6bff6b3c3ded24cc576c17581ead1cf5c50e7e3640464fbd9d8eabf686165f63

Analysis

max time kernel
121s
max time network
136s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
05/01/2024, 13:53

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General

Target

43da5426b9f3786bf7846e6a70b76e7b.exe
Size

142KB
MD5

43da5426b9f3786bf7846e6a70b76e7b
SHA1

e515c1c3182c8be33532d5ed0249bf684ca3fc83
SHA256

6bff6b3c3ded24cc576c17581ead1cf5c50e7e3640464fbd9d8eabf686165f63
SHA512

10d93de0dacc163c69c1fbb752202d4d22cf0adf76d315c99328a3f27ede1062b24de119ad7f04a680acacd9e24e6aa706688b4bdd8216205524f3480427ad0c
SSDEEP

3072:CnOn7t7XpdpCCTg/sxFgJaeqgKJ+BCZC2LPR86CKZTVFNF9o0Y3k3:CKpdcCrTdgKoy8FWTVF3Y3k

Score

7^/10

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2396	downloadmr.exe

Loads dropped DLL 4 IoCs

pid	Process
2768	43da5426b9f3786bf7846e6a70b76e7b.exe
2768	43da5426b9f3786bf7846e6a70b76e7b.exe
2768	43da5426b9f3786bf7846e6a70b76e7b.exe
2768	43da5426b9f3786bf7846e6a70b76e7b.exe

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

System Information Discovery
T1082

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2396	downloadmr.exe
2396	downloadmr.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2768 wrote to memory of 2396	2768	43da5426b9f3786bf7846e6a70b76e7b.exe	27
PID 2768 wrote to memory of 2396	2768	43da5426b9f3786bf7846e6a70b76e7b.exe	27
PID 2768 wrote to memory of 2396	2768	43da5426b9f3786bf7846e6a70b76e7b.exe	27
PID 2768 wrote to memory of 2396	2768	43da5426b9f3786bf7846e6a70b76e7b.exe	27

C:\Users\Admin\AppData\Local\Temp\43da5426b9f3786bf7846e6a70b76e7b.exe
"C:\Users\Admin\AppData\Local\Temp\43da5426b9f3786bf7846e6a70b76e7b.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2768
- C:\Users\Admin\AppData\Local\Temp\nstCAEF.tmp\downloadmr.exe
  C:\Users\Admin\AppData\Local\Temp\nstCAEF.tmp\downloadmr.exe /u4dc9054e-38b0-4614-bdd5-20605bc06f26 /e52251
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetWindowsHookEx
  PID:2396

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

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\nstCAEF.tmp\System.dll

Filesize
21KB

MD5
5ebc73650256e9c8ddbcda231db829a1

SHA1
988d4535e18754ab2a6248abae96c5697d7dbcd5

SHA256
1eaa543842df7795404184e8892a1654b0773dbc9bd8b54c7fdb9e68f4355493

SHA512
b21266e76fc7263af982a1336a766e47ccf348ed56b305dbb09f03574c9b2a7309f12200e80d86f9a251381be6e87a41206447f11c51899cb31fba10da1d5270

Download Submit
\Users\Admin\AppData\Local\Temp\nstCAEF.tmp\downloadmr.exe

Filesize
122KB

MD5
da254a8488b60244654e1cf4d6796cf8

SHA1
23d06f4589786652a3a226b5012a5520a3d03452

SHA256
6d3b82a7ad74a1e88ae4d0f9176082130f1558fb3ff42a8b45ca8b80445efc2d

SHA512
d311f90ad65441f6c7ae55220c2c3f117aa7601d083e6847e1b58b96c3c332d68a25d445310818396dc88678fb9ec5356f35a04a392c3d23746a2231e14b0a2e

Download Submit
memory/2396-27-0x0000000002100000-0x0000000002140000-memory.dmp

Filesize
256KB

Download
memory/2396-19-0x0000000074480000-0x0000000074A2B000-memory.dmp

Filesize
5.7MB

Download
memory/2396-20-0x0000000002100000-0x0000000002140000-memory.dmp

Filesize
256KB

Download
memory/2396-23-0x0000000074480000-0x0000000074A2B000-memory.dmp

Filesize
5.7MB

Download
memory/2396-26-0x0000000074480000-0x0000000074A2B000-memory.dmp

Filesize
5.7MB

Download
memory/2396-18-0x0000000074480000-0x0000000074A2B000-memory.dmp

Filesize
5.7MB

Download
memory/2396-28-0x0000000002100000-0x0000000002140000-memory.dmp

Filesize
256KB

Download
memory/2396-29-0x0000000002100000-0x0000000002140000-memory.dmp

Filesize
256KB

Download
memory/2396-30-0x0000000005AF0000-0x0000000005BF0000-memory.dmp

Filesize
1024KB

Download
memory/2396-31-0x0000000074480000-0x0000000074A2B000-memory.dmp

Filesize
5.7MB

Download
memory/2768-21-0x0000000000400000-0x000000000043F000-memory.dmp

Filesize
252KB

Download
memory/2768-22-0x000000006E3C0000-0x000000006E3CD000-memory.dmp

Filesize
52KB

Download
memory/2768-35-0x0000000000400000-0x000000000043F000-memory.dmp

Filesize
252KB

Download