44caliber | 9a3116e6c3d151a200859719980ee4cf2487217562312757b754774d266ca5b8

General

Target

b590138675ad5aa75e4753edfebab622.exe
Size

1.4MB
MD5

b590138675ad5aa75e4753edfebab622
SHA1

124eec668e6dc1bd1e4908089f5c874fd1a45937
SHA256

9a3116e6c3d151a200859719980ee4cf2487217562312757b754774d266ca5b8
SHA512

3f038e7dd129da5a2842abf7d37969e82ed9d30e89d611e8ca1f5b86098f4a8e6ae719826cabc43641bd5bd6cb047ad967ce8ae293f760755f64f5cae9370b9d
SSDEEP

24576:4vNIdb2DCPejfNy2Xp5nJdyEgBvKyNCkOxTsVTIAq2G4vXuQU5v8vJHLZRFe7JFf:8Nwb2uWJy2Xp5J4hRzNDaYIGGIXuQ8Q4

Score

10^/10

44caliber spyware stealer

Malware Config

Extracted

Family

44caliber

C2

https://discordapp.com/api/webhooks/873463242905755648/toN0X9zZYgcbFlkZ7jCqLk4I_sGhgsbHl5HJ9jgcfMn_Sw0HRHJneP9bBZz01msNSKLJ

Signatures

44Caliber
An open source infostealer written in C#.
stealer 44caliber

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-1-5-21-566096764-1992588923-1249862864-1000\Control Panel\International\Geo\Nation	MultiHack.exe
Key value queried	\REGISTRY\USER\S-1-5-21-566096764-1992588923-1249862864-1000\Control Panel\International\Geo\Nation	b590138675ad5aa75e4753edfebab622.exe

Executes dropped EXE 2 IoCs

pid	Process
4444	MultiHack.exe
4764	MultiHack v2.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
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.

flow	ioc
28	freegeoip.app
29	freegeoip.app

Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

pid	Process
4764	MultiHack v2.exe

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

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 value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	MultiHack v2.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\Description\System\CentralProcessor\0	MultiHack v2.exe

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\	b590138675ad5aa75e4753edfebab622.exe

Suspicious behavior: EnumeratesProcesses 7 IoCs

pid	Process
1212	b590138675ad5aa75e4753edfebab622.exe
1212	b590138675ad5aa75e4753edfebab622.exe
1212	b590138675ad5aa75e4753edfebab622.exe
4764	MultiHack v2.exe
4764	MultiHack v2.exe
4764	MultiHack v2.exe
4764	MultiHack v2.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1212	b590138675ad5aa75e4753edfebab622.exe
Token: SeDebugPrivilege	4764	MultiHack v2.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4764	MultiHack v2.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 1212 wrote to memory of 4444	1212	b590138675ad5aa75e4753edfebab622.exe	91
PID 1212 wrote to memory of 4444	1212	b590138675ad5aa75e4753edfebab622.exe	91
PID 1212 wrote to memory of 4444	1212	b590138675ad5aa75e4753edfebab622.exe	91
PID 4444 wrote to memory of 4764	4444	MultiHack.exe	92
PID 4444 wrote to memory of 4764	4444	MultiHack.exe	92
PID 4444 wrote to memory of 4764	4444	MultiHack.exe	92

C:\Users\Admin\AppData\Local\Temp\b590138675ad5aa75e4753edfebab622.exe
"C:\Users\Admin\AppData\Local\Temp\b590138675ad5aa75e4753edfebab622.exe"
1⤵
- Checks computer location settings
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1212
- C:\Users\Admin\AppData\Local\Temp\MultiHack.exe
  "C:\Users\Admin\AppData\Local\Temp\MultiHack.exe"
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  - Suspicious use of WriteProcessMemory
  PID:4444
- - C:\Users\Admin\AppData\Local\Temp\MultiHack v2.exe
    "C:\Users\Admin\AppData\Local\Temp\MultiHack v2.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of NtSetInformationThreadHideFromDebugger
    - Checks processor information in registry
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of SetWindowsHookEx
    PID:4764

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

2

T1012

System Information Discovery

3

T1082

Lateral Movement

Collection

Data from Local System

2

T1005

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\MultiHack v2.exe

Filesize
1.2MB

MD5
f915e72fe9d0d9f8f28158077b825b38

SHA1
b5db3ae9c671b2593d7288acf54189fd33f0da94

SHA256
097bb99cfcbbf739f5c361673fb5efb6e5b0ea81e4efbffcd3824b5b94c38bc7

SHA512
28f16a55a471563139b9d24460f1d938968938796b5efdf79c6def2a411109bfbbaef83c00881674824f9baef114ba045c25af69a65bb9173b2be25550ae0dd0

Download Submit
C:\Users\Admin\AppData\Local\Temp\MultiHack.exe

Filesize
1.5MB

MD5
e00bd983fd36b8f59e79ecc773adb273

SHA1
838b71043e090a5aa7ccfa1ce4c0d5f202cf337c

SHA256
2bbd6d7fe32ce72337be76abd548def8c28fa67a72d0d7d0c1a71272a97f1e80

SHA512
0a0e984f2ebd3effbc1f13b40b446e838d007d5edbf921888658588c61a2d3dd69531d4186cc258536f4080935730b2a6256e5d8db07644ef66c21647fb42a71

Download Submit
C:\Users\Admin\AppData\Roaming\44\Browsers\Firefox\Bookmarks.txt

Filesize
105B

MD5
2e9d094dda5cdc3ce6519f75943a4ff4

SHA1
5d989b4ac8b699781681fe75ed9ef98191a5096c

SHA256
c84c98bbf5e0ef9c8d0708b5d60c5bb656b7d6be5135d7f7a8d25557e08cf142

SHA512
d1f7eed00959e902bdb2125b91721460d3ff99f3bdfc1f2a343d4f58e8d4e5e5a06c0c6cdc0379211c94510f7c00d7a8b34fa7d0ca0c3d54cbbe878f1e9812b7

Download Submit
C:\Users\Admin\AppData\Roaming\44\Process.txt

Filesize
1KB

MD5
69f8a9586e4b65d1a77aa32a45f0c200

SHA1
5dbb9a7fe9e4af35d45d41d385a502362bc8d1f4

SHA256
1c557240fac45f72704631b9f66c7101b23f7d49aac49d0411066e425b846d4b

SHA512
47f182fe54bd778279b8d91914c2fbca857e9a8c942e5bd37c3d411a18ff655abb650868572827970318bc2f8f51bb8791cd098ccbd417ea58c4a1833d2f415b

Download Submit
C:\Users\Admin\AppData\Roaming\44\Process.txt

Filesize
743B

MD5
2dd8879185402fc6dc0ed774c12255dd

SHA1
5024723bc1636fde0d8529067778b653de0cb32e

SHA256
e0bfaf10b4eb167585a6e84a439485951abd565a3c5b4b03b4da64dbbe2bb9a7

SHA512
72c6342a479566dde66c0fa8009936888e53aa3f4f918f97be3e50d6e0150a3b9f2c03527cdb19674a50e52e71eef14f84eb85e24ad8dafeebffa7bf1dae4321

Download Submit
memory/1212-1-0x00007FFE53910000-0x00007FFE543D1000-memory.dmp

Filesize
10.8MB

Download
memory/1212-2-0x00000000026F0000-0x0000000002700000-memory.dmp

Filesize
64KB

Download
memory/1212-3-0x00000000026F0000-0x0000000002700000-memory.dmp

Filesize
64KB

Download
memory/1212-4-0x00000000026F0000-0x0000000002700000-memory.dmp

Filesize
64KB

Download
memory/1212-39-0x00007FFE53910000-0x00007FFE543D1000-memory.dmp

Filesize
10.8MB

Download
memory/1212-0-0x0000000000420000-0x0000000000592000-memory.dmp

Filesize
1.4MB

Download
memory/4764-54-0x00000000002A0000-0x000000000064C000-memory.dmp

Filesize
3.7MB

Download
memory/4764-57-0x0000000005880000-0x0000000005890000-memory.dmp

Filesize
64KB

Download
memory/4764-58-0x00000000061F0000-0x0000000006282000-memory.dmp

Filesize
584KB

Download
memory/4764-56-0x00000000002A0000-0x000000000064C000-memory.dmp

Filesize
3.7MB

Download
memory/4764-91-0x0000000006C40000-0x00000000071E4000-memory.dmp

Filesize
5.6MB

Download
memory/4764-55-0x00000000744D0000-0x0000000074C80000-memory.dmp

Filesize
7.7MB

Download
memory/4764-53-0x00000000002A0000-0x000000000064C000-memory.dmp

Filesize
3.7MB

Download
memory/4764-185-0x0000000006BD0000-0x0000000006C36000-memory.dmp

Filesize
408KB

Download
memory/4764-189-0x00000000002A0000-0x000000000064C000-memory.dmp

Filesize
3.7MB

Download
memory/4764-190-0x00000000744D0000-0x0000000074C80000-memory.dmp

Filesize
7.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads