7d1f45f2c66e84a2f97120fdb98634962e77e4241ce8504eccd0df874fe852ec

Analysis

max time kernel
120s
max time network
122s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
26-10-2024 18:12

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General

Target

Built.exe
Size

7.5MB
MD5

b93662ace7c4e48b341e69f2ef01fb0a
SHA1

181a6ec454f6d884be0be4cf6c0fa456809d5669
SHA256

7d1f45f2c66e84a2f97120fdb98634962e77e4241ce8504eccd0df874fe852ec
SHA512

f9e5cc90cd603c3e896fd506f4d709eb319132d0a413f906cc65defc7aad5d56a4043736121b6b359ff0eb4df7b71436a3d968953e378d8136e033ea66cbd657
SSDEEP

196608:LfgVVEJwfI9jUC2gYBYv3vbW2+iITx1U6nu:EVVE2IH2gYBgDWJTnzu

Score

7^/10

upx

Malware Config

Signatures

Loads dropped DLL 1 IoCs

pid	Process
2176	Built.exe

UPX packed file 2 IoCs

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

upx

resource	yara_rule
behavioral1/files/0x00050000000186e4-21.dat	upx
behavioral1/memory/2176-23-0x000007FEF5040000-0x000007FEF5705000-memory.dmp	upx

Checks processor information in registry 2 TTPs 9 IoCs

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

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~Mhz	firefox.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier	firefox.exe
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\~Mhz	firefox.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier	firefox.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	firefox.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\CurrentPatchLevel	firefox.exe

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-2872745919-2748461613-2989606286-1000_Classes\Local Settings	firefox.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2976	firefox.exe
Token: SeDebugPrivilege	2976	firefox.exe

Suspicious use of FindShellTrayWindow 4 IoCs

pid	Process
2976	firefox.exe
2976	firefox.exe
2976	firefox.exe
2976	firefox.exe

Suspicious use of SendNotifyMessage 3 IoCs

pid	Process
2976	firefox.exe
2976	firefox.exe
2976	firefox.exe

Suspicious use of WriteProcessMemory 64 IoCs

description	pid	Process	procid_target
PID 2648 wrote to memory of 2176	2648	Built.exe	30
PID 2648 wrote to memory of 2176	2648	Built.exe	30
PID 2648 wrote to memory of 2176	2648	Built.exe	30
PID 2152 wrote to memory of 2976	2152	firefox.exe	32
PID 2152 wrote to memory of 2976	2152	firefox.exe	32
PID 2152 wrote to memory of 2976	2152	firefox.exe	32
PID 2152 wrote to memory of 2976	2152	firefox.exe	32
PID 2152 wrote to memory of 2976	2152	firefox.exe	32
PID 2152 wrote to memory of 2976	2152	firefox.exe	32
PID 2152 wrote to memory of 2976	2152	firefox.exe	32
PID 2152 wrote to memory of 2976	2152	firefox.exe	32
PID 2152 wrote to memory of 2976	2152	firefox.exe	32
PID 2152 wrote to memory of 2976	2152	firefox.exe	32
PID 2152 wrote to memory of 2976	2152	firefox.exe	32
PID 2152 wrote to memory of 2976	2152	firefox.exe	32
PID 2976 wrote to memory of 2268	2976	firefox.exe	33
PID 2976 wrote to memory of 2268	2976	firefox.exe	33
PID 2976 wrote to memory of 2268	2976	firefox.exe	33
PID 2976 wrote to memory of 1768	2976	firefox.exe	34
PID 2976 wrote to memory of 1768	2976	firefox.exe	34
PID 2976 wrote to memory of 1768	2976	firefox.exe	34
PID 2976 wrote to memory of 1768	2976	firefox.exe	34
PID 2976 wrote to memory of 1768	2976	firefox.exe	34
PID 2976 wrote to memory of 1768	2976	firefox.exe	34
PID 2976 wrote to memory of 1768	2976	firefox.exe	34
PID 2976 wrote to memory of 1768	2976	firefox.exe	34
PID 2976 wrote to memory of 1768	2976	firefox.exe	34
PID 2976 wrote to memory of 1768	2976	firefox.exe	34
PID 2976 wrote to memory of 1768	2976	firefox.exe	34
PID 2976 wrote to memory of 1768	2976	firefox.exe	34
PID 2976 wrote to memory of 1768	2976	firefox.exe	34
PID 2976 wrote to memory of 1768	2976	firefox.exe	34
PID 2976 wrote to memory of 1768	2976	firefox.exe	34
PID 2976 wrote to memory of 1768	2976	firefox.exe	34
PID 2976 wrote to memory of 1768	2976	firefox.exe	34
PID 2976 wrote to memory of 1768	2976	firefox.exe	34
PID 2976 wrote to memory of 1768	2976	firefox.exe	34
PID 2976 wrote to memory of 1768	2976	firefox.exe	34
PID 2976 wrote to memory of 1768	2976	firefox.exe	34
PID 2976 wrote to memory of 1768	2976	firefox.exe	34
PID 2976 wrote to memory of 1768	2976	firefox.exe	34
PID 2976 wrote to memory of 1768	2976	firefox.exe	34
PID 2976 wrote to memory of 1768	2976	firefox.exe	34
PID 2976 wrote to memory of 1768	2976	firefox.exe	34
PID 2976 wrote to memory of 1768	2976	firefox.exe	34
PID 2976 wrote to memory of 1768	2976	firefox.exe	34
PID 2976 wrote to memory of 1768	2976	firefox.exe	34
PID 2976 wrote to memory of 1768	2976	firefox.exe	34
PID 2976 wrote to memory of 1768	2976	firefox.exe	34
PID 2976 wrote to memory of 1768	2976	firefox.exe	34
PID 2976 wrote to memory of 1768	2976	firefox.exe	34
PID 2976 wrote to memory of 1768	2976	firefox.exe	34
PID 2976 wrote to memory of 1768	2976	firefox.exe	34
PID 2976 wrote to memory of 1768	2976	firefox.exe	34
PID 2976 wrote to memory of 1768	2976	firefox.exe	34
PID 2976 wrote to memory of 1768	2976	firefox.exe	34
PID 2976 wrote to memory of 1768	2976	firefox.exe	34
PID 2976 wrote to memory of 1768	2976	firefox.exe	34
PID 2976 wrote to memory of 1768	2976	firefox.exe	34
PID 2976 wrote to memory of 1768	2976	firefox.exe	34
PID 2976 wrote to memory of 1768	2976	firefox.exe	34
PID 2976 wrote to memory of 1768	2976	firefox.exe	34
PID 2976 wrote to memory of 2248	2976	firefox.exe	35
PID 2976 wrote to memory of 2248	2976	firefox.exe	35

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:\Users\Admin\AppData\Local\Temp\Built.exe
"C:\Users\Admin\AppData\Local\Temp\Built.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:2648
- C:\Users\Admin\AppData\Local\Temp\Built.exe
  "C:\Users\Admin\AppData\Local\Temp\Built.exe"
  2⤵
  - Loads dropped DLL
  PID:2176

C:\Program Files\Mozilla Firefox\firefox.exe
"C:\Program Files\Mozilla Firefox\firefox.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:2152
- C:\Program Files\Mozilla Firefox\firefox.exe
  "C:\Program Files\Mozilla Firefox\firefox.exe"
  2⤵
  - Checks processor information in registry
  - Modifies registry class
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SendNotifyMessage
  - Suspicious use of WriteProcessMemory
  PID:2976
- - C:\Program Files\Mozilla Firefox\firefox.exe
    "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel="2976.0.1359676133\2065729099" -parentBuildID 20221007134813 -prefsHandle 1216 -prefMapHandle 1208 -prefsLen 20847 -prefMapSize 233444 -appDir "C:\Program Files\Mozilla Firefox\browser" - {e8d9b873-2242-456f-a49e-0ee91f52e5e7} 2976 "\\.\pipe\gecko-crash-server-pipe.2976" 1296 10ed8758 gpu
    3⤵
    PID:2268
- - C:\Program Files\Mozilla Firefox\firefox.exe
    "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel="2976.1.889000764\658810411" -parentBuildID 20221007134813 -prefsHandle 1472 -prefMapHandle 1468 -prefsLen 20928 -prefMapSize 233444 -appDir "C:\Program Files\Mozilla Firefox\browser" - {9bed99db-676b-443e-b10f-e69ec4228c7e} 2976 "\\.\pipe\gecko-crash-server-pipe.2976" 1484 d70458 socket
    3⤵
    - Checks processor information in registry
    PID:1768
- - C:\Program Files\Mozilla Firefox\firefox.exe
    "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel="2976.2.2122599061\270754191" -childID 1 -isForBrowser -prefsHandle 2116 -prefMapHandle 2112 -prefsLen 20966 -prefMapSize 233444 -jsInitHandle 804 -jsInitLen 246848 -a11yResourceId 64 -parentBuildID 20221007134813 -appDir "C:\Program Files\Mozilla Firefox\browser" - {53aa0a16-5324-4287-9fc1-e0c1d78ed2dd} 2976 "\\.\pipe\gecko-crash-server-pipe.2976" 2128 1a7a3b58 tab
    3⤵
    PID:2248
- - C:\Program Files\Mozilla Firefox\firefox.exe
    "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel="2976.3.1863537774\452322877" -childID 2 -isForBrowser -prefsHandle 2508 -prefMapHandle 2352 -prefsLen 26216 -prefMapSize 233444 -jsInitHandle 804 -jsInitLen 246848 -a11yResourceId 64 -parentBuildID 20221007134813 -appDir "C:\Program Files\Mozilla Firefox\browser" - {fb726b32-ee87-471a-9dc6-1e0599845073} 2976 "\\.\pipe\gecko-crash-server-pipe.2976" 2500 1b4f0e58 tab
    3⤵
    PID:1336
- - C:\Program Files\Mozilla Firefox\firefox.exe
    "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel="2976.4.811043835\2074465389" -childID 3 -isForBrowser -prefsHandle 2904 -prefMapHandle 2900 -prefsLen 26216 -prefMapSize 233444 -jsInitHandle 804 -jsInitLen 246848 -a11yResourceId 64 -parentBuildID 20221007134813 -appDir "C:\Program Files\Mozilla Firefox\browser" - {7e566bd8-7983-47bd-9978-68d4aac80529} 2976 "\\.\pipe\gecko-crash-server-pipe.2976" 2920 1c53c358 tab
    3⤵
    PID:924
- - C:\Program Files\Mozilla Firefox\firefox.exe
    "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel="2976.5.45883034\1028677954" -childID 4 -isForBrowser -prefsHandle 3760 -prefMapHandle 3612 -prefsLen 26275 -prefMapSize 233444 -jsInitHandle 804 -jsInitLen 246848 -a11yResourceId 64 -parentBuildID 20221007134813 -appDir "C:\Program Files\Mozilla Firefox\browser" - {e6b4d77b-52d2-442a-8500-1cb9ed249cb9} 2976 "\\.\pipe\gecko-crash-server-pipe.2976" 3780 1e80ce58 tab
    3⤵
    PID:1576
- - C:\Program Files\Mozilla Firefox\firefox.exe
    "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel="2976.6.731965033\986583798" -childID 5 -isForBrowser -prefsHandle 3900 -prefMapHandle 3904 -prefsLen 26275 -prefMapSize 233444 -jsInitHandle 804 -jsInitLen 246848 -a11yResourceId 64 -parentBuildID 20221007134813 -appDir "C:\Program Files\Mozilla Firefox\browser" - {21dc4807-ad62-4fff-8ccb-911c5d63d0d0} 2976 "\\.\pipe\gecko-crash-server-pipe.2976" 3888 1e81c558 tab
    3⤵
    PID:2960
- - C:\Program Files\Mozilla Firefox\firefox.exe
    "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel="2976.7.1264712343\1877451179" -childID 6 -isForBrowser -prefsHandle 3968 -prefMapHandle 3972 -prefsLen 26275 -prefMapSize 233444 -jsInitHandle 804 -jsInitLen 246848 -a11yResourceId 64 -parentBuildID 20221007134813 -appDir "C:\Program Files\Mozilla Firefox\browser" - {9e0351fd-0d9a-4e81-8531-ff40d581e344} 2976 "\\.\pipe\gecko-crash-server-pipe.2976" 3956 1e81dd58 tab
    3⤵
    PID:1828
- - C:\Program Files\Mozilla Firefox\firefox.exe
    "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel="2976.8.372196269\662310531" -childID 7 -isForBrowser -prefsHandle 1872 -prefMapHandle 1868 -prefsLen 26356 -prefMapSize 233444 -jsInitHandle 804 -jsInitLen 246848 -a11yResourceId 64 -parentBuildID 20221007134813 -appDir "C:\Program Files\Mozilla Firefox\browser" - {2bd32f5f-19c7-4374-b5d4-2191a1173775} 2976 "\\.\pipe\gecko-crash-server-pipe.2976" 2468 18362e58 tab
    3⤵
    PID:2708

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

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Mozilla\Firefox\Profiles\bs4a8d8y.default-release\activity-stream.discovery_stream.json.tmp

Filesize
32KB

MD5
b39e5023f209c52a5970731fb2331f0e

SHA1
d74b26c50299af71f033c7728e20f27add9b6228

SHA256
344b979d8b22773ac223e704c01b51a83b7e6fefd213292643bc8fda8b6c0b73

SHA512
3fc4b2c00e14bdeb48646f253bbc0b0f0928b2bdabab2b106c5711cdd36dbfe191a3874039673e4af328ada8fd636f0876a47945eebf294f8f44c4f85d7a6cbf

Download Submit
C:\Users\Admin\AppData\Local\Temp\_MEI26482\python312.dll

Filesize
1.7MB

MD5
6f7c42579f6c2b45fe866747127aef09

SHA1
b9487372fe3ed61022e52cc8dbd37e6640e87723

SHA256
07642b6a3d99ce88cff790087ac4e2ba0b2da1100cf1897f36e096427b580ee5

SHA512
aadf06fd6b4e14f600b0a614001b8c31e42d71801adec7c9c177dcbb4956e27617fa45ba477260a7e06d2ca4979ed5acc60311258427ee085e8025b61452acec

Download Submit
C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\bs4a8d8y.default-release\datareporting\glean\db\data.safe.bin

Filesize
2KB

MD5
b5264279e8e31ad7227b9047ad8ee422

SHA1
62e45e4f5cd3608394726d4e92d4be22fbf383d7

SHA256
36f7b0f66106ef377a8e1666170368b135ee3c555a2ad7f6a52120074e129e24

SHA512
9cc7e4f1be26d97d2aad8f0aea480ab6ee4a9ca3cf0760557387b203f199c31302ed7dcb7cad4d1da8c40a2ed4cf64e0439e70bb3360604a0a1c05426c0f6db1

Download Submit
C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\bs4a8d8y.default-release\datareporting\glean\pending_pings\15592001-ee11-4a0f-b09d-67a369d1267f

Filesize
745B

MD5
62274894865aafcb15b17b0db01d1a13

SHA1
a54ff0b1a0335ac8ff0086579b36876807cef1dd

SHA256
949b5c3407d3b3b604880611c08399897e2bf58b5f46d08a0ddd4048548b2d39

SHA512
39b0be577ab244cde020bf792294a2e4626cc5e7087378b26f7f45d4cca1aac1a7ef2d2dd41f09ce4f157e3ba8ecff89e23c867bf004a4b0f914c07e9e9ed035

Download Submit
C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\bs4a8d8y.default-release\datareporting\glean\pending_pings\1715e6b5-9f55-41e3-9771-61a545eca211

Filesize
12KB

MD5
bbed71ba511f6fa804daeb274eb8a422

SHA1
cbb47c15250248425aa9cbdaa8b9e3355b9724d8

SHA256
b9b9aeb5b8d770adff2737b3a4a61962afc8f38cc9d333e1a3aeecbccb3ca936

SHA512
7bf25381c89239a39796e0425c82a0df05e6a84108533dae11250a7275fe83eb00d9caf461377981eb505e757dc38f938082725530251b83e7c60504fcf7b92c

Download Submit
C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\bs4a8d8y.default-release\prefs-1.js

Filesize
6KB

MD5
dd6ce9f51d15bdc92064aae816808204

SHA1
9da15ca02d413b4b80b93e0e7b316c7f82e0b143

SHA256
18354ebd0be275d1eba09dfb702fab090131d4d7cf42c8f66c526960eea05c35

SHA512
22ad692f20483873a26005f31df6be2e92e487502fdeb3fb9d71362739e47bfb40775859694481e218b531d5ed8375c2f92bf4fc81164b7956a176abd9701e79

Download Submit
C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\bs4a8d8y.default-release\sessionstore-backups\recovery.jsonlz4

Filesize
3KB

MD5
1cdfd66223d9d41055cf8fb3fadaf321

SHA1
e3019a391aa29674203ffb012b1ba732e6db27fb

SHA256
e76c4a4d4c09112d6bdb8d062ca7e87eedca04f93d5dcc0ab50f4f8bb0583810

SHA512
bc48aec586f537877af0b9a52b0301bbdf58c9200a3aa4154c5338f8bb52e7f7b6cb4fae89f239eeb13985a467c6e566ffe846b0feebe474fab9b57c3c7de6ba

Download Submit
C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\bs4a8d8y.default-release\sessionstore-backups\recovery.jsonlz4

Filesize
1KB

MD5
283082e42359f75f86d6bdf64866e4cc

SHA1
3417610534dda38274fa7fdaa06df1dd2af4c953

SHA256
29d6ea521f94ec5943891d5fb31107aa33b3902d35f79fe97c3ef56d45d30ff8

SHA512
12f3f2b69c707aa80afb79ed09b766a8ded7cd9926e4abe735efc2d24db3e36615076051cbd136f59cb96f117700fe945fff4a2558f04393f3d3d65d07d869a2

Download Submit
C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\bs4a8d8y.default-release\sessionstore.jsonlz4

Filesize
3KB

MD5
dd763a5d33ad604100e01dacad9170f2

SHA1
0c06744a8a6e2fe9f70f18b77e4458da20f103b9

SHA256
b89e8532161d564c0fd632f327299254fb505bb07cfe1890583c525acdf05668

SHA512
950fc6cf2d90b0268c873f2b1e564b0225b6192dc93f360f7840da9c22dba7c5584005c25f35a3c9637248deefe44fcea7a8acd0cae213859bbc38ecd6cbd7ff

Download Submit
memory/2176-23-0x000007FEF5040000-0x000007FEF5705000-memory.dmp

Filesize
6.8MB

Download