44caliber | f0957b9d77cd4228a0cf2ed601b6392048b299cfb4096382638066b637a4127d

General

Target

a12988c8c14e8f9738b5a19df4f2fb68.exe
Size

1.7MB
MD5

a12988c8c14e8f9738b5a19df4f2fb68
SHA1

20f006f38129e1ea031566d61b5b45c292e4913f
SHA256

f0957b9d77cd4228a0cf2ed601b6392048b299cfb4096382638066b637a4127d
SHA512

943193e44c9c46e560e7df4487a39e4e649a19b51574ccf58f3fb31c54e492e41aac4d516fd299611d7f30b6d34166625e0a66b7a05c6020ee32257a06d32838
SSDEEP

49152:FVKNPoyN4N09vO/zyAtr3ziUx3IsggbU/COKqt:FV0taCGbyAlx3dK/JZ

Score

10^/10

44caliber blackguard spyware stealer

Malware Config

Extracted

Family

blackguard

C2

https://api.telegram.org/bot1815441105:AAFl78w0wG00_bQG4toKipjs8EBYjH37y6o/sendMessage?chat_id=548838106

Signatures

44Caliber
An open source infostealer written in C#.
stealer 44caliber
BlackGuard
Infostealer first seen in Late 2021.
stealer blackguard
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
T1552.001
Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
spyware

Data from Local System
T1005

Credentials In Files
T1552.001
Looks up external IP address via web service 2 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.

Processes:

flow ioc

6 freegeoip.app
9 freegeoip.app
Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

Processes:

a12988c8c14e8f9738b5a19df4f2fb68.exe

pid process

4016 a12988c8c14e8f9738b5a19df4f2fb68.exe

flow	ioc
6	freegeoip.app
9	freegeoip.app

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

Processes:

a12988c8c14e8f9738b5a19df4f2fb68.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\HARDWARE\Description\System\CentralProcessor\0	a12988c8c14e8f9738b5a19df4f2fb68.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	a12988c8c14e8f9738b5a19df4f2fb68.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

a12988c8c14e8f9738b5a19df4f2fb68.exe

pid	process
4016	a12988c8c14e8f9738b5a19df4f2fb68.exe
4016	a12988c8c14e8f9738b5a19df4f2fb68.exe
4016	a12988c8c14e8f9738b5a19df4f2fb68.exe
4016	a12988c8c14e8f9738b5a19df4f2fb68.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

a12988c8c14e8f9738b5a19df4f2fb68.exe

description pid process

Token: SeDebugPrivilege 4016 a12988c8c14e8f9738b5a19df4f2fb68.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

a12988c8c14e8f9738b5a19df4f2fb68.exe

pid process

4016 a12988c8c14e8f9738b5a19df4f2fb68.exe

description	pid	process
Token: SeDebugPrivilege	4016	a12988c8c14e8f9738b5a19df4f2fb68.exe

C:\Users\Admin\AppData\Local\Temp\a12988c8c14e8f9738b5a19df4f2fb68.exe
"C:\Users\Admin\AppData\Local\Temp\a12988c8c14e8f9738b5a19df4f2fb68.exe"
1⤵
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
PID:4016

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Unsecured Credentials

2

T1552

Credentials In Files

2

T1552.001

Discovery

Query Registry

1

T1012

System Information Discovery

1

T1082

Lateral Movement

Collection

Data from Local System

2

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\ProgramData\44\Browsers\Firefox\Bookmarks.txt
Filesize
105B

MD5
2e9d094dda5cdc3ce6519f75943a4ff4

SHA1
5d989b4ac8b699781681fe75ed9ef98191a5096c

SHA256
c84c98bbf5e0ef9c8d0708b5d60c5bb656b7d6be5135d7f7a8d25557e08cf142

SHA512
d1f7eed00959e902bdb2125b91721460d3ff99f3bdfc1f2a343d4f58e8d4e5e5a06c0c6cdc0379211c94510f7c00d7a8b34fa7d0ca0c3d54cbbe878f1e9812b7

Download Submit
C:\ProgramData\44\Process.txt
Filesize
1KB

MD5
15e24f8759475d336b4f98cb9730ecc1

SHA1
bc1b2c7f0520e18e784abf54b80e9b15555b99fa

SHA256
36f04a8fb38b93720f549d993042d9bc105564646e69a2928a6a10e2a53519af

SHA512
993bf4efccb81a11b6a8ed196b0496f2254d8c3dbabcb3526e418d6dea22296cebf07e131e803faa9cbc0b06d4efdc9679af8ab318eb33cd29d23d0254fe8a60

Download Submit
C:\ProgramData\44\Process.txt
Filesize
741B

MD5
4057ea196faf69ee7427cb9b173a0549

SHA1
096460cdce9800f9d02e9c3b50b66ef0abe559ff

SHA256
3774a1378bad420622fb142a05396e07e3f9c0348d93e7fec4035f988e77bc0d

SHA512
a57bd98cdcd394856b662a84a62570abc850534f18592717486606ec9a2117b5d52b74485bede5e47108abf6f2d98ead8e62dd02c6eb13fd080ed3eb2bdce83a

Download Submit
memory/4016-127-0x00000000074F0000-0x0000000007556000-memory.dmp

Filesize
408KB

Download
memory/4016-3-0x0000000006150000-0x0000000006160000-memory.dmp

Filesize
64KB

Download
memory/4016-38-0x0000000007030000-0x00000000070C2000-memory.dmp

Filesize
584KB

Download
memory/4016-39-0x0000000007680000-0x0000000007C24000-memory.dmp

Filesize
5.6MB

Download
memory/4016-1-0x00000000006F0000-0x0000000000BD2000-memory.dmp

Filesize
4.9MB

Download
memory/4016-0-0x00000000006F0000-0x0000000000BD2000-memory.dmp

Filesize
4.9MB

Download
memory/4016-2-0x0000000073F00000-0x00000000746B0000-memory.dmp

Filesize
7.7MB

Download
memory/4016-146-0x0000000007670000-0x0000000007678000-memory.dmp

Filesize
32KB

Download
memory/4016-145-0x00000000069B0000-0x00000000069BA000-memory.dmp

Filesize
40KB

Download
memory/4016-147-0x0000000007E80000-0x0000000007EA2000-memory.dmp

Filesize
136KB

Download
memory/4016-148-0x0000000007EB0000-0x0000000008204000-memory.dmp

Filesize
3.3MB

Download
memory/4016-152-0x00000000006F0000-0x0000000000BD2000-memory.dmp

Filesize
4.9MB

Download
memory/4016-153-0x0000000073F00000-0x00000000746B0000-memory.dmp

Filesize
7.7MB

Download

Analysis

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