arkei | b3c5e8250ec320fd546df876a5be7ca4e9a70696dc2373ce5ff670def95d5238

General

Target

b3c5e8250ec320fd546df876a5be7ca4e9a70696dc2373ce5ff670def95d5238.exe
Size

292KB
MD5

75a4c25e5af7c58034b2323a11c63ce2
SHA1

51bdcfb40c10aebb1374a0a6257d1c63d88a608b
SHA256

b3c5e8250ec320fd546df876a5be7ca4e9a70696dc2373ce5ff670def95d5238
SHA512

5c3d802a28aaacfdea2c21f32bfbb9383f0f3adc09f89616517358e6b3ebfae1d778cc49a1f529133d424cedc1f1eb5f00d6d4e3f9f760ed8d86820ead65c2c5

Score

10^/10

arkei spyware stealer

Malware Config

Signatures

Arkei
Arkei is an infostealer written in C++.
stealer arkei

Arkei Stealer Payload 1 IoCs

stealer

Processes:

resource	yara_rule
behavioral1/memory/3628-115-0x0000000000400000-0x000000000044D000-memory.dmp	family_arkei

Downloads MZ/PE file

Loads dropped DLL 3 IoCs

Processes:

b3c5e8250ec320fd546df876a5be7ca4e9a70696dc2373ce5ff670def95d5238.exe

pid	process
3628	b3c5e8250ec320fd546df876a5be7ca4e9a70696dc2373ce5ff670def95d5238.exe
3628	b3c5e8250ec320fd546df876a5be7ca4e9a70696dc2373ce5ff670def95d5238.exe
3628	b3c5e8250ec320fd546df876a5be7ca4e9a70696dc2373ce5ff670def95d5238.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

3572 3628 WerFault.exe b3c5e8250ec320fd546df876a5be7ca4e9a70696dc2373ce5ff670def95d5238.exe

pid	pid_target	process	target process
3572	3628	WerFault.exe	b3c5e8250ec320fd546df876a5be7ca4e9a70696dc2373ce5ff670def95d5238.exe

Suspicious behavior: EnumeratesProcesses 13 IoCs

Processes:

WerFault.exe

pid	process
3572	WerFault.exe
3572	WerFault.exe
3572	WerFault.exe
3572	WerFault.exe
3572	WerFault.exe
3572	WerFault.exe
3572	WerFault.exe
3572	WerFault.exe
3572	WerFault.exe
3572	WerFault.exe
3572	WerFault.exe
3572	WerFault.exe
3572	WerFault.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

WerFault.exe

description pid process

Token: SeRestorePrivilege 3572 WerFault.exe
Token: SeBackupPrivilege 3572 WerFault.exe
Token: SeDebugPrivilege 3572 WerFault.exe

description	pid	process
Token: SeRestorePrivilege	3572	WerFault.exe
Token: SeBackupPrivilege	3572	WerFault.exe
Token: SeDebugPrivilege	3572	WerFault.exe

C:\Users\Admin\AppData\Local\Temp\b3c5e8250ec320fd546df876a5be7ca4e9a70696dc2373ce5ff670def95d5238.exe
"C:\Users\Admin\AppData\Local\Temp\b3c5e8250ec320fd546df876a5be7ca4e9a70696dc2373ce5ff670def95d5238.exe"
1⤵
- Loads dropped DLL
PID:3628
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3628 -s 1176
  2⤵
  - Program crash
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3572

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

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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/3628-114-0x00000000021B0000-0x00000000021DD000-memory.dmp

Filesize
180KB

Download
memory/3628-115-0x0000000000400000-0x000000000044D000-memory.dmp

Filesize
308KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads