limerat | a491a0d38b7f90a19b5fea4beb3dd65468517cd424024ea9bbc18524835fc6f7

General

Target

cd348d8f8a74c9ceba525ccbf26a7e70_exe32.exe
Size

1.1MB
MD5

cd348d8f8a74c9ceba525ccbf26a7e70
SHA1

55a371874bf3b68925a9c98fe91aba703aec0bc6
SHA256

a491a0d38b7f90a19b5fea4beb3dd65468517cd424024ea9bbc18524835fc6f7
SHA512

0ce3ba5abd2a4dd3a6d523fffbdc83fc634ffaccf338b3a2ad7677f0d2cfe17da7c94bce8715ce2ceff75b0283ff339fff61ac8ca6a4953bbcf7cb6fa67b96a7
SSDEEP

24576:4AHnh+eWsN3skA4RV1Hom2KXMmHa97aWtjzjFtuM250:/h+ZkldoPK8Ya971XjFtA0

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

Processes:

cd348d8f8a74c9ceba525ccbf26a7e70_exe32.exesdchange.exesdchange.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-919254492-3979293997-764407192-1000\Control Panel\International\Geo\Nation	cd348d8f8a74c9ceba525ccbf26a7e70_exe32.exe
Key value queried	\REGISTRY\USER\S-1-5-21-919254492-3979293997-764407192-1000\Control Panel\International\Geo\Nation	sdchange.exe
Key value queried	\REGISTRY\USER\S-1-5-21-919254492-3979293997-764407192-1000\Control Panel\International\Geo\Nation	sdchange.exe

Executes dropped EXE 2 IoCs

Processes:

sdchange.exesdchange.exe

pid process

4816 sdchange.exe
4704 sdchange.exe
Legitimate hosting services abused for malware hosting/C2 1 TTPs

Web Service
T1102

pid	process
4816	sdchange.exe
4704	sdchange.exe

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

Processes:

RegAsm.exe

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 3 IoCs

AutoIT scripts compiled to PE executables.

Processes:

resource	yara_rule
C:\Users\Admin\secinit\sdchange.exe	autoit_exe
C:\Users\Admin\secinit\sdchange.exe	autoit_exe
C:\Users\Admin\secinit\sdchange.exe	autoit_exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

cd348d8f8a74c9ceba525ccbf26a7e70_exe32.exesdchange.exesdchange.exe

description	pid	process	target process
PID 4524 set thread context of 1152	4524	cd348d8f8a74c9ceba525ccbf26a7e70_exe32.exe	RegAsm.exe
PID 4816 set thread context of 3356	4816	sdchange.exe	RegAsm.exe
PID 4704 set thread context of 1832	4704	sdchange.exe	RegAsm.exe

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

Processes:

schtasks.exeschtasks.exeschtasks.exe

pid process

4944 schtasks.exe
2720 schtasks.exe
1220 schtasks.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

RegAsm.exe

description pid process

Token: SeDebugPrivilege 1152 RegAsm.exe
Token: SeDebugPrivilege 1152 RegAsm.exe

pid	process
4944	schtasks.exe
2720	schtasks.exe
1220	schtasks.exe

description	pid	process
Token: SeDebugPrivilege	1152	RegAsm.exe
Token: SeDebugPrivilege	1152	RegAsm.exe

Suspicious use of WriteProcessMemory 24 IoCs

Processes:

cd348d8f8a74c9ceba525ccbf26a7e70_exe32.exesdchange.exesdchange.exe

description	pid	process	target process
PID 4524 wrote to memory of 1152	4524	cd348d8f8a74c9ceba525ccbf26a7e70_exe32.exe	RegAsm.exe
PID 4524 wrote to memory of 1152	4524	cd348d8f8a74c9ceba525ccbf26a7e70_exe32.exe	RegAsm.exe
PID 4524 wrote to memory of 1152	4524	cd348d8f8a74c9ceba525ccbf26a7e70_exe32.exe	RegAsm.exe
PID 4524 wrote to memory of 1152	4524	cd348d8f8a74c9ceba525ccbf26a7e70_exe32.exe	RegAsm.exe
PID 4524 wrote to memory of 1152	4524	cd348d8f8a74c9ceba525ccbf26a7e70_exe32.exe	RegAsm.exe
PID 4524 wrote to memory of 2720	4524	cd348d8f8a74c9ceba525ccbf26a7e70_exe32.exe	schtasks.exe
PID 4524 wrote to memory of 2720	4524	cd348d8f8a74c9ceba525ccbf26a7e70_exe32.exe	schtasks.exe
PID 4524 wrote to memory of 2720	4524	cd348d8f8a74c9ceba525ccbf26a7e70_exe32.exe	schtasks.exe
PID 4816 wrote to memory of 3356	4816	sdchange.exe	RegAsm.exe
PID 4816 wrote to memory of 3356	4816	sdchange.exe	RegAsm.exe
PID 4816 wrote to memory of 3356	4816	sdchange.exe	RegAsm.exe
PID 4816 wrote to memory of 3356	4816	sdchange.exe	RegAsm.exe
PID 4816 wrote to memory of 3356	4816	sdchange.exe	RegAsm.exe
PID 4816 wrote to memory of 1220	4816	sdchange.exe	schtasks.exe
PID 4816 wrote to memory of 1220	4816	sdchange.exe	schtasks.exe
PID 4816 wrote to memory of 1220	4816	sdchange.exe	schtasks.exe
PID 4704 wrote to memory of 1832	4704	sdchange.exe	RegAsm.exe
PID 4704 wrote to memory of 1832	4704	sdchange.exe	RegAsm.exe
PID 4704 wrote to memory of 1832	4704	sdchange.exe	RegAsm.exe
PID 4704 wrote to memory of 1832	4704	sdchange.exe	RegAsm.exe
PID 4704 wrote to memory of 1832	4704	sdchange.exe	RegAsm.exe
PID 4704 wrote to memory of 4944	4704	sdchange.exe	schtasks.exe
PID 4704 wrote to memory of 4944	4704	sdchange.exe	schtasks.exe
PID 4704 wrote to memory of 4944	4704	sdchange.exe	schtasks.exe

C:\Users\Admin\AppData\Local\Temp\cd348d8f8a74c9ceba525ccbf26a7e70_exe32.exe
"C:\Users\Admin\AppData\Local\Temp\cd348d8f8a74c9ceba525ccbf26a7e70_exe32.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4524
- 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:1152
- 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:2720

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:4816
- C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
  "C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe"
  2⤵
  PID:3356
- 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:1220

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:4704
- C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
  "C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe"
  2⤵
  PID:1832
- 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:4944

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
c5329c1cdd0454beb96bd38e6b90b2d6

SHA1
de04ce55c4151f6ca656c59de7cc63bd82aa05dc

SHA256
8fc2110bf4fc0ff1e9a52a14e04eff567c1b4af178d765f13d105e8b50c9415f

SHA512
c4407f64b4e4b466d9a9669369a0aec15ac2d5abb921c16124446aff2db43657d7a8324e590458788cbfbf1ba9cdff8220e679f01dc19cc86eacd071f00100b5

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

Filesize
1.1MB

MD5
c5329c1cdd0454beb96bd38e6b90b2d6

SHA1
de04ce55c4151f6ca656c59de7cc63bd82aa05dc

SHA256
8fc2110bf4fc0ff1e9a52a14e04eff567c1b4af178d765f13d105e8b50c9415f

SHA512
c4407f64b4e4b466d9a9669369a0aec15ac2d5abb921c16124446aff2db43657d7a8324e590458788cbfbf1ba9cdff8220e679f01dc19cc86eacd071f00100b5

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

Filesize
1.1MB

MD5
c5329c1cdd0454beb96bd38e6b90b2d6

SHA1
de04ce55c4151f6ca656c59de7cc63bd82aa05dc

SHA256
8fc2110bf4fc0ff1e9a52a14e04eff567c1b4af178d765f13d105e8b50c9415f

SHA512
c4407f64b4e4b466d9a9669369a0aec15ac2d5abb921c16124446aff2db43657d7a8324e590458788cbfbf1ba9cdff8220e679f01dc19cc86eacd071f00100b5

Download Submit
memory/1152-7-0x00000000027C0000-0x00000000027D0000-memory.dmp

Filesize
64KB

Download
memory/1152-1-0x0000000000400000-0x000000000040C000-memory.dmp

Filesize
48KB

Download
memory/1152-6-0x0000000073570000-0x0000000073B21000-memory.dmp

Filesize
5.7MB

Download
memory/1152-10-0x0000000073570000-0x0000000073B21000-memory.dmp

Filesize
5.7MB

Download
memory/1152-5-0x0000000073570000-0x0000000073B21000-memory.dmp

Filesize
5.7MB

Download
memory/1832-31-0x0000000073570000-0x0000000073B21000-memory.dmp

Filesize
5.7MB

Download
memory/1832-29-0x0000000073570000-0x0000000073B21000-memory.dmp

Filesize
5.7MB

Download
memory/1832-30-0x0000000002C70000-0x0000000002C80000-memory.dmp

Filesize
64KB

Download
memory/1832-28-0x0000000073570000-0x0000000073B21000-memory.dmp

Filesize
5.7MB

Download
memory/3356-17-0x0000000073570000-0x0000000073B21000-memory.dmp

Filesize
5.7MB

Download
memory/3356-21-0x0000000073570000-0x0000000073B21000-memory.dmp

Filesize
5.7MB

Download
memory/3356-19-0x0000000073570000-0x0000000073B21000-memory.dmp

Filesize
5.7MB

Download
memory/3356-18-0x0000000000E70000-0x0000000000E80000-memory.dmp

Filesize
64KB

Download
memory/4524-0-0x0000000000F40000-0x0000000000F41000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads