limerat | b31de3ea02144147649b6d3f04abf7b6186a5e783a63bb3b04a3552c153a397f

General

Target

8b3c21db4e4189d00b8da6db22ae7387_JaffaCakes118.exe
Size

66KB
MD5

8b3c21db4e4189d00b8da6db22ae7387
SHA1

6bd9edd982bb103c21b2a3072c16d0274d692f8e
SHA256

b31de3ea02144147649b6d3f04abf7b6186a5e783a63bb3b04a3552c153a397f
SHA512

1e551f14c66cdfd790c7cf8700e166dbfda95283b2247d200c02516ab676cebc0b6263250554436195efe2e8956be2d8406ebe82b7bee611fc238a9ff0fc86d2
SSDEEP

1536:J13Mt0qGK+wM0+nXdNPdwjgu3n3ipmC/k/qSAa0iUHXSjUXCOyZGqL:J13Mt7P+wM0+nXdtejgu3nypr/7RLXSZ

Score

10^/10

limerat discovery rat

Malware Config

Extracted

Family

limerat

Attributes

aes_key
IRj3SceatjDfweW/qMMw7g==
antivm
true
c2_url
https://pastebin.com/raw/p8Be8nNX
delay
3
download_payload
false
install
true
install_name
Windows Update.exe
main_folder
UserProfile
pin_spread
false
sub_folder
\Windows\
usb_spread
false

Extracted

Family

limerat

Attributes

antivm
false
c2_url
https://pastebin.com/raw/p8Be8nNX
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 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-1-5-21-656926755-4116854191-210765258-1000\Control Panel\International\Geo\Nation	8b3c21db4e4189d00b8da6db22ae7387_JaffaCakes118.exe

Executes dropped EXE 2 IoCs

pid	Process
4624	Windows Update.exe
4204	Windows Update.exe

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

Web Service

T1102

flow	ioc
25	pastebin.com
24	pastebin.com

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 2068 set thread context of 2084	2068	8b3c21db4e4189d00b8da6db22ae7387_JaffaCakes118.exe	85
PID 4624 set thread context of 4204	4624	Windows Update.exe	95

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

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 5 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	8b3c21db4e4189d00b8da6db22ae7387_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	8b3c21db4e4189d00b8da6db22ae7387_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Windows Update.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Windows Update.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

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

persistence execution

Scheduled Task

T1053.005

pid	Process
2028	schtasks.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4204	Windows Update.exe
Token: SeDebugPrivilege	4204	Windows Update.exe

Suspicious use of WriteProcessMemory 20 IoCs

description	pid	Process	procid_target
PID 2068 wrote to memory of 2084	2068	8b3c21db4e4189d00b8da6db22ae7387_JaffaCakes118.exe	85
PID 2068 wrote to memory of 2084	2068	8b3c21db4e4189d00b8da6db22ae7387_JaffaCakes118.exe	85
PID 2068 wrote to memory of 2084	2068	8b3c21db4e4189d00b8da6db22ae7387_JaffaCakes118.exe	85
PID 2068 wrote to memory of 2084	2068	8b3c21db4e4189d00b8da6db22ae7387_JaffaCakes118.exe	85
PID 2068 wrote to memory of 2084	2068	8b3c21db4e4189d00b8da6db22ae7387_JaffaCakes118.exe	85
PID 2068 wrote to memory of 2084	2068	8b3c21db4e4189d00b8da6db22ae7387_JaffaCakes118.exe	85
PID 2068 wrote to memory of 2084	2068	8b3c21db4e4189d00b8da6db22ae7387_JaffaCakes118.exe	85
PID 2084 wrote to memory of 2028	2084	8b3c21db4e4189d00b8da6db22ae7387_JaffaCakes118.exe	92
PID 2084 wrote to memory of 2028	2084	8b3c21db4e4189d00b8da6db22ae7387_JaffaCakes118.exe	92
PID 2084 wrote to memory of 2028	2084	8b3c21db4e4189d00b8da6db22ae7387_JaffaCakes118.exe	92
PID 2084 wrote to memory of 4624	2084	8b3c21db4e4189d00b8da6db22ae7387_JaffaCakes118.exe	94
PID 2084 wrote to memory of 4624	2084	8b3c21db4e4189d00b8da6db22ae7387_JaffaCakes118.exe	94
PID 2084 wrote to memory of 4624	2084	8b3c21db4e4189d00b8da6db22ae7387_JaffaCakes118.exe	94
PID 4624 wrote to memory of 4204	4624	Windows Update.exe	95
PID 4624 wrote to memory of 4204	4624	Windows Update.exe	95
PID 4624 wrote to memory of 4204	4624	Windows Update.exe	95
PID 4624 wrote to memory of 4204	4624	Windows Update.exe	95
PID 4624 wrote to memory of 4204	4624	Windows Update.exe	95
PID 4624 wrote to memory of 4204	4624	Windows Update.exe	95
PID 4624 wrote to memory of 4204	4624	Windows Update.exe	95

C:\Users\Admin\AppData\Local\Temp\8b3c21db4e4189d00b8da6db22ae7387_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\8b3c21db4e4189d00b8da6db22ae7387_JaffaCakes118.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2068
- C:\Users\Admin\AppData\Local\Temp\8b3c21db4e4189d00b8da6db22ae7387_JaffaCakes118.exe
  "C:\Users\Admin\AppData\Local\Temp\8b3c21db4e4189d00b8da6db22ae7387_JaffaCakes118.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2084
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /f /sc ONLOGON /RL HIGHEST /tn LimeRAT-Admin /tr "'C:\Users\Admin\Windows\Windows Update.exe'"
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:2028
- - C:\Users\Admin\Windows\Windows Update.exe
    "C:\Users\Admin\Windows\Windows Update.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:4624
  - - C:\Users\Admin\Windows\Windows Update.exe
      "C:\Users\Admin\Windows\Windows Update.exe"
      4⤵
      Executes dropped EXE
      System Location Discovery: System Language Discovery
      Suspicious use of AdjustPrivilegeToken
      PID:4204

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Persistence

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Privilege Escalation

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

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\8b3c21db4e4189d00b8da6db22ae7387_JaffaCakes118.exe.log

Filesize
226B

MD5
916851e072fbabc4796d8916c5131092

SHA1
d48a602229a690c512d5fdaf4c8d77547a88e7a2

SHA256
7e750c904c43d27c89e55af809a679a96c0bb63fc511006ffbceffc2c7f6fb7d

SHA512
07ce4c881d6c411cac0b62364377e77950797c486804fb10d00555458716e3c47b1efc0d1f37e4cc3b7e6565bb402ca01c7ea8c963f9f9ace941a6e3883d2521

Download Submit
C:\Users\Admin\Windows\Windows Update.exe

Filesize
66KB

MD5
8b3c21db4e4189d00b8da6db22ae7387

SHA1
6bd9edd982bb103c21b2a3072c16d0274d692f8e

SHA256
b31de3ea02144147649b6d3f04abf7b6186a5e783a63bb3b04a3552c153a397f

SHA512
1e551f14c66cdfd790c7cf8700e166dbfda95283b2247d200c02516ab676cebc0b6263250554436195efe2e8956be2d8406ebe82b7bee611fc238a9ff0fc86d2

Download Submit
memory/2068-1-0x0000000000F00000-0x0000000000F16000-memory.dmp

Filesize
88KB

Download
memory/2068-2-0x00000000744D0000-0x0000000074C80000-memory.dmp

Filesize
7.7MB

Download
memory/2068-3-0x0000000001910000-0x0000000001918000-memory.dmp

Filesize
32KB

Download
memory/2068-0-0x00000000744DE000-0x00000000744DF000-memory.dmp

Filesize
4KB

Download
memory/2068-7-0x00000000744D0000-0x0000000074C80000-memory.dmp

Filesize
7.7MB

Download
memory/2084-4-0x0000000000400000-0x000000000040C000-memory.dmp

Filesize
48KB

Download
memory/2084-9-0x0000000004C70000-0x0000000004D0C000-memory.dmp

Filesize
624KB

Download
memory/2084-10-0x0000000004D10000-0x0000000004D76000-memory.dmp

Filesize
408KB

Download
memory/2084-11-0x00000000744D0000-0x0000000074C80000-memory.dmp

Filesize
7.7MB

Download
memory/2084-12-0x0000000005A80000-0x0000000006024000-memory.dmp

Filesize
5.6MB

Download
memory/2084-8-0x00000000744D0000-0x0000000074C80000-memory.dmp

Filesize
7.7MB

Download
memory/2084-24-0x00000000744D0000-0x0000000074C80000-memory.dmp

Filesize
7.7MB

Download
memory/4624-25-0x00000000744D0000-0x0000000074C80000-memory.dmp

Filesize
7.7MB

Download
memory/4624-30-0x00000000744D0000-0x0000000074C80000-memory.dmp

Filesize
7.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads