floxif | 83456fca50e47274b1fee990a9f363823d2a360afe6887a013a50994e8c88613

Analysis

max time kernel
145s
max time network
120s
platform
windows7_x64
resource
win7-20241023-en
resource tags

arch:x64arch:x86image:win7-20241023-enlocale:en-usos:windows7-x64system
submitted
24-12-2024 06:44

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General

Target

83456fca50e47274b1fee990a9f363823d2a360afe6887a013a50994e8c88613.exe
Size

2.4MB
MD5

50006ee5b75e7a6a18f74389c44ccdd7
SHA1

89d19803412f08e4434de9030a131343bc0d5abf
SHA256

83456fca50e47274b1fee990a9f363823d2a360afe6887a013a50994e8c88613
SHA512

93874ba44cf4be9a17b67c0aded14590b85474a778c91c11757e03abc76d61045e1eeded68ecea3288cc211cfc90d780b894793d3010e50783c851c33025a37e
SSDEEP

49152:mWBj/cNmqyAKvD+m6Kr5LiOb4CynlZWWTBQ6VqQqMsTbLf2JcdVj:vESVnWflZWWBFY2EVj

Score

10^/10

floxif backdoor discovery trojan upx

Malware Config

Signatures

Floxif family
floxif
Floxif, Floodfix
Floxif aka FloodFix is a file-changing trojan and backdoor written in C++.
backdoor trojan floxif

Detects Floxif payload 1 IoCs

backdoor

resource	yara_rule
behavioral1/files/0x000b000000012280-1.dat	floxif

ACProtect 1.3x - 1.4x DLL software 1 IoCs

Detects file using ACProtect software.

resource	yara_rule
behavioral1/files/0x000b000000012280-1.dat	acprotect

Executes dropped EXE 3 IoCs

pid	Process
1652	sg.tmp
2964	WinNTSetup_x64.exe
1176	Process not Found

Loads dropped DLL 7 IoCs

pid	Process
1968	83456fca50e47274b1fee990a9f363823d2a360afe6887a013a50994e8c88613.exe
1968	83456fca50e47274b1fee990a9f363823d2a360afe6887a013a50994e8c88613.exe
1968	83456fca50e47274b1fee990a9f363823d2a360afe6887a013a50994e8c88613.exe
2964	WinNTSetup_x64.exe
2964	WinNTSetup_x64.exe
2964	WinNTSetup_x64.exe
2964	WinNTSetup_x64.exe

Enumerates connected drives 3 TTPs 1 IoCs

Attempts to read the root path of hard drives other than the default C: drive.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

description	ioc	Process
File opened (read-only)	\??\e:	83456fca50e47274b1fee990a9f363823d2a360afe6887a013a50994e8c88613.exe

UPX packed file 11 IoCs

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

upx

resource	yara_rule
behavioral1/memory/1968-4-0x0000000010000000-0x0000000010030000-memory.dmp	upx
behavioral1/memory/1968-3-0x0000000000400000-0x000000000056B000-memory.dmp	upx
behavioral1/files/0x000b000000012280-1.dat	upx
behavioral1/memory/1968-247-0x0000000000400000-0x000000000056B000-memory.dmp	upx
behavioral1/memory/1968-439-0x0000000010000000-0x0000000010030000-memory.dmp	upx
behavioral1/memory/1968-438-0x0000000010000000-0x0000000010030000-memory.dmp	upx
behavioral1/memory/1968-476-0x0000000010000000-0x0000000010030000-memory.dmp	upx
behavioral1/memory/1968-482-0x0000000010000000-0x0000000010030000-memory.dmp	upx
behavioral1/memory/1968-487-0x0000000010000000-0x0000000010030000-memory.dmp	upx
behavioral1/memory/1968-492-0x0000000010000000-0x0000000010030000-memory.dmp	upx
behavioral1/memory/1968-498-0x0000000010000000-0x0000000010030000-memory.dmp	upx

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File created	\??\c:\program files\common files\system\symsrv.dll.000	83456fca50e47274b1fee990a9f363823d2a360afe6887a013a50994e8c88613.exe
File created	C:\Program Files\Common Files\System\symsrv.dll	83456fca50e47274b1fee990a9f363823d2a360afe6887a013a50994e8c88613.exe

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

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	83456fca50e47274b1fee990a9f363823d2a360afe6887a013a50994e8c88613.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
1968	83456fca50e47274b1fee990a9f363823d2a360afe6887a013a50994e8c88613.exe
1968	83456fca50e47274b1fee990a9f363823d2a360afe6887a013a50994e8c88613.exe
1968	83456fca50e47274b1fee990a9f363823d2a360afe6887a013a50994e8c88613.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2964	WinNTSetup_x64.exe

Suspicious use of AdjustPrivilegeToken 25 IoCs

description	pid	Process
Token: SeDebugPrivilege	1968	83456fca50e47274b1fee990a9f363823d2a360afe6887a013a50994e8c88613.exe
Token: SeBackupPrivilege	1968	83456fca50e47274b1fee990a9f363823d2a360afe6887a013a50994e8c88613.exe
Token: SeRestorePrivilege	1968	83456fca50e47274b1fee990a9f363823d2a360afe6887a013a50994e8c88613.exe
Token: 33	1968	83456fca50e47274b1fee990a9f363823d2a360afe6887a013a50994e8c88613.exe
Token: SeIncBasePriorityPrivilege	1968	83456fca50e47274b1fee990a9f363823d2a360afe6887a013a50994e8c88613.exe
Token: 33	1968	83456fca50e47274b1fee990a9f363823d2a360afe6887a013a50994e8c88613.exe
Token: SeIncBasePriorityPrivilege	1968	83456fca50e47274b1fee990a9f363823d2a360afe6887a013a50994e8c88613.exe
Token: 33	1968	83456fca50e47274b1fee990a9f363823d2a360afe6887a013a50994e8c88613.exe
Token: SeIncBasePriorityPrivilege	1968	83456fca50e47274b1fee990a9f363823d2a360afe6887a013a50994e8c88613.exe
Token: SeRestorePrivilege	1652	sg.tmp
Token: 35	1652	sg.tmp
Token: SeSecurityPrivilege	1652	sg.tmp
Token: SeSecurityPrivilege	1652	sg.tmp
Token: 33	1968	83456fca50e47274b1fee990a9f363823d2a360afe6887a013a50994e8c88613.exe
Token: SeIncBasePriorityPrivilege	1968	83456fca50e47274b1fee990a9f363823d2a360afe6887a013a50994e8c88613.exe
Token: SeTakeOwnershipPrivilege	2964	WinNTSetup_x64.exe
Token: SeSecurityPrivilege	2964	WinNTSetup_x64.exe
Token: SeRestorePrivilege	2964	WinNTSetup_x64.exe
Token: SeSystemEnvironmentPrivilege	2964	WinNTSetup_x64.exe
Token: SeBackupPrivilege	2964	WinNTSetup_x64.exe
Token: SeSecurityPrivilege	2964	WinNTSetup_x64.exe
Token: SeRestorePrivilege	2964	WinNTSetup_x64.exe
Token: SeSecurityPrivilege	2964	WinNTSetup_x64.exe
Token: SeTakeOwnershipPrivilege	2964	WinNTSetup_x64.exe
Token: SeManageVolumePrivilege	2964	WinNTSetup_x64.exe

Suspicious use of FindShellTrayWindow 2 IoCs

pid	Process
2964	WinNTSetup_x64.exe
2964	WinNTSetup_x64.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2964	WinNTSetup_x64.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 1968 wrote to memory of 2588	1968	83456fca50e47274b1fee990a9f363823d2a360afe6887a013a50994e8c88613.exe	30
PID 1968 wrote to memory of 2588	1968	83456fca50e47274b1fee990a9f363823d2a360afe6887a013a50994e8c88613.exe	30
PID 1968 wrote to memory of 2588	1968	83456fca50e47274b1fee990a9f363823d2a360afe6887a013a50994e8c88613.exe	30
PID 1968 wrote to memory of 2588	1968	83456fca50e47274b1fee990a9f363823d2a360afe6887a013a50994e8c88613.exe	30
PID 1968 wrote to memory of 1652	1968	83456fca50e47274b1fee990a9f363823d2a360afe6887a013a50994e8c88613.exe	32
PID 1968 wrote to memory of 1652	1968	83456fca50e47274b1fee990a9f363823d2a360afe6887a013a50994e8c88613.exe	32
PID 1968 wrote to memory of 1652	1968	83456fca50e47274b1fee990a9f363823d2a360afe6887a013a50994e8c88613.exe	32
PID 1968 wrote to memory of 1652	1968	83456fca50e47274b1fee990a9f363823d2a360afe6887a013a50994e8c88613.exe	32
PID 1968 wrote to memory of 2964	1968	83456fca50e47274b1fee990a9f363823d2a360afe6887a013a50994e8c88613.exe	34
PID 1968 wrote to memory of 2964	1968	83456fca50e47274b1fee990a9f363823d2a360afe6887a013a50994e8c88613.exe	34
PID 1968 wrote to memory of 2964	1968	83456fca50e47274b1fee990a9f363823d2a360afe6887a013a50994e8c88613.exe	34
PID 1968 wrote to memory of 2964	1968	83456fca50e47274b1fee990a9f363823d2a360afe6887a013a50994e8c88613.exe	34

C:\Users\Admin\AppData\Local\Temp\83456fca50e47274b1fee990a9f363823d2a360afe6887a013a50994e8c88613.exe
"C:\Users\Admin\AppData\Local\Temp\83456fca50e47274b1fee990a9f363823d2a360afe6887a013a50994e8c88613.exe"
1⤵
- Loads dropped DLL
- Enumerates connected drives
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1968
- C:\Windows\system32\cmd.exe
  cmd.exe /c set
  2⤵
  PID:2588
- C:\Users\Admin\AppData\Local\Temp\~6964805066548422439~\sg.tmp
  7zG_exe x "C:\Users\Admin\AppData\Local\Temp\83456fca50e47274b1fee990a9f363823d2a360afe6887a013a50994e8c88613.exe" -y -aoa -o"C:\Users\Admin\AppData\Local\Temp\~93989819778690015"
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:1652
- C:\Users\Admin\AppData\Local\Temp\~93989819778690015\WinNTSetup_x64.exe
  "C:\Users\Admin\AppData\Local\Temp\~93989819778690015\WinNTSetup_x64.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SetWindowsHookEx
  PID:2964

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Peripheral Device Discovery

T1120

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Program Files\Common Files\System\symsrv.dll.000

Filesize
175B

MD5
1130c911bf5db4b8f7cf9b6f4b457623

SHA1
48e734c4bc1a8b5399bff4954e54b268bde9d54c

SHA256
eba08cc8182f379392a97f542b350ea0dbbe5e4009472f35af20e3d857eafdf1

SHA512
94e2511ef2c53494c2aff0960266491ffc0e54e75185427d1ccedae27c286992c754ca94cbb0c9ea36e3f04cd4eb7f032c551cf2d4b309f292906303f1a75fa0

Download Submit
C:\Users\Admin\AppData\Local\Temp\CabB943.tmp

Filesize
70KB

MD5
49aebf8cbd62d92ac215b2923fb1b9f5

SHA1
1723be06719828dda65ad804298d0431f6aff976

SHA256
b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

SHA512
bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

Download Submit
C:\Users\Admin\AppData\Local\Temp\TarB965.tmp

Filesize
181KB

MD5
4ea6026cf93ec6338144661bf1202cd1

SHA1
a1dec9044f750ad887935a01430bf49322fbdcb7

SHA256
8efbc21559ef8b1bcf526800d8070baad42474ce7198e26fa771dbb41a76b1d8

SHA512
6c7e0980e39aacf4c3689802353f464a08cd17753bd210ee997e5f2a455deb4f287a9ef74d84579dbde49bc96213cd2b8b247723919c412ea980aa6e6bfe218b

Download Submit
C:\Users\Admin\AppData\Local\Temp\~93989819778690015\Tools\Imdisk\cpl\amd64\imdisk.cpl

Filesize
113KB

MD5
a19a0f76956805a157281a3998f06a29

SHA1
eb2e8fece8f2ffd2ef605a000fdbfe46bc97067a

SHA256
eb5b467f230bb85a74620a52f139cc35772e89ea9b8ffa2a64e10f878aa7b417

SHA512
5f4a013e28fdb2b67883144772afd717813d96f84d9eb680ad016fd78d0d8cc8061b5dd78d07238fd648c62dd1b09a8a0a752575a826bc1c96cdded84635f9db

Download Submit
C:\Users\Admin\AppData\Local\Temp\~93989819778690015\Tools\x64\offreg.dll

Filesize
117KB

MD5
709fa2fc9dbd03814312f6d28eaf4a37

SHA1
3b85bf42645f5be9d678d0d98a11946a4c7aeb65

SHA256
ec993b3c8d7522793a141c692c63c413d47e77dfc79d95491d913736fe8b1f01

SHA512
25b5f69d926a32de058cfd64dcdfc7579af5908cbbebe80fadd907681a2ca15f863071c5886c8cb5d09e979cce98486e962fc6d81717a49da20cc3eb03e45093

Download Submit
C:\Users\Admin\AppData\Local\Temp\~93989819778690015\Tools\x64\wimlib.dll

Filesize
481KB

MD5
cc6b60674d46b65572aed343a3bc460b

SHA1
14081de9b1699a5f6ff2a88585ce004a6e5910a1

SHA256
159df4e75742037c18c2388ac82a35ef79af870bb92e0ff3c24586ba7420972d

SHA512
866e17beb84f60da4243bf2d1795426c6ab9ecb6f50325cc3852a5c084ee27cd3cb45f3a9e79f91816da01264176217eb862c0a38ed343eb79557fcd0822136a

Download Submit
\Program Files\Common Files\System\symsrv.dll

Filesize
67KB

MD5
7574cf2c64f35161ab1292e2f532aabf

SHA1
14ba3fa927a06224dfe587014299e834def4644f

SHA256
de055a89de246e629a8694bde18af2b1605e4b9b493c7e4aef669dd67acf5085

SHA512
4db19f2d8d5bc1c7bbb812d3fa9c43b80fa22140b346d2760f090b73aed8a5177edb4bddc647a6ebd5a2db8565be5a1a36a602b0d759e38540d9a584ba5896ab

Download Submit
\Users\Admin\AppData\Local\Temp\~6964805066548422439~\sg.tmp

Filesize
715KB

MD5
7c4718943bd3f66ebdb47ccca72c7b1e

SHA1
f9edfaa7adb8fa528b2e61b2b251f18da10a6969

SHA256
4cc32d00338fc7b206a7c052297acf9ac304ae7de9d61a2475a116959c1524fc

SHA512
e18c40d646fa4948f90f7471da55489df431f255041ebb6dcef86346f91078c9b27894e27216a4b2fe2a1c5e501c7953c77893cf696930123d28a322d49e1516

Download Submit
\Users\Admin\AppData\Local\Temp\~93989819778690015\Tools\x64\BootICE\BOOTICEx64.exe

Filesize
456KB

MD5
949292f7fa78b84bd07cf521f7a3f603

SHA1
50925a82d8d6566a19a1c9db34462f6b7b1e0f8f

SHA256
75dc47ee7227f6691dea4f6d0d58b742a04d874de74b61e5fbdd8fa298de6f88

SHA512
c1ecd4a0c610f58753cfe1a9f62991b055b38946c25289f1b4643ced3501a5febeded7c6fe926e3ab2b379e220ee1e5a4dfca2b63f51a9b48da7891eac70d1ff

Download Submit
\Users\Admin\AppData\Local\Temp\~93989819778690015\WinNTSetup_x64.exe

Filesize
1.1MB

MD5
edbc6b1b9297fbad072e2f6a1f4a4d7c

SHA1
08e89a69a11195d97384b80595798a7877e85b68

SHA256
6ac5351fde092a77b6f23ef9ef00748aeefa9597a953bca4e9da2c402d0e837d

SHA512
e573b9a35389aa9b1581760cb1a459c8bf7a272459801a76059214d9e16c1134a24a4b68488ded8ca6a922d577be286e19094568fb256dcd3edf4800fe5c2dbb

Download Submit
memory/1968-439-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/1968-438-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/1968-4-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/1968-247-0x0000000000400000-0x000000000056B000-memory.dmp

Filesize
1.4MB

Download
memory/1968-476-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/1968-482-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/1968-487-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/1968-3-0x0000000000400000-0x000000000056B000-memory.dmp

Filesize
1.4MB

Download
memory/1968-492-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/1968-498-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/2964-472-0x00000000065F0000-0x0000000006749000-memory.dmp

Filesize
1.3MB

Download
memory/2964-477-0x000007FEF7BD0000-0x000007FEF7C70000-memory.dmp

Filesize
640KB

Download
memory/2964-478-0x00000000065F0000-0x0000000006749000-memory.dmp

Filesize
1.3MB

Download