limerat | 0ab7b0b931490bf95e8dd6ec8e9f3d014b5c93b2ba3b3a32445f481f2db2bdb6

Analysis

max time kernel
202s
max time network
220s
platform
windows7_x64
resource
win7-20220414-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
632	sdchange.exe
1744	sdchange.exe
368	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
behavioral1/files/0x000a0000000122e8-67.dat	autoit_exe
behavioral1/files/0x000a0000000122e8-69.dat	autoit_exe
behavioral1/files/0x000a0000000122e8-82.dat	autoit_exe
behavioral1/files/0x000a0000000122e8-97.dat	autoit_exe

Suspicious use of SetThreadContext 4 IoCs

description	pid	Process	procid_target
PID 1044 set thread context of 2040	1044	0ab7b0b931490bf95e8dd6ec8e9f3d014b5c93b2ba3b3a32445f481f2db2bdb6.exe	28
PID 632 set thread context of 1832	632	sdchange.exe	34
PID 1744 set thread context of 1608	1744	sdchange.exe	38
PID 368 set thread context of 1740	368	sdchange.exe	42

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
2020	schtasks.exe
1828	schtasks.exe
1996	schtasks.exe
1616	schtasks.exe

Modifies system certificate store 2 TTPs 2 IoCs

evasion spyware trojan

Install Root Certificate

T1130

Modify Registry

T1112

description	ioc	Process
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\D4DE20D05E66FC53FE1A50882C78DB2852CAE474\Blob = 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	RegAsm.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\D4DE20D05E66FC53FE1A50882C78DB2852CAE474	RegAsm.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2040	RegAsm.exe
Token: SeDebugPrivilege	2040	RegAsm.exe

Suspicious use of WriteProcessMemory 64 IoCs

description	pid	Process	procid_target
PID 1044 wrote to memory of 2040	1044	0ab7b0b931490bf95e8dd6ec8e9f3d014b5c93b2ba3b3a32445f481f2db2bdb6.exe	28
PID 1044 wrote to memory of 2040	1044	0ab7b0b931490bf95e8dd6ec8e9f3d014b5c93b2ba3b3a32445f481f2db2bdb6.exe	28
PID 1044 wrote to memory of 2040	1044	0ab7b0b931490bf95e8dd6ec8e9f3d014b5c93b2ba3b3a32445f481f2db2bdb6.exe	28
PID 1044 wrote to memory of 2040	1044	0ab7b0b931490bf95e8dd6ec8e9f3d014b5c93b2ba3b3a32445f481f2db2bdb6.exe	28
PID 1044 wrote to memory of 2040	1044	0ab7b0b931490bf95e8dd6ec8e9f3d014b5c93b2ba3b3a32445f481f2db2bdb6.exe	28
PID 1044 wrote to memory of 2040	1044	0ab7b0b931490bf95e8dd6ec8e9f3d014b5c93b2ba3b3a32445f481f2db2bdb6.exe	28
PID 1044 wrote to memory of 2040	1044	0ab7b0b931490bf95e8dd6ec8e9f3d014b5c93b2ba3b3a32445f481f2db2bdb6.exe	28
PID 1044 wrote to memory of 2040	1044	0ab7b0b931490bf95e8dd6ec8e9f3d014b5c93b2ba3b3a32445f481f2db2bdb6.exe	28
PID 1044 wrote to memory of 2040	1044	0ab7b0b931490bf95e8dd6ec8e9f3d014b5c93b2ba3b3a32445f481f2db2bdb6.exe	28
PID 1044 wrote to memory of 2020	1044	0ab7b0b931490bf95e8dd6ec8e9f3d014b5c93b2ba3b3a32445f481f2db2bdb6.exe	29
PID 1044 wrote to memory of 2020	1044	0ab7b0b931490bf95e8dd6ec8e9f3d014b5c93b2ba3b3a32445f481f2db2bdb6.exe	29
PID 1044 wrote to memory of 2020	1044	0ab7b0b931490bf95e8dd6ec8e9f3d014b5c93b2ba3b3a32445f481f2db2bdb6.exe	29
PID 1044 wrote to memory of 2020	1044	0ab7b0b931490bf95e8dd6ec8e9f3d014b5c93b2ba3b3a32445f481f2db2bdb6.exe	29
PID 760 wrote to memory of 632	760	taskeng.exe	33
PID 760 wrote to memory of 632	760	taskeng.exe	33
PID 760 wrote to memory of 632	760	taskeng.exe	33
PID 760 wrote to memory of 632	760	taskeng.exe	33
PID 632 wrote to memory of 1832	632	sdchange.exe	34
PID 632 wrote to memory of 1832	632	sdchange.exe	34
PID 632 wrote to memory of 1832	632	sdchange.exe	34
PID 632 wrote to memory of 1832	632	sdchange.exe	34
PID 632 wrote to memory of 1832	632	sdchange.exe	34
PID 632 wrote to memory of 1832	632	sdchange.exe	34
PID 632 wrote to memory of 1832	632	sdchange.exe	34
PID 632 wrote to memory of 1832	632	sdchange.exe	34
PID 632 wrote to memory of 1832	632	sdchange.exe	34
PID 632 wrote to memory of 1828	632	sdchange.exe	35
PID 632 wrote to memory of 1828	632	sdchange.exe	35
PID 632 wrote to memory of 1828	632	sdchange.exe	35
PID 632 wrote to memory of 1828	632	sdchange.exe	35
PID 760 wrote to memory of 1744	760	taskeng.exe	37
PID 760 wrote to memory of 1744	760	taskeng.exe	37
PID 760 wrote to memory of 1744	760	taskeng.exe	37
PID 760 wrote to memory of 1744	760	taskeng.exe	37
PID 1744 wrote to memory of 1608	1744	sdchange.exe	38
PID 1744 wrote to memory of 1608	1744	sdchange.exe	38
PID 1744 wrote to memory of 1608	1744	sdchange.exe	38
PID 1744 wrote to memory of 1608	1744	sdchange.exe	38
PID 1744 wrote to memory of 1608	1744	sdchange.exe	38
PID 1744 wrote to memory of 1608	1744	sdchange.exe	38
PID 1744 wrote to memory of 1608	1744	sdchange.exe	38
PID 1744 wrote to memory of 1608	1744	sdchange.exe	38
PID 1744 wrote to memory of 1608	1744	sdchange.exe	38
PID 1744 wrote to memory of 1996	1744	sdchange.exe	39
PID 1744 wrote to memory of 1996	1744	sdchange.exe	39
PID 1744 wrote to memory of 1996	1744	sdchange.exe	39
PID 1744 wrote to memory of 1996	1744	sdchange.exe	39
PID 760 wrote to memory of 368	760	taskeng.exe	41
PID 760 wrote to memory of 368	760	taskeng.exe	41
PID 760 wrote to memory of 368	760	taskeng.exe	41
PID 760 wrote to memory of 368	760	taskeng.exe	41
PID 368 wrote to memory of 1740	368	sdchange.exe	42
PID 368 wrote to memory of 1740	368	sdchange.exe	42
PID 368 wrote to memory of 1740	368	sdchange.exe	42
PID 368 wrote to memory of 1740	368	sdchange.exe	42
PID 368 wrote to memory of 1740	368	sdchange.exe	42
PID 368 wrote to memory of 1740	368	sdchange.exe	42
PID 368 wrote to memory of 1740	368	sdchange.exe	42
PID 368 wrote to memory of 1740	368	sdchange.exe	42
PID 368 wrote to memory of 1740	368	sdchange.exe	42
PID 368 wrote to memory of 1616	368	sdchange.exe	43
PID 368 wrote to memory of 1616	368	sdchange.exe	43
PID 368 wrote to memory of 1616	368	sdchange.exe	43
PID 368 wrote to memory of 1616	368	sdchange.exe	43

C:\Users\Admin\AppData\Local\Temp\0ab7b0b931490bf95e8dd6ec8e9f3d014b5c93b2ba3b3a32445f481f2db2bdb6.exe
"C:\Users\Admin\AppData\Local\Temp\0ab7b0b931490bf95e8dd6ec8e9f3d014b5c93b2ba3b3a32445f481f2db2bdb6.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1044
- 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
  - Modifies system certificate store
  - Suspicious use of AdjustPrivilegeToken
  PID:2040
- 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:2020

C:\Windows\system32\taskeng.exe
taskeng.exe {D0C6FE91-A744-4ACD-BF7E-E0AEB7D398F5} S-1-5-21-2277218442-1199762539-2004043321-1000:AUVQQRRF\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:760
- C:\Users\Admin\secinit\sdchange.exe
  C:\Users\Admin\secinit\sdchange.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - Suspicious use of WriteProcessMemory
  PID:632
- - C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
    "C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe"
    3⤵
    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
    3⤵
    - Creates scheduled task(s)
    PID:1828
- C:\Users\Admin\secinit\sdchange.exe
  C:\Users\Admin\secinit\sdchange.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - Suspicious use of WriteProcessMemory
  PID:1744
- - C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
    "C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe"
    3⤵
    PID:1608
- - 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
    3⤵
    - Creates scheduled task(s)
    PID:1996
- C:\Users\Admin\secinit\sdchange.exe
  C:\Users\Admin\secinit\sdchange.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - Suspicious use of WriteProcessMemory
  PID:368
- - C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
    "C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe"
    3⤵
    PID:1740
- - 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
    3⤵
    - Creates scheduled task(s)
    PID:1616

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

T1053

Persistence

Scheduled Task

T1053

Privilege Escalation

Scheduled Task

T1053

Defense Evasion

Install Root Certificate

T1130

Modify Registry

T1112

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

sdchange.exe

Path C:\Users\Admin\secinit\sdchange.exe
Size 1.1MB
SHA256 350a0a98edaacd85d052868905589449fcf4d9ee306122464c1222ce2f007f82
MD5 c43beea143d889605390399c60543de1
SHA1 9e9216589f43515700b5f375f07d82c24aa1fd98
SHA512 9f3e8f258507abefbbc9e5a7e8144273484648ec071c882ad97ab3b097a342a4ea227376e402ab650bcbca58d190a5edc21fa09b30e9936ebd851c93bc794fc0
SSDEEP 24576:4AHnh+eWsN3skA4RV1Hom2KXMmHa97aWtjzjFtuM259:/h+ZkldoPK8Ya971XjFtA9
MD5 SHA1 SHA512 SSDEEP

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sdchange.exe

Path C:\Users\Admin\secinit\sdchange.exe
Size 1.1MB
SHA256 350a0a98edaacd85d052868905589449fcf4d9ee306122464c1222ce2f007f82
MD5 c43beea143d889605390399c60543de1
SHA1 9e9216589f43515700b5f375f07d82c24aa1fd98
SHA512 9f3e8f258507abefbbc9e5a7e8144273484648ec071c882ad97ab3b097a342a4ea227376e402ab650bcbca58d190a5edc21fa09b30e9936ebd851c93bc794fc0
SSDEEP 24576:4AHnh+eWsN3skA4RV1Hom2KXMmHa97aWtjzjFtuM259:/h+ZkldoPK8Ya971XjFtA9
MD5 SHA1 SHA512 SSDEEP

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sdchange.exe

Path C:\Users\Admin\secinit\sdchange.exe
Size 1.1MB
SHA256 350a0a98edaacd85d052868905589449fcf4d9ee306122464c1222ce2f007f82
MD5 c43beea143d889605390399c60543de1
SHA1 9e9216589f43515700b5f375f07d82c24aa1fd98
SHA512 9f3e8f258507abefbbc9e5a7e8144273484648ec071c882ad97ab3b097a342a4ea227376e402ab650bcbca58d190a5edc21fa09b30e9936ebd851c93bc794fc0
SSDEEP 24576:4AHnh+eWsN3skA4RV1Hom2KXMmHa97aWtjzjFtuM259:/h+ZkldoPK8Ya971XjFtA9
MD5 SHA1 SHA512 SSDEEP

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sdchange.exe

Path C:\Users\Admin\secinit\sdchange.exe
Size 1.1MB
SHA256 350a0a98edaacd85d052868905589449fcf4d9ee306122464c1222ce2f007f82
MD5 c43beea143d889605390399c60543de1
SHA1 9e9216589f43515700b5f375f07d82c24aa1fd98
SHA512 9f3e8f258507abefbbc9e5a7e8144273484648ec071c882ad97ab3b097a342a4ea227376e402ab650bcbca58d190a5edc21fa09b30e9936ebd851c93bc794fc0
SSDEEP 24576:4AHnh+eWsN3skA4RV1Hom2KXMmHa97aWtjzjFtuM259:/h+ZkldoPK8Ya971XjFtA9
MD5 SHA1 SHA512 SSDEEP

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memory/1044-54-0x0000000075C51000-0x0000000075C53000-memory.dmp

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memory/1608-95-0x00000000747E0000-0x0000000074D8B000-memory.dmp

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memory/1608-92-0x0000000000090000-0x000000000009C000-memory.dmp

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memory/1608-91-0x0000000000090000-0x000000000009C000-memory.dmp

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memory/1608-86-0x0000000000090000-0x000000000009C000-memory.dmp

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memory/1740-110-0x00000000747E0000-0x0000000074D8B000-memory.dmp

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memory/2040-66-0x00000000747E0000-0x0000000074D8B000-memory.dmp

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memory/2040-63-0x0000000000400000-0x000000000040C000-memory.dmp

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memory/2040-62-0x0000000000400000-0x000000000040C000-memory.dmp

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memory/2040-55-0x0000000000400000-0x000000000040C000-memory.dmp

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memory/2040-57-0x0000000000400000-0x000000000040C000-memory.dmp

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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