44caliber | 077208157453c61a8e0e0595da78aaffac3731f594918cc0b7c2e75016b17812

General

Target

Insidious.exe
Size

303KB
MD5

76479a85ccdb095400ce6f8e49f6f96c
SHA1

dfec26827b24892ba64c748bedfc48b8f83723fa
SHA256

077208157453c61a8e0e0595da78aaffac3731f594918cc0b7c2e75016b17812
SHA512

b77c51a9e24fc06384ed38dcff109a37e95076ccc80bc7a041e75f400ebca77a3cadab207df1f3048bd28193ed9425e3a4ce347f1da7adb3fb30b2d27f28e41e
SSDEEP

6144:Cb4T6MDdbICydeBrdcQG3yf51+/wjmA1D0phr:CbGhcQG3yB1aK1D8r

Score

10^/10

44caliber spyware stealer

Malware Config

Extracted

Family

44caliber

C2

https://discord.com/api/webhooks/1300845993885171797/d6XLWleeGXHsZqUyCp-qA8LBbM-bHv706qhOGiaznpjmNKEE5oNNgdQn4SftKZB758x_

Signatures

44Caliber
An open source infostealer written in C#.
stealer 44caliber
44Caliber family
44caliber
Reads user/profile data of web browsers 3 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

Credentials from Web Browsers
T1555.003
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 3 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
2	freegeoip.app
4	freegeoip.app
64	freegeoip.app

Suspicious behavior: EnumeratesProcesses 9 IoCs

pid	Process
5116	Insidious.exe
5116	Insidious.exe
5116	Insidious.exe
4804	Insidious.exe
4804	Insidious.exe
4804	Insidious.exe
2020	Insidious.exe
2020	Insidious.exe
2020	Insidious.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	5116	Insidious.exe
Token: SeDebugPrivilege	4804	Insidious.exe
Token: SeDebugPrivilege	2020	Insidious.exe

C:\Users\Admin\AppData\Local\Temp\Insidious.exe
"C:\Users\Admin\AppData\Local\Temp\Insidious.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:5116

C:\Windows\System32\rundll32.exe
C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
1⤵
PID:488

C:\Users\Admin\AppData\Local\Temp\Insidious.exe
"C:\Users\Admin\AppData\Local\Temp\Insidious.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:4804

C:\Users\Admin\AppData\Local\Temp\Insidious.exe
"C:\Users\Admin\AppData\Local\Temp\Insidious.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2020

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials from Password Stores

1

T1555

Credentials from Web Browsers

1

T1555.003

Unsecured Credentials

2

T1552

Credentials In Files

2

T1552.001

Discovery

Lateral Movement

Collection

Data from Local System

2

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\44\Browsers\Firefox\Bookmarks.txt

Filesize
105B

MD5
2e9d094dda5cdc3ce6519f75943a4ff4

SHA1
5d989b4ac8b699781681fe75ed9ef98191a5096c

SHA256
c84c98bbf5e0ef9c8d0708b5d60c5bb656b7d6be5135d7f7a8d25557e08cf142

SHA512
d1f7eed00959e902bdb2125b91721460d3ff99f3bdfc1f2a343d4f58e8d4e5e5a06c0c6cdc0379211c94510f7c00d7a8b34fa7d0ca0c3d54cbbe878f1e9812b7

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpBFA2.tmp.dat

Filesize
114KB

MD5
990c8183444f0dbb4f8d643c17b235a9

SHA1
7813e3d8ea6355c4c73da5175f96551f8f4fa30f

SHA256
f16719e300b80c1283ef68c5980a0b4261f245aa0c832c04b4db7d58ade35f4e

SHA512
2cdfee733a78519fbc342f69d829ad8732d07c81cd277c3ba7711223441dd1cc99d466d07d7c332d2f5c654ceaa06c0dff0a1be0bc30c35808b0119e03f111e5

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpBFB5.tmp.dat

Filesize
116KB

MD5
f70aa3fa04f0536280f872ad17973c3d

SHA1
50a7b889329a92de1b272d0ecf5fce87395d3123

SHA256
8d782aa65de6db3538a14da82216e96d5e0a3c60496726e3541a8165bccc65f8

SHA512
30675c5c610d9aa32a4c4a4d9c3af7570823cd197f8d2a709222c78e2cd15304bbed80e233e3674ec2f6e33d1961c67fd6a46dc8ba8b1a301cd0722932c03c84

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpEEF0.tmp.tmpdb

Filesize
5.0MB

MD5
272808b33c7ad60a7c2cd5f4b26674f2

SHA1
2c16795c74d5e5cfd9f79bcdba42bb4f6fea5ec5

SHA256
8dfd5bd51acacc69dde78fe280ecf0685f8ec281d790cd2409dd4c593eaeefbb

SHA512
2cac1bde55d82ac119fb1e057b71435dd6ff1035336a83b785a61d51183afbae6a539aa2c11dfb031cb27ffbbaa04f4c78e99ab4a77c588e6239d52f89bc9aae

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpEF01.tmp.dat

Filesize
40KB

MD5
a182561a527f929489bf4b8f74f65cd7

SHA1
8cd6866594759711ea1836e86a5b7ca64ee8911f

SHA256
42aad7886965428a941508b776a666a4450eb658cb90e80fae1e7457fc71f914

SHA512
9bc3bf5a82f6f057e873adebd5b7a4c64adef966537ab9c565fe7c4bb3582e2e485ff993d5ab8a6002363231958fabd0933b48811371b8c155eaa74592b66558

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpEF03.tmp.tmpdb

Filesize
96KB

MD5
40f3eb83cc9d4cdb0ad82bd5ff2fb824

SHA1
d6582ba879235049134fa9a351ca8f0f785d8835

SHA256
cdd772b00ae53d4050150552b67028b7344bb1d345bceb495151cc969c27a0a0

SHA512
cdd4dbf0b1ba73464cd7c5008dc05458862e5f608e336b53638a14965becd4781cdea595fd6bd18d0bf402dccffd719da292a6ce67d359527b4691dc6d6d4cc2

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpEF34.tmp.dat

Filesize
48KB

MD5
349e6eb110e34a08924d92f6b334801d

SHA1
bdfb289daff51890cc71697b6322aa4b35ec9169

SHA256
c9fd7be4579e4aa942e8c2b44ab10115fa6c2fe6afd0c584865413d9d53f3b2a

SHA512
2a635b815a5e117ea181ee79305ee1baf591459427acc5210d8c6c7e447be3513ead871c605eb3d32e4ab4111b2a335f26520d0ef8c1245a4af44e1faec44574

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpEF35.tmp.dat

Filesize
20KB

MD5
49693267e0adbcd119f9f5e02adf3a80

SHA1
3ba3d7f89b8ad195ca82c92737e960e1f2b349df

SHA256
d76e7512e496b7c8d9fcd3010a55e2e566881dc6dacaf0343652a4915d47829f

SHA512
b4b9fcecf8d277bb0ccbb25e08f3559e3fc519d85d8761d8ad5bca983d04eb55a20d3b742b15b9b31a7c9187da40ad5c48baa7a54664cae4c40aa253165cbaa2

Download Submit
memory/4804-67-0x00007FFAEE910000-0x00007FFAEF3D1000-memory.dmp

Filesize
10.8MB

Download
memory/4804-56-0x00007FFAEE910000-0x00007FFAEF3D1000-memory.dmp

Filesize
10.8MB

Download
memory/4804-33-0x00007FFAEE913000-0x00007FFAEE915000-memory.dmp

Filesize
8KB

Download
memory/5116-1-0x000001E3DD0C0000-0x000001E3DD112000-memory.dmp

Filesize
328KB

Download
memory/5116-32-0x00007FFAF18E0000-0x00007FFAF23A1000-memory.dmp

Filesize
10.8MB

Download
memory/5116-24-0x00007FFAF18E0000-0x00007FFAF23A1000-memory.dmp

Filesize
10.8MB

Download
memory/5116-0-0x00007FFAF18E3000-0x00007FFAF18E5000-memory.dmp

Filesize
8KB

Download

Analysis

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