20377d2626f676a651c526d6e9808bdea9e4ac20f426e5f9b297b90f984781b6

Analysis

max time kernel
147s
max time network
156s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
03-04-2024 07:02

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General

Target

20377d2626f676a651c526d6e9808bdea9e4ac20f426e5f9b297b90f984781b6.exe
Size

197KB
MD5

3d48daf09cb0deba593f8e31433653fb
SHA1

d4c261deebb1b4246287e6a754cd1118b53d4886
SHA256

20377d2626f676a651c526d6e9808bdea9e4ac20f426e5f9b297b90f984781b6
SHA512

865a75bcbf9f18c4b1ee6e7445a91aa468831cd70b52fdc99c989c38535c882091d0b11e44d99d8a576030aa133d96549db79730308b1fa5235cceff016400e1
SSDEEP

6144:rBs27MMLyX5HXXXDTXXXOGqIII+pXXX5AYjKXXXDoXXXG6XXXxXXXLIIIEAkOCOg:rK20HXXX/XXXFqIIIcXXX5j2XXXcXXXp

Score

7^/10

Malware Config

Signatures

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

Processes:

20377d2626f676a651c526d6e9808bdea9e4ac20f426e5f9b297b90f984781b6.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation	20377d2626f676a651c526d6e9808bdea9e4ac20f426e5f9b297b90f984781b6.exe

Executes dropped EXE 1 IoCs

Processes:

jmahost.exe

pid process

1944 jmahost.exe

pid	process
1944	jmahost.exe

Drops file in Windows directory 2 IoCs

Processes:

20377d2626f676a651c526d6e9808bdea9e4ac20f426e5f9b297b90f984781b6.exe

description	ioc	process
File created	C:\Windows\Debug\jmahost.exe	20377d2626f676a651c526d6e9808bdea9e4ac20f426e5f9b297b90f984781b6.exe
File opened for modification	C:\Windows\Debug\jmahost.exe	20377d2626f676a651c526d6e9808bdea9e4ac20f426e5f9b297b90f984781b6.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

Processes:

jmahost.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	jmahost.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	jmahost.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

20377d2626f676a651c526d6e9808bdea9e4ac20f426e5f9b297b90f984781b6.exe

description pid process

Token: SeIncBasePriorityPrivilege 1668 20377d2626f676a651c526d6e9808bdea9e4ac20f426e5f9b297b90f984781b6.exe

description	pid	process
Token: SeIncBasePriorityPrivilege	1668	20377d2626f676a651c526d6e9808bdea9e4ac20f426e5f9b297b90f984781b6.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

20377d2626f676a651c526d6e9808bdea9e4ac20f426e5f9b297b90f984781b6.exe

description	pid	process	target process
PID 1668 wrote to memory of 900	1668	20377d2626f676a651c526d6e9808bdea9e4ac20f426e5f9b297b90f984781b6.exe	cmd.exe
PID 1668 wrote to memory of 900	1668	20377d2626f676a651c526d6e9808bdea9e4ac20f426e5f9b297b90f984781b6.exe	cmd.exe
PID 1668 wrote to memory of 900	1668	20377d2626f676a651c526d6e9808bdea9e4ac20f426e5f9b297b90f984781b6.exe	cmd.exe

C:\Users\Admin\AppData\Local\Temp\20377d2626f676a651c526d6e9808bdea9e4ac20f426e5f9b297b90f984781b6.exe
"C:\Users\Admin\AppData\Local\Temp\20377d2626f676a651c526d6e9808bdea9e4ac20f426e5f9b297b90f984781b6.exe"
1⤵
- Checks computer location settings
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1668

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\system32\cmd.exe" /c del C:\Users\Admin\AppData\Local\Temp\20377D~1.EXE > nul
2⤵
PID:900

C:\Windows\Debug\jmahost.exe
C:\Windows\Debug\jmahost.exe
1⤵
- Executes dropped EXE
- Checks processor information in registry
PID:1944

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=4148 --field-trial-handle=2280,i,11703952675008463361,17436195144517971517,262144 --variations-seed-version /prefetch:8
1⤵
PID:4340

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

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Downloads

C:\Windows\debug\jmahost.exe

Filesize
197KB

MD5
a0ffa3dcbbaee12b1ba0d47ab79d0b94

SHA1
6782197495e07db2f1ffa28f6845c5c39b2dcf77

SHA256
c86024b78ee43ed38420c648f7acbfceb96d4a6008663600428981676ab9b7ba

SHA512
595cc868e47791bdd6881a508604fa3d99ee367d6b0b5400bd52219bfc3683f65156adbe236929f8a3a24523de4dc222fcabf23cf06720c450348236cab86354

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