arkei | fb368927d9051a0ed52610ad43849d1b0cdf2acee3bb1bf88c63e3fce54a4f0f

Analysis

max time kernel
112s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20220331-en
submitted
12/04/2022, 12:38

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General

Target
837547af8d2a1f60f8bbe09066f0ffa2.exe
Size 692KB
Sample220412-pt2wzabdek
SHA256 fb368927d9051a0ed52610ad43849d1b0cdf2acee3bb1bf88c63e3fce54a4f0f
MD5 837547af8d2a1f60f8bbe09066f0ffa2
SHA1 727421a8ea79d0c0562870c33d055224c7c9a4bc
SHA512 579fe72723076eb6605660258caf1b8b2a2cf4f05c50f15c0a6a1d8226c13eb847ade0230e5bb1ba21c820e6b2ae0662b33725e65f7b43e0fb2f98c4e41d6961
MD5 SHA1 SHA512

Score

10^/10

arkei redline 04062022 default discovery infostealer spyware stealer suricata

Malware Config

Extracted

Family

redline

Botnet

04062022

62.204.41.166:27688

Attributes

auth_value
48182fe753fa2aff7472da064aa2a5d9

Extracted

Family

arkei

Botnet

Default

http://62.204.41.69/p8jG9WvgbE.php

Signatures

Arkei
Arkei is an infostealer written in C++.
stealer arkei
RedLine
RedLine Stealer is a malware family written in C#, first appearing in early 2020.
infostealer redline

RedLine Payload 2 IoCs

resource	yara_rule
behavioral2/memory/3412-134-0x0000000000400000-0x0000000000420000-memory.dmp	family_redline
behavioral2/memory/3412-135-0x0000000000400000-0x0000000000424000-memory.dmp	family_redline

suricata: ET MALWARE Base64 Encoded Stealer Config from Server - %APPDATA% M4
suricata: ET MALWARE Base64 Encoded Stealer Config from Server - %APPDATA% M4
suricata

Executes dropped EXE 1 IoCs

pid	Process
4284	dcaqbmme.exe

Checks computer location settings 2 TTPs 2 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-1082102374-1487407228-1886994731-1000\Control Panel\International\Geo\Nation	837547af8d2a1f60f8bbe09066f0ffa2.exe
Key value queried	\REGISTRY\USER\S-1-5-21-1082102374-1487407228-1886994731-1000\Control Panel\International\Geo\Nation	837547af8d2a1f60f8bbe09066f0ffa2.exe

Loads dropped DLL 2 IoCs

pid	Process
1240	837547af8d2a1f60f8bbe09066f0ffa2.exe
1240	837547af8d2a1f60f8bbe09066f0ffa2.exe

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
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

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 1508 set thread context of 1240	1508	837547af8d2a1f60f8bbe09066f0ffa2.exe	83
PID 4284 set thread context of 3412	4284	dcaqbmme.exe	84

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

System Information Discovery
T1082

Checks processor information in registry 2 TTPs 2 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	837547af8d2a1f60f8bbe09066f0ffa2.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	837547af8d2a1f60f8bbe09066f0ffa2.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
1060	timeout.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
3412	regasm.exe

Suspicious behavior: MapViewOfSection 2 IoCs

pid	Process
1508	837547af8d2a1f60f8bbe09066f0ffa2.exe
4284	dcaqbmme.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3412	regasm.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
1508	837547af8d2a1f60f8bbe09066f0ffa2.exe
4284	dcaqbmme.exe

Suspicious use of WriteProcessMemory 17 IoCs

description	pid	Process	procid_target
PID 1508 wrote to memory of 4284	1508	837547af8d2a1f60f8bbe09066f0ffa2.exe	81
PID 1508 wrote to memory of 4284	1508	837547af8d2a1f60f8bbe09066f0ffa2.exe	81
PID 1508 wrote to memory of 4284	1508	837547af8d2a1f60f8bbe09066f0ffa2.exe	81
PID 1508 wrote to memory of 1240	1508	837547af8d2a1f60f8bbe09066f0ffa2.exe	83
PID 1508 wrote to memory of 1240	1508	837547af8d2a1f60f8bbe09066f0ffa2.exe	83
PID 1508 wrote to memory of 1240	1508	837547af8d2a1f60f8bbe09066f0ffa2.exe	83
PID 1508 wrote to memory of 1240	1508	837547af8d2a1f60f8bbe09066f0ffa2.exe	83
PID 4284 wrote to memory of 3412	4284	dcaqbmme.exe	84
PID 4284 wrote to memory of 3412	4284	dcaqbmme.exe	84
PID 4284 wrote to memory of 3412	4284	dcaqbmme.exe	84
PID 4284 wrote to memory of 3412	4284	dcaqbmme.exe	84
PID 1240 wrote to memory of 1088	1240	837547af8d2a1f60f8bbe09066f0ffa2.exe	88
PID 1240 wrote to memory of 1088	1240	837547af8d2a1f60f8bbe09066f0ffa2.exe	88
PID 1240 wrote to memory of 1088	1240	837547af8d2a1f60f8bbe09066f0ffa2.exe	88
PID 1088 wrote to memory of 1060	1088	cmd.exe	90
PID 1088 wrote to memory of 1060	1088	cmd.exe	90
PID 1088 wrote to memory of 1060	1088	cmd.exe	90

C:\Users\Admin\AppData\Local\Temp\837547af8d2a1f60f8bbe09066f0ffa2.exe
"C:\Users\Admin\AppData\Local\Temp\837547af8d2a1f60f8bbe09066f0ffa2.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1508
- C:\Users\Admin\AppData\Local\Temp\dcaqbmme.exe
  "C:\Users\Admin\AppData\Local\Temp\dcaqbmme.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:4284
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe"
    3⤵
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:3412
- C:\Users\Admin\AppData\Local\Temp\837547af8d2a1f60f8bbe09066f0ffa2.exe
  "C:\Users\Admin\AppData\Local\Temp\837547af8d2a1f60f8bbe09066f0ffa2.exe"
  2⤵
  - Checks computer location settings
  - Loads dropped DLL
  - Checks processor information in registry
  - Suspicious use of WriteProcessMemory
  PID:1240
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\System32\cmd.exe" /c timeout /t 5 & del /f /q "C:\Users\Admin\AppData\Local\Temp\837547af8d2a1f60f8bbe09066f0ffa2.exe" & exit
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:1088
  - - C:\Windows\SysWOW64\timeout.exe
      timeout /t 5
      4⤵
      Delays execution with timeout.exe
      PID:1060

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials in Files

T1081

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

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Downloads

mozglue.dll

Path C:\ProgramData\mozglue.dll
Size 133KB
SHA256 3fe6b1c54b8cf28f571e0c5d6636b4069a8ab00b4f11dd842cfec00691d0c9cd
MD5 8f73c08a9660691143661bf7332c3c27
SHA1 37fa65dd737c50fda710fdbde89e51374d0c204a
SHA512 0042ecf9b3571bb5eba2de893e8b2371df18f7c5a589f52ee66e4bfbaa15a5b8b7cc6a155792aaa8988528c27196896d5e82e1751c998bacea0d92395f66ad89
SSDEEP 3072:7Gyzk/x2Wp53pUzPoNpj/kVghp1qt/dXDyp4D2JJJvPhrSeTuk:6yQ2Wp53iO/kVghp12/dXDyyD2JJJvPR
MD5 SHA1 SHA512 SSDEEP

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nss3.dll

Path C:\ProgramData\nss3.dll
Size 1.2MB
SHA256 e2935b5b28550d47dc971f456d6961f20d1633b4892998750140e0eaa9ae9d78
MD5 bfac4e3c5908856ba17d41edcd455a51
SHA1 8eec7e888767aa9e4cca8ff246eb2aacb9170428
SHA512 2565bab776c4d732ffb1f9b415992a4c65b81bcd644a9a1df1333a269e322925fc1df4f76913463296efd7c88ef194c3056de2f1ca1357d7b5fe5ff0da877a66
SSDEEP 24576:Sb5zzlswYNYLVJAwfpeYQ1Dw/fEE8DhSJVIVfRyAkgO6S/V/jbHpls4MSRSMxkoo:4zW5ygDwnEZIYkjgWjblMSRSMqH
MD5 SHA1 SHA512 SSDEEP

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dcaqbmme.exe

Path C:\Users\Admin\AppData\Local\Temp\dcaqbmme.exe
Size 324KB
SHA256 326923ce18fd7a9c8210697d8ffab62481db036588c12f05a21798fcf67bd9a6
MD5 2652215d4d7a57fc45691bb1d53fb6ce
SHA1 15838b55aa4b2dc05ca09b2b958056fcb17776bd
SHA512 f4694966c4beb4e9cca674b85311de400f7c9ebf7eb9e0e271074281447513d562757bb477a7884b02ba9cdc8caf9b3952afcc0e66b9a36c6c167aa5e731ca59
SSDEEP 6144:Vk0sdrHKMq6qCZHSLl6gw1s16Rl3Xz2UOFtiQqj6QyFpMkdLpdE:S0sFGm45w1s16RlXz2UOFoJjjy3MkxE
MD5 SHA1 SHA512 SSDEEP

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dcaqbmme.exe

Path C:\Users\Admin\AppData\Local\Temp\dcaqbmme.exe
Size 324KB
SHA256 326923ce18fd7a9c8210697d8ffab62481db036588c12f05a21798fcf67bd9a6
MD5 2652215d4d7a57fc45691bb1d53fb6ce
SHA1 15838b55aa4b2dc05ca09b2b958056fcb17776bd
SHA512 f4694966c4beb4e9cca674b85311de400f7c9ebf7eb9e0e271074281447513d562757bb477a7884b02ba9cdc8caf9b3952afcc0e66b9a36c6c167aa5e731ca59
SSDEEP 6144:Vk0sdrHKMq6qCZHSLl6gw1s16Rl3Xz2UOFtiQqj6QyFpMkdLpdE:S0sFGm45w1s16RlXz2UOFoJjjy3MkxE
MD5 SHA1 SHA512 SSDEEP

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memory/1240-141-0x0000000060900000-0x0000000060992000-memory.dmp

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memory/1240-136-0x0000000000400000-0x000000000043C000-memory.dmp

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memory/1508-132-0x0000000002410000-0x0000000002417000-memory.dmp

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memory/3412-140-0x0000000005400000-0x000000000543C000-memory.dmp

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memory/3412-171-0x0000000006A40000-0x0000000006A90000-memory.dmp

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memory/3412-138-0x0000000005390000-0x00000000053A2000-memory.dmp

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memory/3412-137-0x00000000058F0000-0x0000000005F08000-memory.dmp

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memory/3412-135-0x0000000000400000-0x0000000000424000-memory.dmp

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memory/3412-134-0x0000000000400000-0x0000000000420000-memory.dmp

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memory/3412-139-0x00000000054C0000-0x00000000055CA000-memory.dmp

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memory/3412-164-0x0000000006210000-0x0000000006276000-memory.dmp

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memory/3412-165-0x0000000006400000-0x0000000006476000-memory.dmp

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memory/3412-166-0x0000000006520000-0x00000000065B2000-memory.dmp

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memory/3412-167-0x0000000006B70000-0x0000000007114000-memory.dmp

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memory/3412-168-0x0000000006600000-0x000000000661E000-memory.dmp

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memory/3412-169-0x0000000007120000-0x00000000072E2000-memory.dmp

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memory/3412-170-0x0000000007820000-0x0000000007D4C000-memory.dmp

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