limerat | 39cf80b8b2f6267107baf94a021f6a59379d225b9ce839b367812eae8d3c8cfe

General

Target

39cf80b8b2f6267107baf94a021f6a59379d225b9ce839b367812eae8d3c8cfe.exe
Size

489KB
MD5

6b6219d4bdbe2afc7761374809bb6878
SHA1

d38dbfdd5e427de71b0879a02ba5f0fe2c2daf67
SHA256

39cf80b8b2f6267107baf94a021f6a59379d225b9ce839b367812eae8d3c8cfe
SHA512

559c8a80cd12da4756480337397ae0bdbdd4085ff76dbeb7ba0873c257bd973073d3faabb02c18766fe77b3a551f5ee3fe3e5341e7ea619a70292315ad3f3d8d
SSDEEP

3072:yuk730Xshh+ED085419v6fECJ7Y8XWIMij70ozw+sJF3XY0PA:yT730jEYIK6fpJ7Y8HMK5K

Score

10^/10

limerat rat

Malware Config

Extracted

Family

limerat

Attributes

aes_key
IRj3SceatjDfweW/qMMw7g==
antivm
true
c2_url
https://pastebin.com/raw/Jpq3By4t
delay
3
download_payload
false
install
true
install_name
Audio Realtek Driver.exe
main_folder
AppData
pin_spread
false
sub_folder
\Audio Realtek Driver\
usb_spread
false

Signatures

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

Executes dropped EXE 2 IoCs

pid	Process
4440	Audio Realtek Driver.exe
3392	Audio Realtek Driver.exe

Checks computer location settings 2 TTPs 1 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-1-5-21-2971393436-602173351-1645505021-1000\Control Panel\International\Geo\Nation	39cf80b8b2f6267107baf94a021f6a59379d225b9ce839b367812eae8d3c8cfe.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs

Web Service
T1102

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 1348 set thread context of 1172	1348	39cf80b8b2f6267107baf94a021f6a59379d225b9ce839b367812eae8d3c8cfe.exe	79
PID 4440 set thread context of 3392	4440	Audio Realtek Driver.exe	87

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 1 IoCs

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

persistence

Scheduled Task

T1053

pid	Process
3732	schtasks.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3392	Audio Realtek Driver.exe
Token: SeDebugPrivilege	3392	Audio Realtek Driver.exe

Suspicious use of WriteProcessMemory 20 IoCs

description	pid	Process	procid_target
PID 1348 wrote to memory of 1172	1348	39cf80b8b2f6267107baf94a021f6a59379d225b9ce839b367812eae8d3c8cfe.exe	79
PID 1348 wrote to memory of 1172	1348	39cf80b8b2f6267107baf94a021f6a59379d225b9ce839b367812eae8d3c8cfe.exe	79
PID 1348 wrote to memory of 1172	1348	39cf80b8b2f6267107baf94a021f6a59379d225b9ce839b367812eae8d3c8cfe.exe	79
PID 1348 wrote to memory of 1172	1348	39cf80b8b2f6267107baf94a021f6a59379d225b9ce839b367812eae8d3c8cfe.exe	79
PID 1348 wrote to memory of 1172	1348	39cf80b8b2f6267107baf94a021f6a59379d225b9ce839b367812eae8d3c8cfe.exe	79
PID 1348 wrote to memory of 1172	1348	39cf80b8b2f6267107baf94a021f6a59379d225b9ce839b367812eae8d3c8cfe.exe	79
PID 1348 wrote to memory of 1172	1348	39cf80b8b2f6267107baf94a021f6a59379d225b9ce839b367812eae8d3c8cfe.exe	79
PID 1172 wrote to memory of 3732	1172	39cf80b8b2f6267107baf94a021f6a59379d225b9ce839b367812eae8d3c8cfe.exe	83
PID 1172 wrote to memory of 3732	1172	39cf80b8b2f6267107baf94a021f6a59379d225b9ce839b367812eae8d3c8cfe.exe	83
PID 1172 wrote to memory of 3732	1172	39cf80b8b2f6267107baf94a021f6a59379d225b9ce839b367812eae8d3c8cfe.exe	83
PID 1172 wrote to memory of 4440	1172	39cf80b8b2f6267107baf94a021f6a59379d225b9ce839b367812eae8d3c8cfe.exe	86
PID 1172 wrote to memory of 4440	1172	39cf80b8b2f6267107baf94a021f6a59379d225b9ce839b367812eae8d3c8cfe.exe	86
PID 1172 wrote to memory of 4440	1172	39cf80b8b2f6267107baf94a021f6a59379d225b9ce839b367812eae8d3c8cfe.exe	86
PID 4440 wrote to memory of 3392	4440	Audio Realtek Driver.exe	87
PID 4440 wrote to memory of 3392	4440	Audio Realtek Driver.exe	87
PID 4440 wrote to memory of 3392	4440	Audio Realtek Driver.exe	87
PID 4440 wrote to memory of 3392	4440	Audio Realtek Driver.exe	87
PID 4440 wrote to memory of 3392	4440	Audio Realtek Driver.exe	87
PID 4440 wrote to memory of 3392	4440	Audio Realtek Driver.exe	87
PID 4440 wrote to memory of 3392	4440	Audio Realtek Driver.exe	87

C:\Users\Admin\AppData\Local\Temp\39cf80b8b2f6267107baf94a021f6a59379d225b9ce839b367812eae8d3c8cfe.exe
"C:\Users\Admin\AppData\Local\Temp\39cf80b8b2f6267107baf94a021f6a59379d225b9ce839b367812eae8d3c8cfe.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1348
- C:\Users\Admin\AppData\Local\Temp\39cf80b8b2f6267107baf94a021f6a59379d225b9ce839b367812eae8d3c8cfe.exe
  "C:\Users\Admin\AppData\Local\Temp\39cf80b8b2f6267107baf94a021f6a59379d225b9ce839b367812eae8d3c8cfe.exe"
  2⤵
  - Checks computer location settings
  - Suspicious use of WriteProcessMemory
  PID:1172
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /f /sc ONLOGON /RL HIGHEST /tn LimeRAT-Admin /tr "'C:\Users\Admin\AppData\Roaming\Audio Realtek Driver\Audio Realtek Driver.exe'"
    3⤵
    - Creates scheduled task(s)
    PID:3732
- - C:\Users\Admin\AppData\Roaming\Audio Realtek Driver\Audio Realtek Driver.exe
    "C:\Users\Admin\AppData\Roaming\Audio Realtek Driver\Audio Realtek Driver.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:4440
  - - C:\Users\Admin\AppData\Roaming\Audio Realtek Driver\Audio Realtek Driver.exe
      "C:\Users\Admin\AppData\Roaming\Audio Realtek Driver\Audio Realtek Driver.exe"
      4⤵
      Executes dropped EXE
      Suspicious use of AdjustPrivilegeToken
      PID:3392

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

1

T1053

Persistence

Scheduled Task

1

T1053

Privilege Escalation

Scheduled Task

1

T1053

Defense Evasion

Web Service

1

T1102

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

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_v4.0_32\UsageLogs\39cf80b8b2f6267107baf94a021f6a59379d225b9ce839b367812eae8d3c8cfe.exe.log

Filesize
226B

MD5
916851e072fbabc4796d8916c5131092

SHA1
d48a602229a690c512d5fdaf4c8d77547a88e7a2

SHA256
7e750c904c43d27c89e55af809a679a96c0bb63fc511006ffbceffc2c7f6fb7d

SHA512
07ce4c881d6c411cac0b62364377e77950797c486804fb10d00555458716e3c47b1efc0d1f37e4cc3b7e6565bb402ca01c7ea8c963f9f9ace941a6e3883d2521

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\Audio Realtek Driver.exe.log

Filesize
226B

MD5
916851e072fbabc4796d8916c5131092

SHA1
d48a602229a690c512d5fdaf4c8d77547a88e7a2

SHA256
7e750c904c43d27c89e55af809a679a96c0bb63fc511006ffbceffc2c7f6fb7d

SHA512
07ce4c881d6c411cac0b62364377e77950797c486804fb10d00555458716e3c47b1efc0d1f37e4cc3b7e6565bb402ca01c7ea8c963f9f9ace941a6e3883d2521

Download Submit
C:\Users\Admin\AppData\Roaming\Audio Realtek Driver\Audio Realtek Driver.exe

Filesize
489KB

MD5
6b6219d4bdbe2afc7761374809bb6878

SHA1
d38dbfdd5e427de71b0879a02ba5f0fe2c2daf67

SHA256
39cf80b8b2f6267107baf94a021f6a59379d225b9ce839b367812eae8d3c8cfe

SHA512
559c8a80cd12da4756480337397ae0bdbdd4085ff76dbeb7ba0873c257bd973073d3faabb02c18766fe77b3a551f5ee3fe3e5341e7ea619a70292315ad3f3d8d

Download Submit
C:\Users\Admin\AppData\Roaming\Audio Realtek Driver\Audio Realtek Driver.exe

Filesize
489KB

MD5
6b6219d4bdbe2afc7761374809bb6878

SHA1
d38dbfdd5e427de71b0879a02ba5f0fe2c2daf67

SHA256
39cf80b8b2f6267107baf94a021f6a59379d225b9ce839b367812eae8d3c8cfe

SHA512
559c8a80cd12da4756480337397ae0bdbdd4085ff76dbeb7ba0873c257bd973073d3faabb02c18766fe77b3a551f5ee3fe3e5341e7ea619a70292315ad3f3d8d

Download Submit
C:\Users\Admin\AppData\Roaming\Audio Realtek Driver\Audio Realtek Driver.exe

Filesize
489KB

MD5
6b6219d4bdbe2afc7761374809bb6878

SHA1
d38dbfdd5e427de71b0879a02ba5f0fe2c2daf67

SHA256
39cf80b8b2f6267107baf94a021f6a59379d225b9ce839b367812eae8d3c8cfe

SHA512
559c8a80cd12da4756480337397ae0bdbdd4085ff76dbeb7ba0873c257bd973073d3faabb02c18766fe77b3a551f5ee3fe3e5341e7ea619a70292315ad3f3d8d

Download Submit
memory/1172-134-0x0000000000400000-0x000000000040C000-memory.dmp

Filesize
48KB

Download
memory/1172-136-0x0000000005740000-0x00000000057DC000-memory.dmp

Filesize
624KB

Download
memory/1172-137-0x00000000057E0000-0x0000000005846000-memory.dmp

Filesize
408KB

Download
memory/1172-138-0x0000000006300000-0x00000000068A4000-memory.dmp

Filesize
5.6MB

Download
memory/1348-132-0x0000000000BD0000-0x0000000000C50000-memory.dmp

Filesize
512KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads