06035c50bb3e3f927f2b9921697438c9acead3722c70a6a35fd857f454ed7373

Resubmissions

17/01/2024, 20:15 UTC

240117-y1l9jaedg8 4

17/01/2024, 20:11 UTC

240117-yyplwadgfr 5

Analysis

max time kernel
119s
max time network
120s
platform
windows7_x64
resource
win7-20231129-en
resource tags

arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
submitted
17/01/2024, 20:15 UTC

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General

Target

Uninstall Y8 Browser.exe
Size

257KB
MD5

e64476b5d34a3723acc191a51bd0f503
SHA1

093d23691119215f29157fdbee4bf9cccb233b99
SHA256

a619b317df51984ad5cf6c173e7ca754ac17bc4cb2508d64be75d6ba7bb50afa
SHA512

14d7710dcb040dfd713a547b8b4cee151c969d02efe986cc71157bb553777d186f7e5c093960e8b3064758300fe5b7fa67776ec39e6386becc57b5bc6514ffd6
SSDEEP

6144:aw4JQ6xNQWiMXK2OWaSCw87gLxGJX5Si8Udgwaqj:T7W/z6h/7gVGx5SiWDqj

Score

4^/10

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
1296	Un_A.exe

Loads dropped DLL 7 IoCs

pid	Process
1712	Uninstall Y8 Browser.exe
1296	Un_A.exe
1296	Un_A.exe
1296	Un_A.exe
1296	Un_A.exe
1296	Un_A.exe
1296	Un_A.exe

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
1296	Un_A.exe
1296	Un_A.exe
1296	Un_A.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1712 wrote to memory of 1296	1712	Uninstall Y8 Browser.exe	28
PID 1712 wrote to memory of 1296	1712	Uninstall Y8 Browser.exe	28
PID 1712 wrote to memory of 1296	1712	Uninstall Y8 Browser.exe	28
PID 1712 wrote to memory of 1296	1712	Uninstall Y8 Browser.exe	28

C:\Users\Admin\AppData\Local\Temp\Uninstall Y8 Browser.exe
"C:\Users\Admin\AppData\Local\Temp\Uninstall Y8 Browser.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1712
- C:\Users\Admin\AppData\Local\Temp\~nsuA.tmp\Un_A.exe
  "C:\Users\Admin\AppData\Local\Temp\~nsuA.tmp\Un_A.exe" _?=C:\Users\Admin\AppData\Local\Temp\
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Suspicious behavior: EnumeratesProcesses
  PID:1296

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

\Users\Admin\AppData\Local\Temp\nso81D.tmp\StdUtils.dll

Filesize
101KB

MD5
33b4e69e7835e18b9437623367dd1787

SHA1
53afa03edaf931abdc2d828e5a2c89ad573d926c

SHA256
72d38ef115e71fc73dc5978987c583fc8c6b50ff12e4a5d30649a4d164a8b6ae

SHA512
ca890e785d1a0a7e0b4a748416fba417826ae66b46e600f407d4e795b444612a8b830f579f2cf5b6e051bea800604f34f8801cc3daf05c8d29ad05bcda454a77

Download Submit
\Users\Admin\AppData\Local\Temp\nso81D.tmp\System.dll

Filesize
11KB

MD5
75ed96254fbf894e42058062b4b4f0d1

SHA1
996503f1383b49021eb3427bc28d13b5bbd11977

SHA256
a632d74332b3f08f834c732a103dafeb09a540823a2217ca7f49159755e8f1d7

SHA512
58174896db81d481947b8745dafe3a02c150f3938bb4543256e8cce1145154e016d481df9fe68dac6d48407c62cbe20753320ebd5fe5e84806d07ce78e0eb0c4

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\Users\Admin\AppData\Local\Temp\nso81D.tmp\WinShell.dll

Filesize
3KB

MD5
1cc7c37b7e0c8cd8bf04b6cc283e1e56

SHA1
0b9519763be6625bd5abce175dcc59c96d100d4c

SHA256
9be85b986ea66a6997dde658abe82b3147ed2a1a3dcb784bb5176f41d22815a6

SHA512
7acf7f8e68aa6066b59ca9f2ae2e67997e6b347bc08eb788d2a119b3295c844b5b9606757168e8d2fbd61c2cda367bf80e9e48c9a52c28d5a7a00464bfd2048f

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\Users\Admin\AppData\Local\Temp\nso81D.tmp\nsProcess.dll

Filesize
4KB

MD5
f0438a894f3a7e01a4aae8d1b5dd0289

SHA1
b058e3fcfb7b550041da16bf10d8837024c38bf6

SHA256
30c6c3dd3cc7fcea6e6081ce821adc7b2888542dae30bf00e881c0a105eb4d11

SHA512
f91fcea19cbddf8086affcb63fe599dc2b36351fc81ac144f58a80a524043ddeaa3943f36c86ebae45dd82e8faf622ea7b7c9b776e74c54b93df2963cfe66cc7

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\Users\Admin\AppData\Local\Temp\~nsuA.tmp\Un_A.exe

Filesize
257KB

MD5
e64476b5d34a3723acc191a51bd0f503

SHA1
093d23691119215f29157fdbee4bf9cccb233b99

SHA256
a619b317df51984ad5cf6c173e7ca754ac17bc4cb2508d64be75d6ba7bb50afa

SHA512
14d7710dcb040dfd713a547b8b4cee151c969d02efe986cc71157bb553777d186f7e5c093960e8b3064758300fe5b7fa67776ec39e6386becc57b5bc6514ffd6

Download Submit