e19411b76e85354c5d53a959772efca2ed0315a6e7f74c4bd421edc03022d623

Analysis

max time kernel
124s
max time network
146s
platform
windows10-2004_x64
resource
win10v2004-20221111-en
resource tags

arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
submitted
06/01/2023, 07:21

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General

Target

611a9e4c291ecd531c6f8f19afc436ea303f5f08.exe
Size

441KB
MD5

6d906bd5d8a13d4f606a3b97fae99ad8
SHA1

611a9e4c291ecd531c6f8f19afc436ea303f5f08
SHA256

e19411b76e85354c5d53a959772efca2ed0315a6e7f74c4bd421edc03022d623
SHA512

eb35fccd3facb2b88c6d0600ae9f2ed188909b63b83f3800d63c37cbb05d596bc8582dc9f691532b3e79102088dcfcf06eb3026e90ecc40c6b29d31857f164ba
SSDEEP

6144:B5aWbksiNTBTSJfzmTFZjI+wCtNNHxfLf0Gq0eMmv+bYR8Byaewr8z5PEtmprDWE:B5atNTFSJfzmTLTxxfo0eMqJut5CeE

Score

8^/10

upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
4240	extd.exe

UPX packed file 3 IoCs

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

upx

resource	yara_rule
behavioral2/files/0x000600000002318d-135.dat	upx
behavioral2/files/0x000600000002318d-136.dat	upx
behavioral2/memory/4240-137-0x0000000000400000-0x00000000004A5000-memory.dmp	upx

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 2712 wrote to memory of 440	2712	611a9e4c291ecd531c6f8f19afc436ea303f5f08.exe	80
PID 2712 wrote to memory of 440	2712	611a9e4c291ecd531c6f8f19afc436ea303f5f08.exe	80
PID 440 wrote to memory of 4240	440	cmd.exe	81
PID 440 wrote to memory of 4240	440	cmd.exe	81
PID 440 wrote to memory of 4240	440	cmd.exe	81
PID 440 wrote to memory of 4740	440	cmd.exe	82
PID 440 wrote to memory of 4740	440	cmd.exe	82
PID 440 wrote to memory of 1408	440	cmd.exe	84
PID 440 wrote to memory of 1408	440	cmd.exe	84
PID 440 wrote to memory of 1284	440	cmd.exe	86
PID 440 wrote to memory of 1284	440	cmd.exe	86
PID 440 wrote to memory of 4644	440	cmd.exe	88
PID 440 wrote to memory of 4644	440	cmd.exe	88
PID 440 wrote to memory of 1752	440	cmd.exe	89
PID 440 wrote to memory of 1752	440	cmd.exe	89

Views/modifies file attributes 1 TTPs 2 IoCs

evasion

Hidden Files and Directories

T1158

pid	Process
4644	attrib.exe
1752	attrib.exe

C:\Users\Admin\AppData\Local\Temp\611a9e4c291ecd531c6f8f19afc436ea303f5f08.exe
"C:\Users\Admin\AppData\Local\Temp\611a9e4c291ecd531c6f8f19afc436ea303f5f08.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:2712
- C:\Windows\system32\cmd.exe
  "C:\Windows\sysnative\cmd" /c "C:\Users\Admin\AppData\Local\Temp\667F.tmp\6680.tmp\6681.bat C:\Users\Admin\AppData\Local\Temp\611a9e4c291ecd531c6f8f19afc436ea303f5f08.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:440
- - C:\Users\Admin\AppData\Local\Temp\667F.tmp\6680.tmp\extd.exe
    C:\Users\Admin\AppData\Local\Temp\667F.tmp\6680.tmp\extd.exe "/hideself" "" "" "" "" "" "" "" ""
    3⤵
    - Executes dropped EXE
    PID:4240
- - C:\Windows\system32\reg.exe
    reg delete HKCR/.exe
    3⤵
    PID:4740
- - C:\Windows\system32\reg.exe
    reg delete HKCR/.dll
    3⤵
    PID:1408
- - C:\Windows\system32\reg.exe
    reg delete HKCR/*
    3⤵
    PID:1284
- - C:\Windows\system32\attrib.exe
    attrib -r -s -h c:bootmgr
    3⤵
    - Views/modifies file attributes
    PID:4644
- - C:\Windows\system32\attrib.exe
    attrib -r -s -h c:bootmgr.sys
    3⤵
    - Views/modifies file attributes
    PID:1752

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Hidden Files and Directories

T1158

Privilege Escalation

Defense Evasion

Hidden Files and Directories

T1158

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\667F.tmp\6680.tmp\6681.bat

Filesize
45KB

MD5
8a2a2b907c72a50e742a96f2beb67ac4

SHA1
fdb5eb45b3348188dc7552a23558c45e43833fd7

SHA256
c3abfae5a3d0e4ddf22299e42dc62b0ada0377c9e00f79bd30d92a6846f65bef

SHA512
f9c22a7c800d9f1f0f47fbc800f9d15b46c426a9deb933c0f9ac6e130135486eae738c2e9ede2affc8b8ec40d7f887f0c017830bd6dcff8bd8b223d1bab777f0

Download Submit
C:\Users\Admin\AppData\Local\Temp\667F.tmp\6680.tmp\extd.exe

Filesize
259KB

MD5
139b5ce627bc9ec1040a91ebe7830f7c

SHA1
c7e8154ebed98bea9d1f12b08139d130b6836826

SHA256
d4b9b8b1f9ab2fbca7b55c4068bdcefae50ad3994924d67607fc9ae859003332

SHA512
8cc0e484ddb2e8bed4b8554e65ab8e3bfbe2a8f1c554a7aec9eac4c9555396e21c4bc2840d499ce4baffed2a4966a7d742c7c3ada58d039630b03472e322042b

Download Submit
C:\Users\Admin\AppData\Local\Temp\667F.tmp\6680.tmp\extd.exe

Filesize
259KB

MD5
139b5ce627bc9ec1040a91ebe7830f7c

SHA1
c7e8154ebed98bea9d1f12b08139d130b6836826

SHA256
d4b9b8b1f9ab2fbca7b55c4068bdcefae50ad3994924d67607fc9ae859003332

SHA512
8cc0e484ddb2e8bed4b8554e65ab8e3bfbe2a8f1c554a7aec9eac4c9555396e21c4bc2840d499ce4baffed2a4966a7d742c7c3ada58d039630b03472e322042b

Download Submit
memory/4240-137-0x0000000000400000-0x00000000004A5000-memory.dmp

Filesize
660KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads