Analysis
- max time kernel
121s - max time network
162s - platform
windows10_x64 - resource
win10-en-20210920 - submitted
22/10/2021, 18:42
General
- Target 81bf4e8775d58dde713255bd642662b1.exe
- Size 714KB
- Sample211022-xcb8zschej
- SHA256 4067d6f3dd428f8e2dd9913ff61fc70d059052af9fb475600ffeb80027589378
Malware Config
Extracted
-
redline
-
mix22.10
-
185.215.113.15:21508
Signatures
- RedLine
RedLine Stealer is a malware family written in C#, first appearing in early 2020.
- RedLine Payload 2 IoCs
- suricata: ET MALWARE AutoHotkey Downloader Checkin via IPLogger
suricata: ET MALWARE AutoHotkey Downloader Checkin via IPLogger
- suricata: ET MALWARE Terse alphanumeric executable downloader high likelihood of being hostile
suricata: ET MALWARE Terse alphanumeric executable downloader high likelihood of being hostile
- Downloads MZ/PE file
- Executes dropped EXE 1 IoCs
- Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
- Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
- Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
- Legitimate hosting services abused for malware hosting/C2 1 TTPs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
- Checks processor information in registry 2 TTPs 2 IoCs
Processor information is often read in order to detect sandboxing environments.
- Suspicious behavior: EnumeratesProcesses 1 IoCs
- Suspicious use of AdjustPrivilegeToken 1 IoCs
- Suspicious use of WriteProcessMemory 3 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\81bf4e8775d58dde713255bd642662b1.exe"C:\Users\Admin\AppData\Local\Temp\81bf4e8775d58dde713255bd642662b1.exe"1⤵
- Checks processor information in registry
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Roaming\wowsfree\arinesp.exearinesp.exe2⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
memory/1568-127-0x0000000007A10000-0x0000000007A11000-memory.dmp
memory/1568-138-0x0000000008C00000-0x0000000008C01000-memory.dmp
memory/1568-141-0x00000000091B0000-0x00000000091B1000-memory.dmp
memory/1568-140-0x0000000008FE0000-0x0000000008FE1000-memory.dmp
memory/1568-122-0x0000000003180000-0x00000000031AF000-memory.dmp
memory/1568-121-0x0000000002F20000-0x000000000306A000-memory.dmp
memory/1568-123-0x0000000000400000-0x0000000002F1A000-memory.dmp
memory/1568-124-0x0000000004E70000-0x0000000004E8C000-memory.dmp
memory/1568-125-0x0000000007510000-0x0000000007511000-memory.dmp
memory/1568-126-0x0000000005130000-0x000000000514A000-memory.dmp
memory/1568-139-0x0000000008E00000-0x0000000008E01000-memory.dmp
memory/1568-129-0x0000000008040000-0x0000000008041000-memory.dmp
memory/1568-131-0x0000000004EE3000-0x0000000004EE4000-memory.dmp
memory/1568-130-0x0000000004EE2000-0x0000000004EE3000-memory.dmp
memory/1568-132-0x0000000008070000-0x0000000008071000-memory.dmp
memory/1568-133-0x0000000008180000-0x0000000008181000-memory.dmp
memory/1568-134-0x0000000004EE4000-0x0000000004EE6000-memory.dmp
memory/1568-135-0x0000000008200000-0x0000000008201000-memory.dmp
memory/1568-136-0x00000000086D0000-0x00000000086D1000-memory.dmp
memory/1568-137-0x0000000008B70000-0x0000000008B71000-memory.dmp
memory/1568-128-0x0000000004EE0000-0x0000000004EE1000-memory.dmp
memory/2596-115-0x0000000000BBB000-0x0000000000C27000-memory.dmp
memory/2596-116-0x0000000000DB0000-0x0000000000E7F000-memory.dmp
memory/2596-117-0x0000000000400000-0x00000000008E2000-memory.dmp