c83ef7dd37d4783df1835cc10be8e9019c97ff778b894f8b829768b0d441451f

Analysis

max time kernel
150s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20240412-en
resource tags

arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
submitted
17-04-2024 04:12

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General

Target

c83ef7dd37d4783df1835cc10be8e9019c97ff778b894f8b829768b0d441451f.exe
Size

22KB
MD5

67ccf7321c8f0c2faa67f9358ce83087
SHA1

ad03d97607de08b3d8b29a377904ad056d9250f6
SHA256

c83ef7dd37d4783df1835cc10be8e9019c97ff778b894f8b829768b0d441451f
SHA512

a1fc1b4ed96225ec05f3175e46d8d1416492122792864f4716fd1097007b5e045c984b80ced3011daf139e37a9660f4e4d011788025746905bcd647c3f5b691f
SSDEEP

384:aGpN5/SfmVoonJWpSu+Ip7JLyaBOEj63eVi06MCLGuWf:fhZSoEpnp7JLyWWElhCSu2

Score

9^/10

upx

Malware Config

Signatures

UPX dump on OEP (original entry point) 2 IoCs

resource	yara_rule
behavioral2/memory/392-0-0x0000000000400000-0x000000000040F000-memory.dmp	UPX
behavioral2/files/0x0008000000023407-13.dat	UPX

Checks computer location settings 2 TTPs 1 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-1-5-21-776854024-226333264-2052258302-1000\Control Panel\International\Geo\Nation	c83ef7dd37d4783df1835cc10be8e9019c97ff778b894f8b829768b0d441451f.exe

Executes dropped EXE 1 IoCs

pid	Process
4684	hhcbrnaff.exe

UPX packed file 2 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/memory/392-0-0x0000000000400000-0x000000000040F000-memory.dmp	upx
behavioral2/files/0x0008000000023407-13.dat	upx

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

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 392 wrote to memory of 4684	392	c83ef7dd37d4783df1835cc10be8e9019c97ff778b894f8b829768b0d441451f.exe	86
PID 392 wrote to memory of 4684	392	c83ef7dd37d4783df1835cc10be8e9019c97ff778b894f8b829768b0d441451f.exe	86
PID 392 wrote to memory of 4684	392	c83ef7dd37d4783df1835cc10be8e9019c97ff778b894f8b829768b0d441451f.exe	86

C:\Users\Admin\AppData\Local\Temp\c83ef7dd37d4783df1835cc10be8e9019c97ff778b894f8b829768b0d441451f.exe
"C:\Users\Admin\AppData\Local\Temp\c83ef7dd37d4783df1835cc10be8e9019c97ff778b894f8b829768b0d441451f.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:392
- C:\Users\Admin\AppData\Local\Temp\hhcbrnaff.exe
  "C:\Users\Admin\AppData\Local\Temp\hhcbrnaff.exe"
  2⤵
  - Executes dropped EXE
  PID:4684

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\hhcbrnaff.exe

Filesize
22KB

MD5
3396290e9fbf5f39deb8de715649f9f5

SHA1
2ac35317271eb9cdf686b17a7a0d72b4b0517d82

SHA256
b0de952fb2b7cdd0c6ab895f33fa24dfa2a9b80e98a7698626a78010a892d167

SHA512
9a99e3894b2bb49547cf10c155ae30e5c1e8d5aa143846cb1cb0afb6a75afcdb4ebdeedae0e10b835ab58dc96f629696f7aba05b264cf34ae6ae5b2847f0f30e

Download Submit
memory/392-0-0x0000000000400000-0x000000000040F000-memory.dmp

Filesize
60KB

Download
memory/392-1-0x00000000005A0000-0x00000000005A7000-memory.dmp

Filesize
28KB

Download
memory/392-2-0x00000000005A0000-0x00000000005A7000-memory.dmp

Filesize
28KB

Download
memory/392-3-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download