44caliber | 29e74d69dbe506f07c91cd245427379aebc67b1c24dafc2cd0bde49ed6fd5cee

Analysis

max time kernel
28s
max time network
30s
platform
windows7_x64
resource
win7-20230220-en
resource tags

arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system
submitted
11-04-2023 19:41

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General

Target

7zip.exe
Size

303KB
MD5

f9484530eef5af91375b16ad1312dd29
SHA1

0bf165ea23cf50314f63efc6b1fe70dfc513fc9a
SHA256

29e74d69dbe506f07c91cd245427379aebc67b1c24dafc2cd0bde49ed6fd5cee
SHA512

6683fb523fed816538c763859cbad5805b03334521d4ca83be1fff30d8cb84bc836ae1612d677accb984000d45644bfcadf9618e63ede98e2643b5702d93c0ba
SSDEEP

6144:n+AC6MDdbICydeBWJaDNnqrMtt1KLIbldMWA1D0Usje:n+vzDNnqrqYd1Dkje

Score

10^/10

44caliber spyware stealer

Malware Config

Extracted

Family

44caliber

https://discord.com/api/webhooks/1095429503737675886/XSOjpaYnkVlwzQqXu4kvtIMhmZQVCMFwUVjdoKgnPXh4ER5XWIZ-0wzCDA36bKxszrIs

Signatures

44Caliber
An open source infostealer written in C#.
stealer 44caliber
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081
Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
spyware

Data from Local System
T1005

Credentials in Files
T1081
Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

604 1376 WerFault.exe 7zip.exe
Suspicious behavior: EnumeratesProcesses 3 IoCs

Processes:

7zip.exe

pid process

1376 7zip.exe
1376 7zip.exe
1376 7zip.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

7zip.exe

description pid process

Token: SeDebugPrivilege 1376 7zip.exe

pid	pid_target	process	target process
604	1376	WerFault.exe	7zip.exe

pid	process
1376	7zip.exe
1376	7zip.exe
1376	7zip.exe

description	pid	process
Token: SeDebugPrivilege	1376	7zip.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

7zip.exe

description	pid	process	target process
PID 1376 wrote to memory of 604	1376	7zip.exe	WerFault.exe
PID 1376 wrote to memory of 604	1376	7zip.exe	WerFault.exe
PID 1376 wrote to memory of 604	1376	7zip.exe	WerFault.exe

C:\Users\Admin\AppData\Local\Temp\7zip.exe
"C:\Users\Admin\AppData\Local\Temp\7zip.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1376

C:\Windows\system32\WerFault.exe
C:\Windows\system32\WerFault.exe -u -p 1376 -s 1032
2⤵
- Program crash
PID:604

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials in Files

T1081

Discovery

Lateral Movement

Collection

Data from Local System

T1005

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

memory/1376-54-0x0000000000C50000-0x0000000000CA2000-memory.dmp

Filesize
328KB

Download
memory/1376-74-0x0000000000BD0000-0x0000000000C50000-memory.dmp

Filesize
512KB

Download
memory/1376-75-0x0000000000BD0000-0x0000000000C50000-memory.dmp

Filesize
512KB

Download