nymaim | b9ce7b9e5ca81f4df5d049e15fca5f12e6badd857dd0bb3890036f1e8c212b39

Analysis

max time kernel
101s
max time network
131s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
30/09/2022, 09:00

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General

Target
file.exe
Size 229KB
Sample220930-kybhcsdah6
SHA256 b9ce7b9e5ca81f4df5d049e15fca5f12e6badd857dd0bb3890036f1e8c212b39
MD5 18b1e118bfc50ad04327b5c3e4178a74
SHA1 274873e115748f5b639095f0b79529615798736c
SHA512 31304e6d7bd4a2a499e06ac075de0c508a173b11148456ada34e2b3c85d05c515e8c36de81bffbddb95f1cf75f2cb9018a97956bdea70db403ac1d5fe83be31e
SSDEEP 3072:QNsiUYF1HSll8ReJmUDHH+nwFXINckVD6FYgXDQDgmoT0xV3XtRONdzYm0r902:QXHSHJmEHH+wFXM1D66gzyv3XtRdPr9
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

nymaim trojan

Malware Config

Extracted

Family

nymaim

208.67.104.97
85.31.46.167

Signatures

NyMaim
NyMaim is a malware with various capabilities written in C++ and first seen in 2013.
trojan nymaim
Downloads MZ/PE file

Executes dropped EXE 1 IoCs

pid	Process
3436	Cleaner.exe

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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Control Panel\International\Geo\Nation	file.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs

Web Service
T1102
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Program crash 13 IoCs

pid	pid_target	Process	procid_target
4804	4616	WerFault.exe	80
2076	4616	WerFault.exe	80
4264	4616	WerFault.exe	80
4152	4616	WerFault.exe	80
1204	4616	WerFault.exe	80
1068	4616	WerFault.exe	80
380	4616	WerFault.exe	80
4528	4616	WerFault.exe	80
2380	4616	WerFault.exe	80
4600	4616	WerFault.exe	80
1848	4616	WerFault.exe	80
1424	4616	WerFault.exe	80
3852	4616	WerFault.exe	80

Kills process with taskkill 1 IoCs

evasion

pid	Process
1772	taskkill.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
4616	file.exe
4616	file.exe
4616	file.exe
4616	file.exe
4616	file.exe
4616	file.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
4616	file.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3436	Cleaner.exe
Token: SeDebugPrivilege	1772	taskkill.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 4616 wrote to memory of 2168	4616	file.exe	98
PID 4616 wrote to memory of 2168	4616	file.exe	98
PID 4616 wrote to memory of 2168	4616	file.exe	98
PID 2168 wrote to memory of 3436	2168	cmd.exe	100
PID 2168 wrote to memory of 3436	2168	cmd.exe	100
PID 4616 wrote to memory of 3624	4616	file.exe	115
PID 4616 wrote to memory of 3624	4616	file.exe	115
PID 4616 wrote to memory of 3624	4616	file.exe	115
PID 3624 wrote to memory of 1772	3624	cmd.exe	119
PID 3624 wrote to memory of 1772	3624	cmd.exe	119
PID 3624 wrote to memory of 1772	3624	cmd.exe	119

C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe"
1⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of WriteProcessMemory
PID:4616
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4616 -s 464
  2⤵
  - Program crash
  PID:4804
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4616 -s 764
  2⤵
  - Program crash
  PID:2076
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4616 -s 784
  2⤵
  - Program crash
  PID:4264
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4616 -s 784
  2⤵
  - Program crash
  PID:4152
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4616 -s 764
  2⤵
  - Program crash
  PID:1204
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4616 -s 848
  2⤵
  - Program crash
  PID:1068
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4616 -s 1000
  2⤵
  - Program crash
  PID:380
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4616 -s 1376
  2⤵
  - Program crash
  PID:4528
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c start /I "" "C:\Users\Admin\AppData\Local\Temp\ugXQsG2FtNptwFGHmmm\Cleaner.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2168
- - C:\Users\Admin\AppData\Local\Temp\ugXQsG2FtNptwFGHmmm\Cleaner.exe
    "C:\Users\Admin\AppData\Local\Temp\ugXQsG2FtNptwFGHmmm\Cleaner.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of AdjustPrivilegeToken
    PID:3436
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4616 -s 1388
  2⤵
  - Program crash
  PID:2380
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4616 -s 1636
  2⤵
  - Program crash
  PID:4600
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im "file.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\file.exe" & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3624
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "file.exe" /f
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:1772
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4616 -s 1664
  2⤵
  - Program crash
  PID:1848
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4616 -s 1652
  2⤵
  - Program crash
  PID:1424
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4616 -s 1728
  2⤵
  - Program crash
  PID:3852

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 432 -p 4616 -ip 4616
1⤵
PID:4656

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 440 -p 4616 -ip 4616
1⤵
PID:3876

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 524 -p 4616 -ip 4616
1⤵
PID:5088

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 440 -p 4616 -ip 4616
1⤵
PID:4392

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 548 -p 4616 -ip 4616
1⤵
PID:2872

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 512 -p 4616 -ip 4616
1⤵
PID:4252

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 476 -p 4616 -ip 4616
1⤵
PID:448

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 540 -p 4616 -ip 4616
1⤵
PID:1628

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 4616 -ip 4616
1⤵
PID:3420

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 544 -p 4616 -ip 4616
1⤵
PID:3044

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 560 -p 4616 -ip 4616
1⤵
PID:1552

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 572 -p 4616 -ip 4616
1⤵
PID:3204

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 604 -p 4616 -ip 4616
1⤵
PID:1416

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Web Service

T1102

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Web Service

T1102

Exfiltration

Impact

Replay Monitor

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Downloads

Bunifu_UI_v1.5.3.dll

Path C:\Users\Admin\AppData\Local\Temp\ugXQsG2FtNptwFGHmmm\Bunifu_UI_v1.5.3.dll
Size 236KB
SHA256 f1b3e0f2750a9103e46a6a4a34f1cf9d17779725f98042cc2475ec66484801cf
MD5 2ecb51ab00c5f340380ecf849291dbcf
SHA1 1a4dffbce2a4ce65495ed79eab42a4da3b660931
SHA512 e241a48eafcaf99187035f0870d24d74ae97fe84aaadd2591cceea9f64b8223d77cfb17a038a58eadd3b822c5201a6f7494f26eea6f77d95f77f6c668d088e6b
SSDEEP 6144:SIQpxILDXGGMO7Ice9C5kQw2hWHcHTykhb:SIQpxILDXGGlET9n/cHG
MD5 SHA1 SHA512 SSDEEP

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Cleaner.exe

Path C:\Users\Admin\AppData\Local\Temp\ugXQsG2FtNptwFGHmmm\Cleaner.exe
Size 4.0MB
SHA256 f349739486dcb45f7cd39440784224c66a5d2c4bd2a47c48606e2f481a0fabe7
MD5 a1a19faf0af29841daeeaad999d899bd
SHA1 f67b9afdab167d5bcc544358b0e7fd2858784508
SHA512 a66ec486262e797bafd4fa032a719e499217993479fa78938e43db13289fe6fefc0ef3c3359e3cacb6223134396852be7cc9122c46ae74db3e9842d7f4fe65a8
SSDEEP 49152:M/PD/DL/D9CuZrr2h60qPGPD/jL/jdCuZrL2BaUKPmPD/jL/jdCuZrL2BaUKPs:M3D///UUrP6D/f/UULPaD/f/UULPs
MD5 SHA1 SHA512 SSDEEP

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Cleaner.exe

Path C:\Users\Admin\AppData\Local\Temp\ugXQsG2FtNptwFGHmmm\Cleaner.exe
Size 4.0MB
SHA256 f349739486dcb45f7cd39440784224c66a5d2c4bd2a47c48606e2f481a0fabe7
MD5 a1a19faf0af29841daeeaad999d899bd
SHA1 f67b9afdab167d5bcc544358b0e7fd2858784508
SHA512 a66ec486262e797bafd4fa032a719e499217993479fa78938e43db13289fe6fefc0ef3c3359e3cacb6223134396852be7cc9122c46ae74db3e9842d7f4fe65a8
SSDEEP 49152:M/PD/DL/D9CuZrr2h60qPGPD/jL/jdCuZrL2BaUKPmPD/jL/jdCuZrL2BaUKPs:M3D///UUrP6D/f/UULPaD/f/UULPs
MD5 SHA1 SHA512 SSDEEP

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memory/3436-140-0x00007FFB54770000-0x00007FFB55231000-memory.dmp

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memory/3436-139-0x00000179F4DC0000-0x00000179F4F18000-memory.dmp

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memory/3436-142-0x00000179F8660000-0x00000179F86A2000-memory.dmp

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memory/3436-144-0x00007FFB54770000-0x00007FFB55231000-memory.dmp

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memory/4616-132-0x0000000000659000-0x000000000067F000-memory.dmp

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memory/4616-134-0x0000000000400000-0x0000000000596000-memory.dmp

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memory/4616-143-0x0000000000400000-0x0000000000596000-memory.dmp

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memory/4616-145-0x0000000010000000-0x000000001001B000-memory.dmp

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memory/4616-133-0x0000000002300000-0x000000000233F000-memory.dmp

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memory/4616-151-0x0000000000400000-0x0000000000596000-memory.dmp

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