e73046a28c0736bc881eed591613cbfaa88f370309f745a06f19bd4979e752da

Resubmissions

03-11-2023 20:00

231103-yqxyaabf64 1

03-11-2023 19:57

231103-yprpwahe8y 1

Analysis

max time kernel
41s
max time network
46s
platform
windows7_x64
resource
win7-20231023-en
resource tags

arch:x64arch:x86image:win7-20231023-enlocale:en-usos:windows7-x64system
submitted
03-11-2023 20:00

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Report Analysis Logs

General

Target

IRS.gov_Form5071c.html
Size

2KB
MD5

117686efcd9ed95c9b7c300854fb9102
SHA1

299c6767032540195d4e0f4b5815f1f03e8d4f28
SHA256

e73046a28c0736bc881eed591613cbfaa88f370309f745a06f19bd4979e752da
SHA512

535e214d9ea05d4636aeab0d383a5e5efe605146ba6522b4525adba75aaa22691f64e76cff32812fabd7349b5cc3d0ddbced8341c62ddfdde11145b713ac0598

Score

1^/10

Malware Config

Signatures

Checks processor information in registry 2 TTPs 4 IoCs

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

Query Registry

T1012

System Information Discovery

T1082

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\~Mhz	firefox.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier	firefox.exe

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-2085049433-1067986815-1244098655-1000_Classes\Local Settings	firefox.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1940	firefox.exe
Token: SeDebugPrivilege	1940	firefox.exe

Suspicious use of FindShellTrayWindow 4 IoCs

pid	Process
1940	firefox.exe
1940	firefox.exe
1940	firefox.exe
1940	firefox.exe

Suspicious use of SendNotifyMessage 3 IoCs

pid	Process
1940	firefox.exe
1940	firefox.exe
1940	firefox.exe

Suspicious use of WriteProcessMemory 64 IoCs

description	pid	Process	procid_target
PID 2236 wrote to memory of 1940	2236	firefox.exe	28
PID 2236 wrote to memory of 1940	2236	firefox.exe	28
PID 2236 wrote to memory of 1940	2236	firefox.exe	28
PID 2236 wrote to memory of 1940	2236	firefox.exe	28
PID 2236 wrote to memory of 1940	2236	firefox.exe	28
PID 2236 wrote to memory of 1940	2236	firefox.exe	28
PID 2236 wrote to memory of 1940	2236	firefox.exe	28
PID 2236 wrote to memory of 1940	2236	firefox.exe	28
PID 2236 wrote to memory of 1940	2236	firefox.exe	28
PID 2236 wrote to memory of 1940	2236	firefox.exe	28
PID 2236 wrote to memory of 1940	2236	firefox.exe	28
PID 2236 wrote to memory of 1940	2236	firefox.exe	28
PID 1940 wrote to memory of 2784	1940	firefox.exe	29
PID 1940 wrote to memory of 2784	1940	firefox.exe	29
PID 1940 wrote to memory of 2784	1940	firefox.exe	29
PID 1940 wrote to memory of 2796	1940	firefox.exe	30
PID 1940 wrote to memory of 2796	1940	firefox.exe	30
PID 1940 wrote to memory of 2796	1940	firefox.exe	30
PID 1940 wrote to memory of 2796	1940	firefox.exe	30
PID 1940 wrote to memory of 2796	1940	firefox.exe	30
PID 1940 wrote to memory of 2796	1940	firefox.exe	30
PID 1940 wrote to memory of 2796	1940	firefox.exe	30
PID 1940 wrote to memory of 2796	1940	firefox.exe	30
PID 1940 wrote to memory of 2796	1940	firefox.exe	30
PID 1940 wrote to memory of 2796	1940	firefox.exe	30
PID 1940 wrote to memory of 2796	1940	firefox.exe	30
PID 1940 wrote to memory of 2796	1940	firefox.exe	30
PID 1940 wrote to memory of 2796	1940	firefox.exe	30
PID 1940 wrote to memory of 2796	1940	firefox.exe	30
PID 1940 wrote to memory of 2796	1940	firefox.exe	30
PID 1940 wrote to memory of 2796	1940	firefox.exe	30
PID 1940 wrote to memory of 2796	1940	firefox.exe	30
PID 1940 wrote to memory of 2796	1940	firefox.exe	30
PID 1940 wrote to memory of 2796	1940	firefox.exe	30
PID 1940 wrote to memory of 2796	1940	firefox.exe	30
PID 1940 wrote to memory of 2796	1940	firefox.exe	30
PID 1940 wrote to memory of 2796	1940	firefox.exe	30
PID 1940 wrote to memory of 2796	1940	firefox.exe	30
PID 1940 wrote to memory of 2796	1940	firefox.exe	30
PID 1940 wrote to memory of 2796	1940	firefox.exe	30
PID 1940 wrote to memory of 2796	1940	firefox.exe	30
PID 1940 wrote to memory of 2796	1940	firefox.exe	30
PID 1940 wrote to memory of 2796	1940	firefox.exe	30
PID 1940 wrote to memory of 2796	1940	firefox.exe	30
PID 1940 wrote to memory of 2796	1940	firefox.exe	30
PID 1940 wrote to memory of 2796	1940	firefox.exe	30
PID 1940 wrote to memory of 2796	1940	firefox.exe	30
PID 1940 wrote to memory of 2796	1940	firefox.exe	30
PID 1940 wrote to memory of 2796	1940	firefox.exe	30
PID 1940 wrote to memory of 2796	1940	firefox.exe	30
PID 1940 wrote to memory of 2796	1940	firefox.exe	30
PID 1940 wrote to memory of 2796	1940	firefox.exe	30
PID 1940 wrote to memory of 2796	1940	firefox.exe	30
PID 1940 wrote to memory of 2796	1940	firefox.exe	30
PID 1940 wrote to memory of 2796	1940	firefox.exe	30
PID 1940 wrote to memory of 2796	1940	firefox.exe	30
PID 1940 wrote to memory of 2796	1940	firefox.exe	30
PID 1940 wrote to memory of 2796	1940	firefox.exe	30
PID 1940 wrote to memory of 2796	1940	firefox.exe	30
PID 1940 wrote to memory of 2336	1940	firefox.exe	31
PID 1940 wrote to memory of 2336	1940	firefox.exe	31
PID 1940 wrote to memory of 2336	1940	firefox.exe	31
PID 1940 wrote to memory of 2336	1940	firefox.exe	31
PID 1940 wrote to memory of 2336	1940	firefox.exe	31

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 "C:\Users\Admin\AppData\Local\Temp\IRS.gov_Form5071c.html"
1⤵
- Suspicious use of WriteProcessMemory
PID:2236
- C:\Program Files\Mozilla Firefox\firefox.exe
  "C:\Program Files\Mozilla Firefox\firefox.exe" -osint -url C:\Users\Admin\AppData\Local\Temp\IRS.gov_Form5071c.html
  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:1940
- - C:\Program Files\Mozilla Firefox\firefox.exe
    "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel="1940.0.1322874565\1058820402" -parentBuildID 20221007134813 -prefsHandle 1256 -prefMapHandle 1248 -prefsLen 20938 -prefMapSize 232675 -appDir "C:\Program Files\Mozilla Firefox\browser" - {bea0e690-fc6e-44af-a75a-006f6790a2ea} 1940 "\\.\pipe\gecko-crash-server-pipe.1940" 1320 40d0258 gpu
    3⤵
    PID:2784
- - C:\Program Files\Mozilla Firefox\firefox.exe
    "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel="1940.1.931016179\1236941967" -parentBuildID 20221007134813 -prefsHandle 1508 -prefMapHandle 1504 -prefsLen 21799 -prefMapSize 232675 -appDir "C:\Program Files\Mozilla Firefox\browser" - {412b6eab-2d6e-40f1-a19f-ff236bb375d8} 1940 "\\.\pipe\gecko-crash-server-pipe.1940" 1536 e6f858 socket
    3⤵
    PID:2796
- - C:\Program Files\Mozilla Firefox\firefox.exe
    "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel="1940.2.153354890\575260555" -childID 1 -isForBrowser -prefsHandle 2120 -prefMapHandle 2116 -prefsLen 21837 -prefMapSize 232675 -jsInitHandle 900 -jsInitLen 246848 -a11yResourceId 64 -parentBuildID 20221007134813 -appDir "C:\Program Files\Mozilla Firefox\browser" - {8a7d8548-c887-4ee2-826a-ea79205bdc19} 1940 "\\.\pipe\gecko-crash-server-pipe.1940" 2132 19da1758 tab
    3⤵
    PID:2336
- - C:\Program Files\Mozilla Firefox\firefox.exe
    "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel="1940.3.329196810\424876974" -childID 2 -isForBrowser -prefsHandle 2572 -prefMapHandle 2568 -prefsLen 26482 -prefMapSize 232675 -jsInitHandle 900 -jsInitLen 246848 -a11yResourceId 64 -parentBuildID 20221007134813 -appDir "C:\Program Files\Mozilla Firefox\browser" - {d4dd8deb-1586-44c2-9763-a52b95b8b85d} 1940 "\\.\pipe\gecko-crash-server-pipe.1940" 2584 e67858 tab
    3⤵
    PID:2704
- - C:\Program Files\Mozilla Firefox\firefox.exe
    "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel="1940.4.812399958\1989362757" -childID 3 -isForBrowser -prefsHandle 3648 -prefMapHandle 3608 -prefsLen 26797 -prefMapSize 232675 -jsInitHandle 900 -jsInitLen 246848 -a11yResourceId 64 -parentBuildID 20221007134813 -appDir "C:\Program Files\Mozilla Firefox\browser" - {14399260-8d11-4a9c-82a4-873334dc52f5} 1940 "\\.\pipe\gecko-crash-server-pipe.1940" 3668 1d356a58 tab
    3⤵
    PID:1604
- - C:\Program Files\Mozilla Firefox\firefox.exe
    "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel="1940.5.1073861819\592637058" -childID 4 -isForBrowser -prefsHandle 3784 -prefMapHandle 3788 -prefsLen 26797 -prefMapSize 232675 -jsInitHandle 900 -jsInitLen 246848 -a11yResourceId 64 -parentBuildID 20221007134813 -appDir "C:\Program Files\Mozilla Firefox\browser" - {47d89e14-0bc8-4496-84cb-11c9f10f56b4} 1940 "\\.\pipe\gecko-crash-server-pipe.1940" 3772 1ef81358 tab
    3⤵
    PID:1792
- - C:\Program Files\Mozilla Firefox\firefox.exe
    "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel="1940.6.1463418033\1303843964" -childID 5 -isForBrowser -prefsHandle 3940 -prefMapHandle 3944 -prefsLen 26797 -prefMapSize 232675 -jsInitHandle 900 -jsInitLen 246848 -a11yResourceId 64 -parentBuildID 20221007134813 -appDir "C:\Program Files\Mozilla Firefox\browser" - {a0be0eb6-04e2-4f38-aaf8-6f5763154ef2} 1940 "\\.\pipe\gecko-crash-server-pipe.1940" 3928 1ef81f58 tab
    3⤵
    PID:2120

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

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Downloads

C:\Users\Admin\AppData\Local\Mozilla\Firefox\Profiles\04e2bwzs.default-release\activity-stream.discovery_stream.json.tmp

Filesize
22KB

MD5
65d7d97999a07b5603d64cf53c2ec341

SHA1
9b3ac62affa3d8c921d66b096d6fd1750b6a77cb

SHA256
8bbf9f7895c1c30cda377dc96de9082c38845cc01421a6c6cdd2de216fb987e2

SHA512
a1376490c3fa01ce4e2b83ba06321efbd8a14d577a91563656c4c3ec009c5ae8971c3d077fcb48deaeed5d65ec2eafa6b95c9a7ded42d7757ad59522c44011ea

Download Submit
C:\Users\Admin\AppData\Local\Mozilla\Firefox\Profiles\04e2bwzs.default-release\cache2\entries\51D52D298316CD3F9A90A40E946BB34EFA1BFB72

Filesize
13KB

MD5
961fe184dfeb6fe2872c744409cac85f

SHA1
658a57d71c6f1ce70dbe13b7c4b538a699c99ec4

SHA256
8a6839adfef31cfdba17009345b38877b7813f57d0f3e2f9132dda4f3738785f

SHA512
de877b86759f102c5017de45e0bb3fc9558cb6ce73c79fa9b0238e094d364382819baeff37c01c278be0c7eb028ccfc1989c2f1099be27e43d236a4b43de0e19

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
6.1MB

MD5
8e4d893687b7eb40a8db59a5f598ff98

SHA1
1a322dca059ffb2b7839f3951e7a7233f279e5a7

SHA256
f1e204d46aec205264054631f664263ed3e993d09f4e6ec2c7d443e7127f8508

SHA512
0d33d8ce92025dbdd89e97f19518b45a94165dc85edb97e3d3332b0d0567cf2fbd273dc629bfb5c5530c6e4efc23c00d5a4e425dbd81d6ec43820bf0060a1d35

Download Submit
C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\04e2bwzs.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\04e2bwzs.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\04e2bwzs.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\04e2bwzs.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\04e2bwzs.default-release\gmp-widevinecdm\4.10.2557.0\widevinecdm.dll

Filesize
3.7MB

MD5
cafeb6d904103539df305d0911e52dca

SHA1
4367ae30840a6ab5be685d98b766afb0540474cd

SHA256
242a2c99a44aebbf233f4128ef3d852624397de8661b0f1296daac00280bff03

SHA512
0b2e1041970dbcdf5a9273953b7bd5fa1b219147973d452d4278beb57f9bc1ce1bc16524c3703ea2dc0f7ab00dc72732a4c02a5f991d86fe4b21e328be843149

Download Submit
C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\04e2bwzs.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\04e2bwzs.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\04e2bwzs.default-release\prefs-1.js

Filesize
7KB

MD5
f571617f8e5dcf0e877bb513ad646cb0

SHA1
f0d29f7858867138b63b0504268d33ca97486d8a

SHA256
e17bab0f8b3dd04561c0fa93a7912bb10826d27b5063897520b50fb305bf859b

SHA512
e9921cc6e055c6917e4c67d0502b5b677ae6999a4628f72dc78042fc8a5d45759ca7775f9619f5fbfdd8aca885bd3dc0ba51dd09e5c706976efa5a52d659adaf

Download Submit
C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\04e2bwzs.default-release\prefs-1.js

Filesize
7KB

MD5
7c93fbf2b35385916983b59789972532

SHA1
3e0bc738d7acf048e63619c6cf7544140a6295e5

SHA256
a4a4b066f98b77b55a391d0b756b09be49621437160c6f74ad21a4f4dd6c887e

SHA512
942dc7dbd969f039b0994d50932ff3db660d8f51d9ed258ccb02a7b76526e1191593bf814c11b3bf035dc4645cac77206f9af409d6d01199fd47fe6177aa9265

Download Submit
C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\04e2bwzs.default-release\sessionstore-backups\recovery.jsonlz4

Filesize
1KB

MD5
95b3e52d1f09e51e9c522bf32ffec8a7

SHA1
4956c2ba96dff0d9650c5b26814a30ed3267098e

SHA256
a586cff4f99fdfa9f3296bc1b4cc0e37ac87616a361ebe67af298e87ce346f1c

SHA512
c9c127447605ffce9a1b7f0f7c43810e19b635327b1fa5c7b09ee64413325095217f27df4158d7c8e10fd51591d0fcc27fede08c9c6030e1158c05d974fb5db7

Download Submit