote to memory of 1040	5020	sdchange.exe	89
PID 5020 wrote to memory of 1040	5020	sdchange.exe	89
PID 5020 wrote to memory of 1040	5020	sdchange.exe	89
PID 5020 wrote to memory of 1040	5020	sdchange.exe	89
PID 5020 wrote to memory of 4420	5020	sdchange.exe	90
PID 5020 wrote to memory of 4420	5020	sdchange.exe	90
PID 5020 wrote to memory of 4420	5020	sdchange.exe	90
PID 4704 wrote to memory of 3796	4704	sdchange.exe	99
PID 4704 wrote to memory of 3796	4704	sdchange.exe	99
PID 4704 wrote to memory of 3796	4704	sdchange.exe	99
PID 4704 wrote to memory of 3796	4704	sdchange.exe	99
PID 4704 wrote to memory of 3796	4704	sdchange.exe	99
PID 4704 wrote to memory of 2284	4704	sdchange.exe	100
PID 4704 wrote to memory of 2284	4704	sdchange.exe	100
PID 4704 wrote to memory of 2284	4704	sdchange.exe	100

C:\Users\Admin\AppData\Local\Temp\0ab7b0b931490bf95e8dd6ec8e9f3d014b5c93b2ba3b3a32445f481f2db2bdb6.exe
"C:\Users\Admin\AppData\Local\Temp\0ab7b0b931490bf95e8dd6ec8e9f3d014b5c93b2ba3b3a32445f481f2db2bdb6.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1908
- C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
  "C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe"
  2⤵
  - Maps connected drives based on registry
  - Suspicious use of AdjustPrivilegeToken
  PID:2680
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\SysWOW64\schtasks.exe" /create /tn SettingSyncHost /tr "C:\Users\Admin\secinit\sdchange.exe" /sc minute /mo 1 /F
  2⤵
  - Creates scheduled task(s)
  PID:3000

C:\Users\Admin\secinit\sdchange.exe
C:\Users\Admin\secinit\sdchange.exe
1⤵
- Executes dropped EXE
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4260
- C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
  "C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe"
  2⤵
  PID:764
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\SysWOW64\schtasks.exe" /create /tn SettingSyncHost /tr "C:\Users\Admin\secinit\sdchange.exe" /sc minute /mo 1 /F
  2⤵
  - Creates scheduled task(s)
  PID:4500

C:\Users\Admin\secinit\sdchange.exe
C:\Users\Admin\secinit\sdchange.exe
1⤵
- Executes dropped EXE
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:5020
- C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
  "C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe"
  2⤵
  PID:1040
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\SysWOW64\schtasks.exe" /create /tn SettingSyncHost /tr "C:\Users\Admin\secinit\sdchange.exe" /sc minute /mo 1 /F
  2⤵
  - Creates scheduled task(s)
  PID:4420

C:\Users\Admin\secinit\sdchange.exe
C:\Users\Admin\secinit\sdchange.exe
1⤵
- Executes dropped EXE
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4704
- C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
  "C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe"
  2⤵
  PID:3796
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\SysWOW64\schtasks.exe" /create /tn SettingSyncHost /tr "C:\Users\Admin\secinit\sdchange.exe" /sc minute /mo 1 /F
  2⤵
  - Creates scheduled task(s)
  PID:2284

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

T1053

Persistence

Scheduled Task

T1053

Privilege Escalation

Scheduled Task

T1053

Defense Evasion

Web Service

T1102

Credential Access

Discovery

Peripheral Device Discovery

T1120

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Web Service

T1102

Exfiltration

Impact

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Downloads

RegAsm.exe.log

Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v2.0_32\UsageLogs\RegAsm.exe.log
Size 316B
SHA256 8a7cb420c82edf1bb2c7bdfef52091e5169fabaecc370e120985e91406fcbbec
MD5 9f893d94b017a0684012d50319c9ffbe
SHA1 140cc2cb6b2520ba4f9a1f666a5f679853472793
SHA512 4b7df94d3622b82d852b0f532d7fd810ca2113d7b737ec417023d5b2142e9e79414a06d22647d73f8bc114f8e871a3a741a479b0aba48892f9078975ec78acba
MD5 SHA1 SHA512

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sdchange.exe

Path C:\Users\Admin\secinit\sdchange.exe
Size 1.1MB
SHA256 294a34cebf7e6c2eb598a555bd924415a642c234d0e1cd27fa4decbd1a98d01f
MD5 1cb8b669539d8e45f0a77052190788b9
SHA1 5a3ee5e6e3211cd8f6a30718f7306ee3fc5c6ccb
SHA512 a3f7d0488efab7b5296d3c2a3bb874192a98240a32c30144744ba893c9f00939263096beb1a6752d253592af0bfc6f03d64c54587e98c1a9f47f37affdc09779
SSDEEP 24576:4AHnh+eWsN3skA4RV1Hom2KXMmHa97aWtjzjFtuM25V:/h+ZkldoPK8Ya971XjFtAV
MD5 SHA1 SHA512 SSDEEP

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sdchange.exe

Path C:\Users\Admin\secinit\sdchange.exe
Size 1.1MB
SHA256 294a34cebf7e6c2eb598a555bd924415a642c234d0e1cd27fa4decbd1a98d01f
MD5 1cb8b669539d8e45f0a77052190788b9
SHA1 5a3ee5e6e3211cd8f6a30718f7306ee3fc5c6ccb
SHA512 a3f7d0488efab7b5296d3c2a3bb874192a98240a32c30144744ba893c9f00939263096beb1a6752d253592af0bfc6f03d64c54587e98c1a9f47f37affdc09779
SSDEEP 24576:4AHnh+eWsN3skA4RV1Hom2KXMmHa97aWtjzjFtuM25V:/h+ZkldoPK8Ya971XjFtAV
MD5 SHA1 SHA512 SSDEEP

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sdchange.exe

Path C:\Users\Admin\secinit\sdchange.exe
Size 1.1MB
SHA256 294a34cebf7e6c2eb598a555bd924415a642c234d0e1cd27fa4decbd1a98d01f
MD5 1cb8b669539d8e45f0a77052190788b9
SHA1 5a3ee5e6e3211cd8f6a30718f7306ee3fc5c6ccb
SHA512 a3f7d0488efab7b5296d3c2a3bb874192a98240a32c30144744ba893c9f00939263096beb1a6752d253592af0bfc6f03d64c54587e98c1a9f47f37affdc09779
SSDEEP 24576:4AHnh+eWsN3skA4RV1Hom2KXMmHa97aWtjzjFtuM25V:/h+ZkldoPK8Ya971XjFtAV
MD5 SHA1 SHA512 SSDEEP

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sdchange.exe

Path C:\Users\Admin\secinit\sdchange.exe
Size 1.1MB
SHA256 294a34cebf7e6c2eb598a555bd924415a642c234d0e1cd27fa4decbd1a98d01f
MD5 1cb8b669539d8e45f0a77052190788b9
SHA1 5a3ee5e6e3211cd8f6a30718f7306ee3fc5c6ccb
SHA512 a3f7d0488efab7b5296d3c2a3bb874192a98240a32c30144744ba893c9f00939263096beb1a6752d253592af0bfc6f03d64c54587e98c1a9f47f37affdc09779
SSDEEP 24576:4AHnh+eWsN3skA4RV1Hom2KXMmHa97aWtjzjFtuM25V:/h+ZkldoPK8Ya971XjFtAV
MD5 SHA1 SHA512 SSDEEP

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memory/764-145-0x00000000732D0000-0x0000000073881000-memory.dmp

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memory/764-140-0x0000000000400000-0x000000000040C000-memory.dmp

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memory/1040-148-0x00000000003E0000-0x00000000003EC000-memory.dmp

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memory/1040-154-0x00000000732D0000-0x0000000073881000-memory.dmp

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memory/2680-136-0x00000000732D0000-0x0000000073881000-memory.dmp

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memory/2680-131-0x0000000000140000-0x000000000014C000-memory.dmp

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memory/3796-162-0x00000000732D0000-0x0000000073881000-memory.dmp

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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