hxxp://mailto[:]contacto@gerenciamexico[.]com/?subject=FOLLETO-SUBCONTRATACI%C3%93N%2B%20Nombre%20%2B%20Tel

Analysis

max time kernel
147s
max time network
150s
platform
windows11-21h2_x64
resource
win11-20240508-en
resource tags

arch:x64arch:x86image:win11-20240508-enlocale:en-usos:windows11-21h2-x64system
submitted
22-05-2024 02:05

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General

Target

http://mailto:[email protected]/?subject=FOLLETO-SUBCONTRATACI%C3%93N%2B%20Nombre%20%2B%20Tel

Score

1^/10

Malware Config

Signatures

Checks processor information in registry 2 TTPs 6 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

Processes:

firefox.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	firefox.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Update Signature	firefox.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Update Revision	firefox.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier	firefox.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~Mhz	firefox.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	firefox.exe

Modifies registry class 1 IoCs

Processes:

firefox.exe

description ioc process

Key created \REGISTRY\USER\S-1-5-21-3433428765-2473475212-4279855560-1000_Classes\Local Settings firefox.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-3433428765-2473475212-4279855560-1000_Classes\Local Settings	firefox.exe

Suspicious use of AdjustPrivilegeToken 5 IoCs

Processes:

firefox.exe

description	pid	process
Token: SeDebugPrivilege	2364	firefox.exe
Token: SeDebugPrivilege	2364	firefox.exe
Token: SeDebugPrivilege	2364	firefox.exe
Token: SeDebugPrivilege	2364	firefox.exe
Token: SeDebugPrivilege	2364	firefox.exe

Suspicious use of FindShellTrayWindow 4 IoCs

Processes:

firefox.exe

pid process

2364 firefox.exe
2364 firefox.exe
2364 firefox.exe
2364 firefox.exe
Suspicious use of SendNotifyMessage 3 IoCs

Processes:

firefox.exe

pid process

2364 firefox.exe
2364 firefox.exe
2364 firefox.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

firefox.exe

pid process

2364 firefox.exe

pid	process
2364	firefox.exe
2364	firefox.exe
2364	firefox.exe
2364	firefox.exe

pid	process
2364	firefox.exe
2364	firefox.exe
2364	firefox.exe

pid	process
2364	firefox.exe

Suspicious use of WriteProcessMemory 64 IoCs

Processes:

firefox.exefirefox.exe

description	pid	process	target process
PID 4556 wrote to memory of 2364	4556	firefox.exe	firefox.exe
PID 4556 wrote to memory of 2364	4556	firefox.exe	firefox.exe
PID 4556 wrote to memory of 2364	4556	firefox.exe	firefox.exe
PID 4556 wrote to memory of 2364	4556	firefox.exe	firefox.exe
PID 4556 wrote to memory of 2364	4556	firefox.exe	firefox.exe
PID 4556 wrote to memory of 2364	4556	firefox.exe	firefox.exe
PID 4556 wrote to memory of 2364	4556	firefox.exe	firefox.exe
PID 4556 wrote to memory of 2364	4556	firefox.exe	firefox.exe
PID 4556 wrote to memory of 2364	4556	firefox.exe	firefox.exe
PID 4556 wrote to memory of 2364	4556	firefox.exe	firefox.exe
PID 4556 wrote to memory of 2364	4556	firefox.exe	firefox.exe
PID 2364 wrote to memory of 2548	2364	firefox.exe	firefox.exe
PID 2364 wrote to memory of 2548	2364	firefox.exe	firefox.exe
PID 2364 wrote to memory of 2548	2364	firefox.exe	firefox.exe
PID 2364 wrote to memory of 2548	2364	firefox.exe	firefox.exe
PID 2364 wrote to memory of 2548	2364	firefox.exe	firefox.exe
PID 2364 wrote to memory of 2548	2364	firefox.exe	firefox.exe
PID 2364 wrote to memory of 2548	2364	firefox.exe	firefox.exe
PID 2364 wrote to memory of 2548	2364	firefox.exe	firefox.exe
PID 2364 wrote to memory of 2548	2364	firefox.exe	firefox.exe
PID 2364 wrote to memory of 2548	2364	firefox.exe	firefox.exe
PID 2364 wrote to memory of 2548	2364	firefox.exe	firefox.exe
PID 2364 wrote to memory of 2548	2364	firefox.exe	firefox.exe
PID 2364 wrote to memory of 2548	2364	firefox.exe	firefox.exe
PID 2364 wrote to memory of 2548	2364	firefox.exe	firefox.exe
PID 2364 wrote to memory of 2548	2364	firefox.exe	firefox.exe
PID 2364 wrote to memory of 2548	2364	firefox.exe	firefox.exe
PID 2364 wrote to memory of 2548	2364	firefox.exe	firefox.exe
PID 2364 wrote to memory of 2548	2364	firefox.exe	firefox.exe
PID 2364 wrote to memory of 2548	2364	firefox.exe	firefox.exe
PID 2364 wrote to memory of 2548	2364	firefox.exe	firefox.exe
PID 2364 wrote to memory of 2548	2364	firefox.exe	firefox.exe
PID 2364 wrote to memory of 2548	2364	firefox.exe	firefox.exe
PID 2364 wrote to memory of 2548	2364	firefox.exe	firefox.exe
PID 2364 wrote to memory of 2548	2364	firefox.exe	firefox.exe
PID 2364 wrote to memory of 2548	2364	firefox.exe	firefox.exe
PID 2364 wrote to memory of 2548	2364	firefox.exe	firefox.exe
PID 2364 wrote to memory of 2548	2364	firefox.exe	firefox.exe
PID 2364 wrote to memory of 2548	2364	firefox.exe	firefox.exe
PID 2364 wrote to memory of 2548	2364	firefox.exe	firefox.exe
PID 2364 wrote to memory of 2548	2364	firefox.exe	firefox.exe
PID 2364 wrote to memory of 2548	2364	firefox.exe	firefox.exe
PID 2364 wrote to memory of 2548	2364	firefox.exe	firefox.exe
PID 2364 wrote to memory of 2548	2364	firefox.exe	firefox.exe
PID 2364 wrote to memory of 2548	2364	firefox.exe	firefox.exe
PID 2364 wrote to memory of 2548	2364	firefox.exe	firefox.exe
PID 2364 wrote to memory of 2548	2364	firefox.exe	firefox.exe
PID 2364 wrote to memory of 2548	2364	firefox.exe	firefox.exe
PID 2364 wrote to memory of 2548	2364	firefox.exe	firefox.exe
PID 2364 wrote to memory of 2548	2364	firefox.exe	firefox.exe
PID 2364 wrote to memory of 2548	2364	firefox.exe	firefox.exe
PID 2364 wrote to memory of 2548	2364	firefox.exe	firefox.exe
PID 2364 wrote to memory of 2548	2364	firefox.exe	firefox.exe
PID 2364 wrote to memory of 2548	2364	firefox.exe	firefox.exe
PID 2364 wrote to memory of 5092	2364	firefox.exe	firefox.exe
PID 2364 wrote to memory of 5092	2364	firefox.exe	firefox.exe
PID 2364 wrote to memory of 5092	2364	firefox.exe	firefox.exe
PID 2364 wrote to memory of 5092	2364	firefox.exe	firefox.exe
PID 2364 wrote to memory of 5092	2364	firefox.exe	firefox.exe
PID 2364 wrote to memory of 5092	2364	firefox.exe	firefox.exe
PID 2364 wrote to memory of 5092	2364	firefox.exe	firefox.exe
PID 2364 wrote to memory of 5092	2364	firefox.exe	firefox.exe
PID 2364 wrote to memory of 5092	2364	firefox.exe	firefox.exe
PID 2364 wrote to memory of 5092	2364	firefox.exe	firefox.exe

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012

C:\Program Files\Mozilla Firefox\firefox.exe
"C:\Program Files\Mozilla Firefox\firefox.exe" -osint -url "http://mailto:[email protected]/?subject=FOLLETO-SUBCONTRATACI%C3%93N%2B%20Nombre%20%2B%20Tel"
1⤵
- Suspicious use of WriteProcessMemory
PID:4556

C:\Program Files\Mozilla Firefox\firefox.exe
"C:\Program Files\Mozilla Firefox\firefox.exe" -osint -url http://mailto:[email protected]/?subject=FOLLETO-SUBCONTRATACI%C3%93N%2B%20Nombre%20%2B%20Tel
2⤵
- Checks processor information in registry
- Modifies registry class
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2364

C:\Program Files\Mozilla Firefox\firefox.exe
"C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel="2364.0.669608870\1463152187" -parentBuildID 20230214051806 -prefsHandle 1800 -prefMapHandle 1792 -prefsLen 22074 -prefMapSize 235121 -appDir "C:\Program Files\Mozilla Firefox\browser" - {04430049-353a-456d-b929-a589204bcc7f} 2364 "\\.\pipe\gecko-crash-server-pipe.2364" 1880 1f912104d58 gpu
3⤵
PID:2548

C:\Program Files\Mozilla Firefox\firefox.exe
"C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel="2364.1.1850299432\127116076" -parentBuildID 20230214051806 -prefsHandle 2412 -prefMapHandle 2408 -prefsLen 22925 -prefMapSize 235121 -win32kLockedDown -appDir "C:\Program Files\Mozilla Firefox\browser" - {6e249d4b-a762-4a6f-b36f-f5e6b8e5a72a} 2364 "\\.\pipe\gecko-crash-server-pipe.2364" 2424 1f90538c258 socket
3⤵
PID:5092

C:\Program Files\Mozilla Firefox\firefox.exe
"C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel="2364.2.1402326310\678319399" -childID 1 -isForBrowser -prefsHandle 2996 -prefMapHandle 3004 -prefsLen 22963 -prefMapSize 235121 -jsInitHandle 1360 -jsInitLen 246560 -a11yResourceId 64 -parentBuildID 20230214051806 -win32kLockedDown -appDir "C:\Program Files\Mozilla Firefox\browser" - {27096f33-1d4a-40d0-8bf9-0eeed732349c} 2364 "\\.\pipe\gecko-crash-server-pipe.2364" 2984 1f91503c158 tab
3⤵
PID:4624

C:\Program Files\Mozilla Firefox\firefox.exe
"C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel="2364.3.987253755\383472374" -childID 2 -isForBrowser -prefsHandle 3920 -prefMapHandle 3916 -prefsLen 27614 -prefMapSize 235121 -jsInitHandle 1360 -jsInitLen 246560 -a11yResourceId 64 -parentBuildID 20230214051806 -win32kLockedDown -appDir "C:\Program Files\Mozilla Firefox\browser" - {7b2546ea-e5a0-4ae7-84f3-3e925df52f39} 2364 "\\.\pipe\gecko-crash-server-pipe.2364" 3932 1f918138658 tab
3⤵
PID:1576

C:\Program Files\Mozilla Firefox\firefox.exe
"C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel="2364.4.957250450\1607603360" -childID 3 -isForBrowser -prefsHandle 5160 -prefMapHandle 5156 -prefsLen 27614 -prefMapSize 235121 -jsInitHandle 1360 -jsInitLen 246560 -a11yResourceId 64 -parentBuildID 20230214051806 -win32kLockedDown -appDir "C:\Program Files\Mozilla Firefox\browser" - {8bb3127d-e46a-4e25-a14f-5f9630488623} 2364 "\\.\pipe\gecko-crash-server-pipe.2364" 5172 1f91ad6e358 tab
3⤵
PID:4988

C:\Program Files\Mozilla Firefox\firefox.exe
"C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel="2364.5.63088875\1367585230" -childID 4 -isForBrowser -prefsHandle 5392 -prefMapHandle 5388 -prefsLen 27614 -prefMapSize 235121 -jsInitHandle 1360 -jsInitLen 246560 -a11yResourceId 64 -parentBuildID 20230214051806 -win32kLockedDown -appDir "C:\Program Files\Mozilla Firefox\browser" - {c109da74-5302-4389-91dc-a1e056f124bd} 2364 "\\.\pipe\gecko-crash-server-pipe.2364" 5400 1f91ada1b58 tab
3⤵
PID:1584

C:\Program Files\Mozilla Firefox\firefox.exe
"C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel="2364.6.1978977511\1555078993" -childID 5 -isForBrowser -prefsHandle 5368 -prefMapHandle 5372 -prefsLen 27614 -prefMapSize 235121 -jsInitHandle 1360 -jsInitLen 246560 -a11yResourceId 64 -parentBuildID 20230214051806 -win32kLockedDown -appDir "C:\Program Files\Mozilla Firefox\browser" - {f540bf10-9f62-4488-bf6f-f46354855f3f} 2364 "\\.\pipe\gecko-crash-server-pipe.2364" 5516 1f91ada3658 tab
3⤵
PID:2444

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Mozilla\Firefox\Profiles\9w3t05jh.default-release\activity-stream.discovery_stream.json.tmp
Filesize
23KB

MD5
6d665de95bb00d42ec65ea2e2865862a

SHA1
2ca1552f8c66024cded35ff253060520b6b5b098

SHA256
1183a970348c1c142b1ca4f9ae2fe90ed5bdc5fcccf51196e7b948bf72df14cb

SHA512
df0061f2e81b00abd685280a1db1ef0df0f7c0e785db72ed88d2f9bcabc1ebf0faa5c28df38ba6926423e461bede280b68c285d7b6bf02c1293acdf9d4a5af90

Download Submit
C:\Users\Admin\AppData\Local\Mozilla\Firefox\Profiles\9w3t05jh.default-release\cache2\entries\F4EFE37A30D0F14C6AC03FF7949A51CBC2EBC649
Filesize
13KB

MD5
b5c723a9313a8b9bb15c9ea0204eea9d

SHA1
53ce308300d4350691e6a27c2264bf093c9e723d

SHA256
7fb48d5a4917c4e59c642486806283e2345af4488245c389d00685e9531bb8bb

SHA512
059e2cb5a95e2bc297a5bd69d6aab7c6a6a00fd30c806daa42ecfe766169abbfd9ebe6d44970a4bba903acb63fd1042feb469a77511bb42c99a11bf5be931a28

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpaddon
Filesize
442KB

MD5
85430baed3398695717b0263807cf97c

SHA1
fffbee923cea216f50fce5d54219a188a5100f41

SHA256
a9f4281f82b3579581c389e8583dc9f477c7fd0e20c9dfc91a2e611e21e3407e

SHA512
06511f1f6c6d44d076b3c593528c26a602348d9c41689dbf5ff716b671c3ca5756b12cb2e5869f836dedce27b1a5cfe79b93c707fd01f8e84b620923bb61b5f1

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpaddon-1
Filesize
8.0MB

MD5
a01c5ecd6108350ae23d2cddf0e77c17

SHA1
c6ac28a2cd979f1f9a75d56271821d5ff665e2b6

SHA256
345d44e3aa3e1967d186a43d732c8051235c43458169a5d7d371780a6475ee42

SHA512
b046dd1b26ec0b810ee441b7ad4dc135e3f1521a817b9f3db60a32976352e8f7e53920e1a77fc5b4130aac260d79deef7e823267b4414e9cc774d8bffca56a72

Download Submit
C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\9w3t05jh.default-release\gmp-gmpopenh264\1.8.1.2\gmpopenh264.dll
Filesize
997KB

MD5
fe3355639648c417e8307c6d051e3e37

SHA1
f54602d4b4778da21bc97c7238fc66aa68c8ee34

SHA256
1ed7877024be63a049da98733fd282c16bd620530a4fb580dacec3a78ace914e

SHA512
8f4030bb2464b98eccbea6f06eb186d7216932702d94f6b84c56419e9cf65a18309711ab342d1513bf85aed402bc3535a70db4395874828f0d35c278dd2eac9c

Download Submit
C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\9w3t05jh.default-release\gmp-gmpopenh264\1.8.1.2\gmpopenh264.info
Filesize
116B

MD5
3d33cdc0b3d281e67dd52e14435dd04f

SHA1
4db88689282fd4f9e9e6ab95fcbb23df6e6485db

SHA256
f526e9f98841d987606efeaff7f3e017ba9fd516c4be83890c7f9a093ea4c47b

SHA512
a4a96743332cc8ef0f86bc2e6122618bfc75ed46781dadbac9e580cd73df89e74738638a2cccb4caa4cbbf393d771d7f2c73f825737cdb247362450a0d4a4bc1

Download Submit
C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\9w3t05jh.default-release\gmp-widevinecdm\4.10.2557.0\LICENSE.txt
Filesize
479B

MD5
49ddb419d96dceb9069018535fb2e2fc

SHA1
62aa6fea895a8b68d468a015f6e6ab400d7a7ca6

SHA256
2af127b4e00f7303de8271996c0c681063e4dc7abdc7b2a8c3fe5932b9352539

SHA512
48386217dabf7556e381ab3f5924b123a0a525969ff98f91efb03b65477c94e48a15d9abcec116b54616d36ad52b6f1d7b8b84c49c204e1b9b43f26f2af92da2

Download Submit
C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\9w3t05jh.default-release\gmp-widevinecdm\4.10.2557.0\manifest.json
Filesize
372B

MD5
8be33af717bb1b67fbd61c3f4b807e9e

SHA1
7cf17656d174d951957ff36810e874a134dd49e0

SHA256
e92d3394635edfb987a7528e0ccd24360e07a299078df2a6967ca3aae22fa2dd

SHA512
6125f60418e25fee896bf59f5672945cd8f36f03665c721837bb50adf5b4dfef2dddbfcfc817555027dcfa90e1ef2a1e80af1219e8063629ea70263d2fc936a7

Download Submit
C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\9w3t05jh.default-release\gmp-widevinecdm\4.10.2557.0\widevinecdm.dll
Filesize
11.8MB

MD5
33bf7b0439480effb9fb212efce87b13

SHA1
cee50f2745edc6dc291887b6075ca64d716f495a

SHA256
8ee42d9258e20bbc5bfdfae61605429beb5421ffeaaa0d02b86d4978f4b4ac4e

SHA512
d329a1a1d98e302142f2776de8cc2cd45a465d77cb21c461bdf5ee58c68073a715519f449cb673977288fe18401a0abcce636c85abaec61a4a7a08a16c924275

Download Submit
C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\9w3t05jh.default-release\gmp-widevinecdm\4.10.2557.0\widevinecdm.dll.lib
Filesize
1KB

MD5
688bed3676d2104e7f17ae1cd2c59404

SHA1
952b2cdf783ac72fcb98338723e9afd38d47ad8e

SHA256
33899a3ebc22cb8ed8de7bd48c1c29486c0279b06d7ef98241c92aef4e3b9237

SHA512
7a0e3791f75c229af79dd302f7d0594279f664886fea228cfe78e24ef185ae63aba809aa1036feb3130066deadc8e78909c277f0a7ed1e3485df3cf2cd329776

Download Submit
C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\9w3t05jh.default-release\gmp-widevinecdm\4.10.2557.0\widevinecdm.dll.sig
Filesize
1KB

MD5
937326fead5fd401f6cca9118bd9ade9

SHA1
4526a57d4ae14ed29b37632c72aef3c408189d91

SHA256
68a03f075db104f84afdd8fca45a7e4bff7b55dc1a2a24272b3abe16d8759c81

SHA512
b232f6cf3f88adb346281167ac714c4c4c7aac15175087c336911946d12d63d3a3a458e06b298b41a7ec582ef09fe238da3a3166ff89c450117228f7485c22d2

Download Submit
C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\9w3t05jh.default-release\prefs-1.js
Filesize
8KB

MD5
6ca6c5ef7c0a2773d1e2e6a359940231

SHA1
50f41d95492b7dba8207f51da97521d77120890a

SHA256
bac52d07ae9745945c626364f764fe006a54924bd403110487574291a345c04d

SHA512
4b1df36df451d3bfb0f6bbfb735719152580b17cb2bdd6f5af1b95a6527d3759f49e5a5e7342623956a11f9e843eb588214d57a62635e72005a4143f95738d93

Download Submit
C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\9w3t05jh.default-release\prefs-1.js
Filesize
10KB

MD5
94bcf4ae55de8ddced94a6cbc5ec5970

SHA1
2f385423d4beca37f9bd83ddb13ad08a249698cb

SHA256
298a1e944a6ba471d00af021cfa27e2c1b5ad29cdf000652a0af8214ce998d66

SHA512
1b7d9d3d8c78e4ab411372643e174b0f751398c6f205884cfcb26631d35db533bad0e0ee91f162a177e888328d32ef62a801b407693ccf37cb880ee998abb7ed

Download Submit
C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\9w3t05jh.default-release\sessionstore-backups\recovery.jsonlz4
Filesize
1017B

MD5
ab88a14159c5594f07212bf0dfb20906

SHA1
db19b63b34f496db278269f112ed7ce7abc7b6b2

SHA256
8550446e2b2659d3e0b40a8cbcd3a419c745cbbfc85d4e979e1650f5c8324895

SHA512
850fe25cf9f59cc4082ce884cee9ef8bec070088f1923580be2ba01080b7c57aabdd551d2df97d3647db0298edcd69ad834401c230adef3e632e970b051b4c32

Download Submit