limerat | d632c85338f64894158dcc17ee01ea7f4d338916ced96e1c1b572d843d15e1c1

General

Target

b9c8909fb90c1cef16563cd6be9f561b.exe
Size

1.1MB
MD5

b9c8909fb90c1cef16563cd6be9f561b
SHA1

afb8a215aba26131a31e76005b8b6356dec87a6b
SHA256

d632c85338f64894158dcc17ee01ea7f4d338916ced96e1c1b572d843d15e1c1
SHA512

3b35e3157585996567856a9f765f4d6d9b8734653e6ad42c072901d0341f8295730799047fc2881418c82ddbc0a4befcc2bc956c3a79fb9bedabf25e6efaadcf
SSDEEP

24576:4AHnh+eWsN3skA4RV1Hom2KXMmHa97aWtjzjFtuM25Z:/h+ZkldoPK8Ya971XjFtAZ

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

Extracted

Family

limerat

Attributes

antivm
false
c2_url
https://pastebin.com/raw/cXuQ0V20
download_payload
false
install
false
pin_spread
false
usb_spread
false

Signatures

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

Checks computer location settings 2 TTPs 3 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-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation	sdchange.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation	b9c8909fb90c1cef16563cd6be9f561b.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation	sdchange.exe

Executes dropped EXE 2 IoCs

pid	Process
4064	sdchange.exe
1236	sdchange.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs

Web Service

T1102

flow	ioc
38	pastebin.com
39	pastebin.com

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 1 IoCs

AutoIT scripts compiled to PE executables.

resource	yara_rule
behavioral2/files/0x000a00000002326c-13.dat	autoit_exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 116 set thread context of 1592	116	b9c8909fb90c1cef16563cd6be9f561b.exe	98
PID 4064 set thread context of 2908	4064	sdchange.exe	114
PID 1236 set thread context of 1064	1236	sdchange.exe	123

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

System Information Discovery
T1082

Creates scheduled task(s) 1 TTPs 3 IoCs

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

persistence

Scheduled Task/Job

T1053

pid	Process
2172	schtasks.exe
2568	schtasks.exe
4604	schtasks.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1592	RegAsm.exe
Token: SeDebugPrivilege	1592	RegAsm.exe

Suspicious use of WriteProcessMemory 24 IoCs

description	pid	Process	procid_target
PID 116 wrote to memory of 1592	116	b9c8909fb90c1cef16563cd6be9f561b.exe	98
PID 116 wrote to memory of 1592	116	b9c8909fb90c1cef16563cd6be9f561b.exe	98
PID 116 wrote to memory of 1592	116	b9c8909fb90c1cef16563cd6be9f561b.exe	98
PID 116 wrote to memory of 1592	116	b9c8909fb90c1cef16563cd6be9f561b.exe	98
PID 116 wrote to memory of 1592	116	b9c8909fb90c1cef16563cd6be9f561b.exe	98
PID 116 wrote to memory of 2172	116	b9c8909fb90c1cef16563cd6be9f561b.exe	100
PID 116 wrote to memory of 2172	116	b9c8909fb90c1cef16563cd6be9f561b.exe	100
PID 116 wrote to memory of 2172	116	b9c8909fb90c1cef16563cd6be9f561b.exe	100
PID 4064 wrote to memory of 2908	4064	sdchange.exe	114
PID 4064 wrote to memory of 2908	4064	sdchange.exe	114
PID 4064 wrote to memory of 2908	4064	sdchange.exe	114
PID 4064 wrote to memory of 2908	4064	sdchange.exe	114
PID 4064 wrote to memory of 2908	4064	sdchange.exe	114
PID 4064 wrote to memory of 2568	4064	sdchange.exe	115
PID 4064 wrote to memory of 2568	4064	sdchange.exe	115
PID 4064 wrote to memory of 2568	4064	sdchange.exe	115
PID 1236 wrote to memory of 1064	1236	sdchange.exe	123
PID 1236 wrote to memory of 1064	1236	sdchange.exe	123
PID 1236 wrote to memory of 1064	1236	sdchange.exe	123
PID 1236 wrote to memory of 1064	1236	sdchange.exe	123
PID 1236 wrote to memory of 1064	1236	sdchange.exe	123
PID 1236 wrote to memory of 4604	1236	sdchange.exe	125
PID 1236 wrote to memory of 4604	1236	sdchange.exe	125
PID 1236 wrote to memory of 4604	1236	sdchange.exe	125

C:\Users\Admin\AppData\Local\Temp\b9c8909fb90c1cef16563cd6be9f561b.exe
"C:\Users\Admin\AppData\Local\Temp\b9c8909fb90c1cef16563cd6be9f561b.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:116
- 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:1592
- 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:2172

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=3756 --field-trial-handle=2248,i,10247514684337323751,15511974759131734137,262144 --variations-seed-version /prefetch:8
1⤵
PID:1184

C:\Users\Admin\secinit\sdchange.exe
C:\Users\Admin\secinit\sdchange.exe
1⤵
- Checks computer location settings
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4064
- C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
  "C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe"
  2⤵
  PID:2908
- 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:2568

C:\Users\Admin\secinit\sdchange.exe
C:\Users\Admin\secinit\sdchange.exe
1⤵
- Checks computer location settings
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1236
- C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
  "C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe"
  2⤵
  PID:1064
- 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:4604

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

1

T1053

Persistence

Scheduled Task/Job

1

T1053

Privilege Escalation

Scheduled Task/Job

1

T1053

Defense Evasion

Credential Access

Discovery

Peripheral Device Discovery

Query Registry

System Information Discovery

3

T1082

Lateral Movement

Collection

Command and Control

Web Service

1

T1102

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v2.0_32\UsageLogs\RegAsm.exe.log

Filesize
316B

MD5
9f893d94b017a0684012d50319c9ffbe

SHA1
140cc2cb6b2520ba4f9a1f666a5f679853472793

SHA256
8a7cb420c82edf1bb2c7bdfef52091e5169fabaecc370e120985e91406fcbbec

SHA512
4b7df94d3622b82d852b0f532d7fd810ca2113d7b737ec417023d5b2142e9e79414a06d22647d73f8bc114f8e871a3a741a479b0aba48892f9078975ec78acba

Download Submit
C:\Users\Admin\secinit\sdchange.exe

Filesize
1.1MB

MD5
4bf64e41f618e3e26a9c80f3639abab8

SHA1
90877c6878e02dd3aa96ca97c76d72c70e2be621

SHA256
2639e03c1315686294c7feb726c4ad96a518f154d146d6b178d6f4dcfd9c8ac8

SHA512
e6fd6badb6ef04c50e5327069fd2c3391a2ea512763cb98920ee21c46f73b89c5eb2706e2f203ea2bc130c671e70025cfd8871bbcad3602fd4a72c2c77d9aacc

Download Submit
memory/116-0-0x0000000003F50000-0x0000000003F51000-memory.dmp

Filesize
4KB

Download
memory/1064-33-0x0000000073EC0000-0x0000000074471000-memory.dmp

Filesize
5.7MB

Download
memory/1064-32-0x0000000073EC0000-0x0000000074471000-memory.dmp

Filesize
5.7MB

Download
memory/1064-31-0x0000000002DC0000-0x0000000002DD0000-memory.dmp

Filesize
64KB

Download
memory/1064-30-0x0000000073EC0000-0x0000000074471000-memory.dmp

Filesize
5.7MB

Download
memory/1592-7-0x0000000002D90000-0x0000000002DA0000-memory.dmp

Filesize
64KB

Download
memory/1592-12-0x0000000002D90000-0x0000000002DA0000-memory.dmp

Filesize
64KB

Download
memory/1592-11-0x0000000073EC0000-0x0000000074471000-memory.dmp

Filesize
5.7MB

Download
memory/1592-10-0x0000000073EC0000-0x0000000074471000-memory.dmp

Filesize
5.7MB

Download
memory/1592-6-0x0000000073EC0000-0x0000000074471000-memory.dmp

Filesize
5.7MB

Download
memory/1592-5-0x0000000073EC0000-0x0000000074471000-memory.dmp

Filesize
5.7MB

Download
memory/1592-1-0x0000000000400000-0x000000000040C000-memory.dmp

Filesize
48KB

Download
memory/2908-19-0x0000000073EC0000-0x0000000074471000-memory.dmp

Filesize
5.7MB

Download
memory/2908-20-0x0000000002970000-0x0000000002980000-memory.dmp

Filesize
64KB

Download
memory/2908-21-0x0000000073EC0000-0x0000000074471000-memory.dmp

Filesize
5.7MB

Download
memory/2908-23-0x0000000073EC0000-0x0000000074471000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads