warmcookie | c4e9ccca525c21d719b3ee8547e84934942d1d18cd96374eb61c2e99cdd7f103

Analysis

max time kernel
147s
max time network
149s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
13/11/2024, 14:13

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General

Target

launcher.bat
Size

61B
MD5

71fc33d2c87facdfbb2499300fc2bedd
SHA1

40ab3ac01282ce3c4df44afc5e73c6d7a7502430
SHA256

2f36e33a436d6f565230ba1dafc9dea801599d47a9ff3fbb940a200f43d8b3ae
SHA512

588b393c79c7ca748f4b4cc8fbffd7d221956bfcf9e8c4b73a0fd6d84527ecad050c5a9312fb608fc1cf276fb0149777a8d551b64af0869680beb17ff0670f2d

Score

10^/10

warmcookie backdoor discovery

Malware Config

Extracted

Family

warmcookie

Attributes

mutex
65abfc80-a660-4691-a919-130dc9b75b98

Signatures

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

Blocklisted process makes network request 19 IoCs

flow	pid	Process
4	2688	rundll32.exe
5	2688	rundll32.exe
6	2688	rundll32.exe
7	2688	rundll32.exe
8	2688	rundll32.exe
9	2688	rundll32.exe
11	2688	rundll32.exe
12	2688	rundll32.exe
13	2688	rundll32.exe
14	2688	rundll32.exe
15	2688	rundll32.exe
16	2688	rundll32.exe
18	2688	rundll32.exe
19	2688	rundll32.exe
20	2688	rundll32.exe
21	2688	rundll32.exe
22	2688	rundll32.exe
23	2688	rundll32.exe
25	2688	rundll32.exe

Loads dropped DLL 4 IoCs

pid	Process
2688	rundll32.exe
2688	rundll32.exe
2688	rundll32.exe
2688	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 System32 directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\system32\config\systemprofile\AppData\Local\Microsoft\Windows\Temporary Internet Files\counters.dat	rundll32.exe

Drops file in Windows directory 1 IoCs

description	ioc	Process
File created	C:\Windows\Tasks\Specbee.job	rundll32.exe

Modifies data under HKEY_USERS 28 IoCs

description	ioc	Process
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f0075000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	rundll32.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{6EE75E36-EDD7-4622-AC3A-A75C702E6FC6}\WpadDecision = "0"	rundll32.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\72-3e-ec-53-c2-1a\WpadDecisionTime = 706c904ad635db01	rundll32.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad	rundll32.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{6EE75E36-EDD7-4622-AC3A-A75C702E6FC6}\WpadDecisionReason = "1"	rundll32.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings	rundll32.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ProxyEnable = "0"	rundll32.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{6EE75E36-EDD7-4622-AC3A-A75C702E6FC6}\72-3e-ec-53-c2-1a	rundll32.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\72-3e-ec-53-c2-1a\WpadDecisionReason = "1"	rundll32.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{6EE75E36-EDD7-4622-AC3A-A75C702E6FC6}\WpadDecisionTime = 704c7756d635db01	rundll32.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{6EE75E36-EDD7-4622-AC3A-A75C702E6FC6}	rundll32.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000005000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f0075000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	rundll32.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	rundll32.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{6EE75E36-EDD7-4622-AC3A-A75C702E6FC6}\WpadNetworkName = "Network 3"	rundll32.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\72-3e-ec-53-c2-1a\WpadDetectedUrl	rundll32.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\72-3e-ec-53-c2-1a\WpadDecision = "0"	rundll32.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{6EE75E36-EDD7-4622-AC3A-A75C702E6FC6}\WpadDecisionTime = f0dfe867d635db01	rundll32.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\72-3e-ec-53-c2-1a\WpadDecisionTime = f0dfe867d635db01	rundll32.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{6EE75E36-EDD7-4622-AC3A-A75C702E6FC6}\WpadDecisionTime = 706c904ad635db01	rundll32.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\72-3e-ec-53-c2-1a	rundll32.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000006000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f0075000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	rundll32.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{6EE75E36-EDD7-4622-AC3A-A75C702E6FC6}\WpadDecisionTime = b008f98cd635db01	rundll32.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\72-3e-ec-53-c2-1a\WpadDecisionTime = b008f98cd635db01	rundll32.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings	rundll32.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections	rundll32.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\SavedLegacySettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	rundll32.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000004000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f0075000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	rundll32.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\72-3e-ec-53-c2-1a\WpadDecisionTime = 704c7756d635db01	rundll32.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 2328 wrote to memory of 2912	2328	cmd.exe	32
PID 2328 wrote to memory of 2912	2328	cmd.exe	32
PID 2328 wrote to memory of 2912	2328	cmd.exe	32
PID 2636 wrote to memory of 2688	2636	taskeng.exe	34
PID 2636 wrote to memory of 2688	2636	taskeng.exe	34
PID 2636 wrote to memory of 2688	2636	taskeng.exe	34

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012

C:\Windows\system32\cmd.exe
cmd /c "C:\Users\Admin\AppData\Local\Temp\launcher.bat"
1⤵
- Suspicious use of WriteProcessMemory
PID:2328
- C:\Windows\system32\rundll32.exe
  rundll32.exe Updater.dll,Start
  2⤵
  - Drops file in Windows directory
  PID:2912

C:\Windows\system32\taskeng.exe
taskeng.exe {30D12A38-0874-45D3-99AD-2D5E534D90B7} S-1-5-18:NT AUTHORITY\System:Service:
1⤵
- Suspicious use of WriteProcessMemory
PID:2636
- C:\Windows\system32\rundll32.exe
  C:\Windows\system32\rundll32.exe "C:\ProgramData\Specbee\Updater.dll",Start /u
  2⤵
  - Blocklisted process makes network request
  - Loads dropped DLL
  - Drops file in System32 directory
  - Modifies data under HKEY_USERS
  PID:2688

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

C:\ProgramData\Specbee\Updater.dll

Filesize
129KB

MD5
e08edc1510052adc297d6af47022a70b

SHA1
f08af6d4a2f9655beb8219aca5711400efed8670

SHA256
915a80abb43f04fcdfb9ba2ced3b38f3524c050b6c0a36d97f4e7827916248b2

SHA512
2b91019e3d96b57362719b9bddb7b894239977266d23e2c8b9ebbcd93a9ba748491b96a92c1b4fd1876e74a3b7f3da99b89bb0e38a463a8ae9f357d9d9f66652

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