arkei | 111dd17966a5f7058eb1cfc468c1d062602437a69694aa05eff97d121d611408

General

Target

eufive_20210830-223756.exe
Size

264KB
MD5

134fac2ca9c3723cd6107a69f7f06c9e
SHA1

dd81965431606b8e940bb4a5f8f83a9b060d7f10
SHA256

111dd17966a5f7058eb1cfc468c1d062602437a69694aa05eff97d121d611408
SHA512

3d170c5cfaae1ad3f0288afae0a45ce43b852196c74b779618ccaa6dd53009ca3342aa867c6e44164c34b295698b9bf096b640cceeb183e82b1e6cb4f379ada3

Score

10^/10

arkei spyware stealer

Malware Config

Signatures

Arkei
Arkei is an infostealer written in C++.
stealer arkei
Suspicious use of NtCreateProcessExOtherParentProcess 1 IoCs

Processes:

WerFault.exe

description pid process target process

PID 920 created 572 920 WerFault.exe eufive_20210830-223756.exe

description	pid	process	target process
PID 920 created 572	920	WerFault.exe	eufive_20210830-223756.exe

Arkei Stealer Payload 2 IoCs

stealer

Processes:

resource	yara_rule
behavioral2/memory/572-115-0x00000000001C0000-0x00000000001D9000-memory.dmp	family_arkei
behavioral2/memory/572-116-0x0000000000400000-0x00000000023AC000-memory.dmp	family_arkei

Downloads MZ/PE file
Loads dropped DLL 3 IoCs

Processes:

eufive_20210830-223756.exe

pid process

572 eufive_20210830-223756.exe
572 eufive_20210830-223756.exe
572 eufive_20210830-223756.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
Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

920 572 WerFault.exe eufive_20210830-223756.exe

pid	process
572	eufive_20210830-223756.exe
572	eufive_20210830-223756.exe
572	eufive_20210830-223756.exe

pid	pid_target	process	target process
920	572	WerFault.exe	eufive_20210830-223756.exe

Suspicious behavior: EnumeratesProcesses 14 IoCs

Processes:

WerFault.exe

pid	process
920	WerFault.exe
920	WerFault.exe
920	WerFault.exe
920	WerFault.exe
920	WerFault.exe
920	WerFault.exe
920	WerFault.exe
920	WerFault.exe
920	WerFault.exe
920	WerFault.exe
920	WerFault.exe
920	WerFault.exe
920	WerFault.exe
920	WerFault.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

WerFault.exe

description pid process

Token: SeRestorePrivilege 920 WerFault.exe
Token: SeBackupPrivilege 920 WerFault.exe
Token: SeDebugPrivilege 920 WerFault.exe

description	pid	process
Token: SeRestorePrivilege	920	WerFault.exe
Token: SeBackupPrivilege	920	WerFault.exe
Token: SeDebugPrivilege	920	WerFault.exe

C:\Users\Admin\AppData\Local\Temp\eufive_20210830-223756.exe
"C:\Users\Admin\AppData\Local\Temp\eufive_20210830-223756.exe"
1⤵
- Loads dropped DLL
PID:572
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 572 -s 1108
  2⤵
  - Suspicious use of NtCreateProcessExOtherParentProcess
  - Program crash
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:920

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials in Files

1

T1081

Discovery

Lateral Movement

Collection

Data from Local System

1

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

\ProgramData\mozglue.dll

MD5
8f73c08a9660691143661bf7332c3c27

SHA1
37fa65dd737c50fda710fdbde89e51374d0c204a

SHA256
3fe6b1c54b8cf28f571e0c5d6636b4069a8ab00b4f11dd842cfec00691d0c9cd

SHA512
0042ecf9b3571bb5eba2de893e8b2371df18f7c5a589f52ee66e4bfbaa15a5b8b7cc6a155792aaa8988528c27196896d5e82e1751c998bacea0d92395f66ad89

Download Submit
\ProgramData\nss3.dll

MD5
bfac4e3c5908856ba17d41edcd455a51

SHA1
8eec7e888767aa9e4cca8ff246eb2aacb9170428

SHA256
e2935b5b28550d47dc971f456d6961f20d1633b4892998750140e0eaa9ae9d78

SHA512
2565bab776c4d732ffb1f9b415992a4c65b81bcd644a9a1df1333a269e322925fc1df4f76913463296efd7c88ef194c3056de2f1ca1357d7b5fe5ff0da877a66

Download Submit
\ProgramData\sqlite3.dll

MD5
e477a96c8f2b18d6b5c27bde49c990bf

SHA1
e980c9bf41330d1e5bd04556db4646a0210f7409

SHA256
16574f51785b0e2fc29c2c61477eb47bb39f714829999511dc8952b43ab17660

SHA512
335a86268e7c0e568b1c30981ec644e6cd332e66f96d2551b58a82515316693c1859d87b4f4b7310cf1ac386cee671580fdd999c3bcb23acf2c2282c01c8798c

Download Submit
memory/572-115-0x00000000001C0000-0x00000000001D9000-memory.dmp

Filesize
100KB

Download
memory/572-116-0x0000000000400000-0x00000000023AC000-memory.dmp

Filesize
31.7MB

Download

Analysis

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