warmcookie | ccde1ded028948f5cd3277d2d4af6b22fa33f53abde84ea2aa01f1872fad1d13

Analysis

max time kernel
121s
max time network
121s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
28/10/2024, 17:21

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General

Target

ccde1ded028948f5cd3277d2d4af6b22fa33f53abde84ea2aa01f1872fad1d13.dll
Size

141KB
MD5

1b7b6fb1a99996587a3c20ee9c390a9c
SHA1

129aa22329dd45f7bce5172e97cbd8016dec830e
SHA256

ccde1ded028948f5cd3277d2d4af6b22fa33f53abde84ea2aa01f1872fad1d13
SHA512

a3b62e1c1184c01b0175b09f0a62003e120e652245ea80cebf9e55c89ef71308c4400bfe13281a60ae993c58d7dad5522688fa2e8924343e1baa5c25bfce44eb
SSDEEP

3072:HACxLpcTIhjZM3VhHSkYl8CagwurZvE9vV1ZQZR:HTtpcPlJSTl4PuF

Score

10^/10

warmcookie backdoor discovery

Malware Config

Extracted

Family

warmcookie

185.49.69.41

Attributes

mutex
08f09347-2b1b-491e-84f5-2768e33a0c04
user_agent
Mozilla / 4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1;.NET CLR 1.0.3705)

Signatures

Warmcookie family
warmcookie
Warmcookie, Badspace
Warmcookie aka Badspace is a backdoor written in C++.
backdoor warmcookie

Loads dropped DLL 4 IoCs

pid	Process
1952	rundll32.exe
1952	rundll32.exe
1952	rundll32.exe
1952	rundll32.exe

Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012

Drops file in Windows directory 1 IoCs

description	ioc	Process
File created	C:\Windows\Tasks\RtlUpd.job	regsvr32.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2844 wrote to memory of 1952	2844	taskeng.exe	32
PID 2844 wrote to memory of 1952	2844	taskeng.exe	32
PID 2844 wrote to memory of 1952	2844	taskeng.exe	32

C:\Windows\system32\regsvr32.exe
regsvr32 /s C:\Users\Admin\AppData\Local\Temp\ccde1ded028948f5cd3277d2d4af6b22fa33f53abde84ea2aa01f1872fad1d13.dll
1⤵
- Drops file in Windows directory
PID:2648

C:\Windows\system32\taskeng.exe
taskeng.exe {CFAA7F3E-85F0-419C-B6C2-A55ABDCC1069} S-1-5-18:NT AUTHORITY\System:Service:
1⤵
- Suspicious use of WriteProcessMemory
PID:2844
- C:\Windows\system32\rundll32.exe
  C:\Windows\system32\rundll32.exe "C:\ProgramData\RtlUpd\RtlUpd.dll",Start /p
  2⤵
  - Loads dropped DLL
  PID:1952

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

\ProgramData\RtlUpd\RtlUpd.dll

Filesize
141KB

MD5
1b7b6fb1a99996587a3c20ee9c390a9c

SHA1
129aa22329dd45f7bce5172e97cbd8016dec830e

SHA256
ccde1ded028948f5cd3277d2d4af6b22fa33f53abde84ea2aa01f1872fad1d13

SHA512
a3b62e1c1184c01b0175b09f0a62003e120e652245ea80cebf9e55c89ef71308c4400bfe13281a60ae993c58d7dad5522688fa2e8924343e1baa5c25bfce44eb

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