limerat | c2db825f5c24b3e27fba50ad8e93c2319526d65be85604b285faa7a92ff891a5

Analysis

max time kernel
147s
max time network
148s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
28/02/2024, 06:33

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General

Target
ab3b52981d16232d04449801aa486c3f.exe
Size 1.1MB
Sample240228-hbhxtadd6t
SHA256 c2db825f5c24b3e27fba50ad8e93c2319526d65be85604b285faa7a92ff891a5
MD5 ab3b52981d16232d04449801aa486c3f
SHA1 3415575b7f6377209ded6f6e3cbb52fd4f4f37ed
SHA512 7e06d347a1386799a20ec32a52671d118566313f6c4edbe9d3fbb2e845127946c8e3f9c7e0495f6c8a5efe80461e708e3e958bde6243c1daa68c627100f8782d
SSDEEP 24576:4AHnh+eWsN3skA4RV1Hom2KXMmHa97aWtjzjFtuM25F:/h+ZkldoPK8Ya971XjFtAF
MD5 SHA1 SHA512 SSDEEP

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 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-1-5-21-983155329-280873152-1838004294-1000\Control Panel\International\Geo\Nation	sdchange.exe
Key value queried	\REGISTRY\USER\S-1-5-21-983155329-280873152-1838004294-1000\Control Panel\International\Geo\Nation	sdchange.exe
Key value queried	\REGISTRY\USER\S-1-5-21-983155329-280873152-1838004294-1000\Control Panel\International\Geo\Nation	sdchange.exe
Key value queried	\REGISTRY\USER\S-1-5-21-983155329-280873152-1838004294-1000\Control Panel\International\Geo\Nation	ab3b52981d16232d04449801aa486c3f.exe

Executes dropped EXE 3 IoCs

pid	Process
2732	sdchange.exe
4424	sdchange.exe
3056	sdchange.exe

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

Web Service

T1102

flow	ioc
29	pastebin.com
28	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/0x0009000000023202-10.dat	autoit_exe

Suspicious use of SetThreadContext 4 IoCs

description	pid	Process	procid_target
PID 372 set thread context of 3572	372	ab3b52981d16232d04449801aa486c3f.exe	89
PID 2732 set thread context of 2532	2732	sdchange.exe	96
PID 4424 set thread context of 2672	4424	sdchange.exe	103
PID 3056 set thread context of 1116	3056	sdchange.exe	107

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 4 IoCs

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

persistence

Scheduled Task/Job

T1053

pid	Process
3188	schtasks.exe
4808	schtasks.exe
1156	schtasks.exe
4384	schtasks.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3572	RegAsm.exe
Token: SeDebugPrivilege	3572	RegAsm.exe

Suspicious use of WriteProcessMemory 32 IoCs

description	pid	Process	procid_target
PID 372 wrote to memory of 3572	372	ab3b52981d16232d04449801aa486c3f.exe	89
PID 372 wrote to memory of 3572	372	ab3b52981d16232d04449801aa486c3f.exe	89
PID 372 wrote to memory of 3572	372	ab3b52981d16232d04449801aa486c3f.exe	89
PID 372 wrote to memory of 3572	372	ab3b52981d16232d04449801aa486c3f.exe	89
PID 372 wrote to memory of 3572	372	ab3b52981d16232d04449801aa486c3f.exe	89
PID 372 wrote to memory of 4808	372	ab3b52981d16232d04449801aa486c3f.exe	90
PID 372 wrote to memory of 4808	372	ab3b52981d16232d04449801aa486c3f.exe	90
PID 372 wrote to memory of 4808	372	ab3b52981d16232d04449801aa486c3f.exe	90
PID 2732 wrote to memory of 2532	2732	sdchange.exe	96
PID 2732 wrote to memory of 2532	2732	sdchange.exe	96
PID 2732 wrote to memory of 2532	2732	sdchange.exe	96
PID 2732 wrote to memory of 2532	2732	sdchange.exe	96
PID 2732 wrote to memory of 2532	2732	sdchange.exe	96
PID 2732 wrote to memory of 1156	2732	sdchange.exe	97
PID 2732 wrote to memory of 1156	2732	sdchange.exe	97
PID 2732 wrote to memory of 1156	2732	sdchange.exe	97
PID 4424 wrote to memory of 2672	4424	sdchange.exe	103
PID 4424 wrote to memory of 2672	4424	sdchange.exe	103
PID 4424 wrote to memory of 2672	4424	sdchange.exe	103
PID 4424 wrote to memory of 2672	4424	sdchange.exe	103
PID 4424 wrote to memory of 2672	4424	sdchange.exe	103
PID 4424 wrote to memory of 4384	4424	sdchange.exe	104
PID 4424 wrote to memory of 4384	4424	sdchange.exe	104
PID 4424 wrote to memory of 4384	4424	sdchange.exe	104
PID 3056 wrote to memory of 1116	3056	sdchange.exe	107
PID 3056 wrote to memory of 1116	3056	sdchange.exe	107
PID 3056 wrote to memory of 1116	3056	sdchange.exe	107
PID 3056 wrote to memory of 1116	3056	sdchange.exe	107
PID 3056 wrote to memory of 1116	3056	sdchange.exe	107
PID 3056 wrote to memory of 3188	3056	sdchange.exe	108
PID 3056 wrote to memory of 3188	3056	sdchange.exe	108
PID 3056 wrote to memory of 3188	3056	sdchange.exe	108

C:\Users\Admin\AppData\Local\Temp\ab3b52981d16232d04449801aa486c3f.exe
"C:\Users\Admin\AppData\Local\Temp\ab3b52981d16232d04449801aa486c3f.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:372
- 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:3572
- 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:4808

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:2732
- C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
  "C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe"
  2⤵
  PID:2532
- 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:1156

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:4424
- C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
  "C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe"
  2⤵
  PID:2672
- 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:4384

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:3056
- C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
  "C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe"
  2⤵
  PID:1116
- 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:3188

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Persistence

Scheduled Task/Job

T1053

Privilege Escalation

Scheduled Task/Job

T1053

Defense Evasion

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 27580c98df8d064eedaa3a34721af67dc699afd469b66d1c0f066f5d442f589b
MD5 2b5fbb961beb4d96bb1e3d5c4d5b78b6
SHA1 519ee33b54d89a4c9186c9f5bb0cfe708f2f3102
SHA512 c234c6d7f29c10f6070a42f7be2bc9e9bca7fa7b53bd1b3b65e9097241b6393b87ad00353e741da11c8371404e265c29ad271cffb427001f4d012741c26804a7
SSDEEP 24576:4AHnh+eWsN3skA4RV1Hom2KXMmHa97aWtjzjFtuM254:/h+ZkldoPK8Ya971XjFtA4
MD5 SHA1 SHA512 SSDEEP

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memory/372-0-0x0000000001280000-0x0000000001281000-memory.dmp

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memory/1116-39-0x0000000074710000-0x0000000074CC1000-memory.dmp

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memory/1116-37-0x0000000002E90000-0x0000000002EA0000-memory.dmp

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memory/1116-38-0x0000000074710000-0x0000000074CC1000-memory.dmp

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memory/1116-36-0x0000000074710000-0x0000000074CC1000-memory.dmp

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memory/2532-19-0x0000000002280000-0x0000000002290000-memory.dmp

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memory/2532-21-0x0000000074710000-0x0000000074CC1000-memory.dmp

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memory/2532-18-0x0000000074710000-0x0000000074CC1000-memory.dmp

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memory/2532-13-0x0000000000170000-0x000000000017C000-memory.dmp

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memory/2672-28-0x0000000074710000-0x0000000074CC1000-memory.dmp

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memory/2672-23-0x00000000005C0000-0x00000000005CC000-memory.dmp

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memory/2672-29-0x00000000021B0000-0x00000000021C0000-memory.dmp

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memory/2672-30-0x0000000074710000-0x0000000074CC1000-memory.dmp

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memory/3572-1-0x0000000000400000-0x000000000040C000-memory.dmp

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memory/3572-17-0x0000000074710000-0x0000000074CC1000-memory.dmp

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memory/3572-12-0x0000000074710000-0x0000000074CC1000-memory.dmp

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memory/3572-7-0x0000000074710000-0x0000000074CC1000-memory.dmp

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memory/3572-6-0x0000000002EC0000-0x0000000002ED0000-memory.dmp

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memory/3572-5-0x0000000074710000-0x0000000074CC1000-memory.dmp

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Analysis

Sharing

General

Malware Config

Extracted

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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