04afb038f98211a2ec8e013eaa4b30d45e55b9d82570b42ec6ca9e19c3ff707f

Analysis

max time kernel
150s
max time network
122s
platform
windows7_x64
resource
win7-20230712-en
resource tags

arch:x64arch:x86image:win7-20230712-enlocale:en-usos:windows7-x64system
submitted
08-08-2023 11:49

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General

Target

cobalt_http3.pcap
Size

10.1MB
MD5

a7954c88b5c87acbdd9c4e3ac9e48de4
SHA1

6e57d52016c522b74f743f16ba5f56a45d153a4a
SHA256

04afb038f98211a2ec8e013eaa4b30d45e55b9d82570b42ec6ca9e19c3ff707f
SHA512

f50f9cbea556d22f86b73f701e64d5cfae0442ee8788c0e47e5e618e6277976f621da62b43d7ae2f21f1ab9057d0894fc17d7b8edc8aa6c58a51b990a82433bd
SSDEEP

196608:Ap3pMHb2SxU5DQ51OG0ItWoCQRDvtJ9dZUfaLNOtd+tvQJp5l1iscosHhNy:e5M727oI6CstJLZUfLqc5lEPosHr

Score

3^/10

Malware Config

Signatures

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

System Information Discovery
T1082

Modifies registry class 9 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-4219371764-2579186923-3390623117-1000_CLASSES\.pcap	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4219371764-2579186923-3390623117-1000_CLASSES\pcap_auto_file\shell\Read\command\ = "\"C:\\Program Files (x86)\\Adobe\\Reader 9.0\\Reader\\AcroRd32.exe\" \"%1\""	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-4219371764-2579186923-3390623117-1000_CLASSES\pcap_auto_file\shell\Read\command	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-4219371764-2579186923-3390623117-1000_Classes\Local Settings	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-4219371764-2579186923-3390623117-1000_CLASSES\pcap_auto_file	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4219371764-2579186923-3390623117-1000_CLASSES\pcap_auto_file\	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4219371764-2579186923-3390623117-1000_CLASSES\.pcap\ = "pcap_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-4219371764-2579186923-3390623117-1000_CLASSES\pcap_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-4219371764-2579186923-3390623117-1000_CLASSES\pcap_auto_file\shell	rundll32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2880	AcroRd32.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
2880	AcroRd32.exe
2880	AcroRd32.exe
2880	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2080 wrote to memory of 2752	2080	cmd.exe	29
PID 2080 wrote to memory of 2752	2080	cmd.exe	29
PID 2080 wrote to memory of 2752	2080	cmd.exe	29
PID 2752 wrote to memory of 2880	2752	rundll32.exe	30
PID 2752 wrote to memory of 2880	2752	rundll32.exe	30
PID 2752 wrote to memory of 2880	2752	rundll32.exe	30
PID 2752 wrote to memory of 2880	2752	rundll32.exe	30

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\cobalt_http3.pcap
1⤵
- Suspicious use of WriteProcessMemory
PID:2080
- C:\Windows\system32\rundll32.exe
  "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\cobalt_http3.pcap
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:2752
- - C:\Program Files (x86)\Adobe\Reader 9.0\Reader\AcroRd32.exe
    "C:\Program Files (x86)\Adobe\Reader 9.0\Reader\AcroRd32.exe" "C:\Users\Admin\AppData\Local\Temp\cobalt_http3.pcap"
    3⤵
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of SetWindowsHookEx
    PID:2880

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Roaming\Adobe\Acrobat\9.0\SharedDataEvents

Filesize
3KB

MD5
1b7fc406c3abbf360ead03493f04d296

SHA1
71e41d109680b9329f6af15cfeccf0aa78d36ffd

SHA256
027579ee4f645287acf08813b93ffcb21137959788c6bd580778786d05a73d05

SHA512
a4d9dc79323c87b29b87dcf3bc9aa8f9d5b8ad9a7d4f6a20b5c129d421af4c51bd327868d0949cea51aea954ca28090e6cd528821293a14b7a23ce4cea9a56f1

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