nymaim | e1f0e3d173e173c2fb84a1eb572d69eac9db8d39d98775c44d6fcaee23559357

General

Target

file.exe
Size

1.5MB
MD5

7479510564e2c2902407916e2dcd2c5e
SHA1

dd86bc7ad5e1919dab6088e46501609b6a4dec0b
SHA256

e1f0e3d173e173c2fb84a1eb572d69eac9db8d39d98775c44d6fcaee23559357
SHA512

38ddca2d61b58a109e24574ae6e2878293fc09cbd3b5f19a073e36762a37b700fe83aef707815e9898318821723dd9dc2a23a8479ad21ba5594bc3f5e5aa4926
SSDEEP

24576:220Sx+o1DesP0TVPMXmj9PGLTrMwt0iDYYuTI518qNaNtgXC75ld1qSVpk:228SDesP0bQL0y0IY9Tu8qNaNdd1qapk

Score

10^/10

nymaim discovery trojan

Malware Config

Extracted

Family

nymaim

C2

45.139.105.171

85.31.46.167

Signatures

NyMaim
NyMaim is a malware with various capabilities written in C++ and first seen in 2013.
trojan nymaim

Executes dropped EXE 3 IoCs

pid	Process
5004	file.tmp
5024	MitFiles138.exe
5080	izXDU.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-1-5-21-2971393436-602173351-1645505021-1000\Control Panel\International\Geo\Nation	MitFiles138.exe

Loads dropped DLL 1 IoCs

pid	Process
5004	file.tmp

Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012

Drops file in Program Files directory 17 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\Mit Files\language\is-SD7GL.tmp	file.tmp
File created	C:\Program Files (x86)\Mit Files\language\is-30OK1.tmp	file.tmp
File created	C:\Program Files (x86)\Mit Files\language\is-PIHG0.tmp	file.tmp
File created	C:\Program Files (x86)\Mit Files\language\is-H88EK.tmp	file.tmp
File created	C:\Program Files (x86)\Mit Files\is-0QN9C.tmp	file.tmp
File created	C:\Program Files (x86)\Mit Files\unins000.dat	file.tmp
File created	C:\Program Files (x86)\Mit Files\language\is-08TN5.tmp	file.tmp
File created	C:\Program Files (x86)\Mit Files\is-P473C.tmp	file.tmp
File created	C:\Program Files (x86)\Mit Files\is-FUBLB.tmp	file.tmp
File created	C:\Program Files (x86)\Mit Files\language\is-D60PC.tmp	file.tmp
File created	C:\Program Files (x86)\Mit Files\language\is-MJ480.tmp	file.tmp
File created	C:\Program Files (x86)\Mit Files\language\is-MQ2UD.tmp	file.tmp
File created	C:\Program Files (x86)\Mit Files\language\is-MUK5C.tmp	file.tmp
File opened for modification	C:\Program Files (x86)\Mit Files\unins000.dat	file.tmp
File opened for modification	C:\Program Files (x86)\Mit Files\MitFiles138.exe	file.tmp
File created	C:\Program Files (x86)\Mit Files\is-G5F1J.tmp	file.tmp
File created	C:\Program Files (x86)\Mit Files\is-HQFLM.tmp	file.tmp

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

System Information Discovery
T1082

Kills process with taskkill 1 IoCs

evasion

pid	Process
3248	taskkill.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
5024	MitFiles138.exe
5024	MitFiles138.exe
5024	MitFiles138.exe
5024	MitFiles138.exe
5024	MitFiles138.exe
5024	MitFiles138.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3248	taskkill.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 3788 wrote to memory of 5004	3788	file.exe	80
PID 3788 wrote to memory of 5004	3788	file.exe	80
PID 3788 wrote to memory of 5004	3788	file.exe	80
PID 5004 wrote to memory of 5024	5004	file.tmp	81
PID 5004 wrote to memory of 5024	5004	file.tmp	81
PID 5004 wrote to memory of 5024	5004	file.tmp	81
PID 5024 wrote to memory of 5080	5024	MitFiles138.exe	82
PID 5024 wrote to memory of 5080	5024	MitFiles138.exe	82
PID 5024 wrote to memory of 5080	5024	MitFiles138.exe	82
PID 5024 wrote to memory of 3696	5024	MitFiles138.exe	90
PID 5024 wrote to memory of 3696	5024	MitFiles138.exe	90
PID 5024 wrote to memory of 3696	5024	MitFiles138.exe	90
PID 3696 wrote to memory of 3248	3696	cmd.exe	92
PID 3696 wrote to memory of 3248	3696	cmd.exe	92
PID 3696 wrote to memory of 3248	3696	cmd.exe	92

C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:3788
- C:\Users\Admin\AppData\Local\Temp\is-7SLT1.tmp\file.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-7SLT1.tmp\file.tmp" /SL5="$9004E,1325080,483328,C:\Users\Admin\AppData\Local\Temp\file.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Drops file in Program Files directory
  - Suspicious use of WriteProcessMemory
  PID:5004
- - C:\Program Files (x86)\Mit Files\MitFiles138.exe
    "C:\Program Files (x86)\Mit Files\MitFiles138.exe"
    3⤵
    - Executes dropped EXE
    - Checks computer location settings
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of WriteProcessMemory
    PID:5024
  - - C:\Users\Admin\AppData\Roaming\{6e1ce040-6208-11ed-b5ce-806e6f6e6963}\izXDU.exe
      4⤵
      Executes dropped EXE
      PID:5080
  - - C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c taskkill /im "MitFiles138.exe" /f & erase "C:\Program Files (x86)\Mit Files\MitFiles138.exe" & exit
      4⤵
      Suspicious use of WriteProcessMemory
      PID:3696
    - - C:\Windows\SysWOW64\taskkill.exe
        
        taskkill /im "MitFiles138.exe" /f
        5⤵
        Kills process with taskkill
        Suspicious use of AdjustPrivilegeToken
        
        PID:3248

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Program Files (x86)\Mit Files\MitFiles138.exe

Filesize
1.8MB

MD5
1a12369718a9ae0550408ede65ea61ae

SHA1
c3f1b5f0a3cbb83160bfe3fa5dc194c7879ca4c6

SHA256
f6ec1231e871009a9b77f1e37284e7420d2077317fd9e6f768b945277296b366

SHA512
4eae2709a9eed67f110c3346cd10edd1c074c364b835110b91d834879182873d09dd95cb924a54d22fd88b1e4c98c667710f59f229c9a078aa1ce3bc399b7c06

Download Submit
C:\Program Files (x86)\Mit Files\MitFiles138.exe

Filesize
1.8MB

MD5
1a12369718a9ae0550408ede65ea61ae

SHA1
c3f1b5f0a3cbb83160bfe3fa5dc194c7879ca4c6

SHA256
f6ec1231e871009a9b77f1e37284e7420d2077317fd9e6f768b945277296b366

SHA512
4eae2709a9eed67f110c3346cd10edd1c074c364b835110b91d834879182873d09dd95cb924a54d22fd88b1e4c98c667710f59f229c9a078aa1ce3bc399b7c06

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-222BK.tmp\_isetup\_iscrypt.dll

Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-7SLT1.tmp\file.tmp

Filesize
695KB

MD5
415533bb40980951c966665cff9e2fe7

SHA1
fce396c8fa01876dd008f22c8be9a9b706f4aaec

SHA256
f688364bb17f03e53de641e7a0b0efefe30ac155fa9fa414a2150204ed9d3734

SHA512
3a8f88fa83e9f8be96fc9a0e8b47536455f50b1c511210d98fa178444b1e5ad1943cc3000e869f6dba4c782b48a3538d0b52d5e29ce3a692636aefc0e52083ae

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-7SLT1.tmp\file.tmp

Filesize
695KB

MD5
415533bb40980951c966665cff9e2fe7

SHA1
fce396c8fa01876dd008f22c8be9a9b706f4aaec

SHA256
f688364bb17f03e53de641e7a0b0efefe30ac155fa9fa414a2150204ed9d3734

SHA512
3a8f88fa83e9f8be96fc9a0e8b47536455f50b1c511210d98fa178444b1e5ad1943cc3000e869f6dba4c782b48a3538d0b52d5e29ce3a692636aefc0e52083ae

Download Submit
C:\Users\Admin\AppData\Roaming\{6e1ce040-6208-11ed-b5ce-806e6f6e6963}\izXDU.exe

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
C:\Users\Admin\AppData\Roaming\{6e1ce040-6208-11ed-b5ce-806e6f6e6963}\izXDU.exe

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
memory/3788-138-0x0000000000400000-0x000000000047D000-memory.dmp

Filesize
500KB

Download
memory/3788-156-0x0000000000400000-0x000000000047D000-memory.dmp

Filesize
500KB

Download
memory/3788-132-0x0000000000400000-0x000000000047D000-memory.dmp

Filesize
500KB

Download
memory/5024-142-0x0000000000400000-0x00000000013C2000-memory.dmp

Filesize
15.8MB

Download
memory/5024-148-0x0000000010000000-0x000000001001B000-memory.dmp

Filesize
108KB

Download
memory/5024-152-0x0000000000400000-0x00000000013C2000-memory.dmp

Filesize
15.8MB

Download
memory/5024-144-0x0000000000400000-0x00000000013C2000-memory.dmp

Filesize
15.8MB

Download
memory/5024-155-0x0000000000400000-0x00000000013C2000-memory.dmp

Filesize
15.8MB

Download
memory/5024-143-0x0000000000400000-0x00000000013C2000-memory.dmp

Filesize
15.8MB

Download

Analysis

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