nymaim | dedb568ff89e198a13a43f6794b5bf3c2715f1f89ba958760e2c186536a4c4bf

General

Target

file.exe
Size

1.7MB
MD5

ddc5c4658b547688d4ad8b2fe09af4a0
SHA1

512f9b6df143e2db48a23b57bd8f8d3a3cba83ba
SHA256

dedb568ff89e198a13a43f6794b5bf3c2715f1f89ba958760e2c186536a4c4bf
SHA512

280195baf6af1709e524919cad9dc2d04a1464852fcf5f63cc83f372f7b2aa3b13906f056290e4ad1a9a61cc87157e3e469af84ed30a6c057a4b2e194cc5d75e
SSDEEP

24576:220Sx+opu7I/0c809dyyT9TDrcTinwzF0craGO3CmSBvi/LsrL8Gz4gXC75ld1qP:228yuC8YQ29T8T6wknSNVDod1qapk

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
4788	file.tmp
3084	MitFiles138.exe
1796	BFH2uo3S0uG.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-1-5-21-929662420-1054238289-2961194603-1000\Control Panel\International\Geo\Nation	MitFiles138.exe

Loads dropped DLL 1 IoCs

pid	Process
4788	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-OCMLP.tmp	file.tmp
File created	C:\Program Files (x86)\Mit Files\is-VVFOM.tmp	file.tmp
File created	C:\Program Files (x86)\Mit Files\language\is-1MFNH.tmp	file.tmp
File created	C:\Program Files (x86)\Mit Files\language\is-J668D.tmp	file.tmp
File created	C:\Program Files (x86)\Mit Files\language\is-H42JL.tmp	file.tmp
File created	C:\Program Files (x86)\Mit Files\is-LRGK2.tmp	file.tmp
File opened for modification	C:\Program Files (x86)\Mit Files\MitFiles138.exe	file.tmp
File created	C:\Program Files (x86)\Mit Files\unins000.dat	file.tmp
File created	C:\Program Files (x86)\Mit Files\is-RD1IH.tmp	file.tmp
File created	C:\Program Files (x86)\Mit Files\language\is-0PPKC.tmp	file.tmp
File created	C:\Program Files (x86)\Mit Files\language\is-ERTJJ.tmp	file.tmp
File created	C:\Program Files (x86)\Mit Files\language\is-8O3ET.tmp	file.tmp
File created	C:\Program Files (x86)\Mit Files\is-B2S0N.tmp	file.tmp
File created	C:\Program Files (x86)\Mit Files\language\is-I9NFQ.tmp	file.tmp
File created	C:\Program Files (x86)\Mit Files\language\is-CMHFT.tmp	file.tmp
File created	C:\Program Files (x86)\Mit Files\is-2GO86.tmp	file.tmp
File opened for modification	C:\Program Files (x86)\Mit Files\unins000.dat	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
3376	taskkill.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
3084	MitFiles138.exe
3084	MitFiles138.exe
3084	MitFiles138.exe
3084	MitFiles138.exe
3084	MitFiles138.exe
3084	MitFiles138.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3376	taskkill.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 4844 wrote to memory of 4788	4844	file.exe	81
PID 4844 wrote to memory of 4788	4844	file.exe	81
PID 4844 wrote to memory of 4788	4844	file.exe	81
PID 4788 wrote to memory of 3084	4788	file.tmp	82
PID 4788 wrote to memory of 3084	4788	file.tmp	82
PID 4788 wrote to memory of 3084	4788	file.tmp	82
PID 3084 wrote to memory of 1796	3084	MitFiles138.exe	85
PID 3084 wrote to memory of 1796	3084	MitFiles138.exe	85
PID 3084 wrote to memory of 1796	3084	MitFiles138.exe	85
PID 3084 wrote to memory of 1980	3084	MitFiles138.exe	91
PID 3084 wrote to memory of 1980	3084	MitFiles138.exe	91
PID 3084 wrote to memory of 1980	3084	MitFiles138.exe	91
PID 1980 wrote to memory of 3376	1980	cmd.exe	93
PID 1980 wrote to memory of 3376	1980	cmd.exe	93
PID 1980 wrote to memory of 3376	1980	cmd.exe	93

C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:4844
- C:\Users\Admin\AppData\Local\Temp\is-H1TL6.tmp\file.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-H1TL6.tmp\file.tmp" /SL5="$1301D8,1511182,483328,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:4788
- - 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:3084
  - - C:\Users\Admin\AppData\Roaming\{d6dc608d-2a27-11ed-a0e3-806e6f6e6963}\BFH2uo3S0uG.exe
      4⤵
      Executes dropped EXE
      PID:1796
  - - 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:1980
    - - C:\Windows\SysWOW64\taskkill.exe
        
        taskkill /im "MitFiles138.exe" /f
        5⤵
        Kills process with taskkill
        Suspicious use of AdjustPrivilegeToken
        
        PID:3376

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
1.9MB

MD5
aee06f3edcc369eb7a4122aefcf1b315

SHA1
876725f2147fe2c407ebbde9f2b7e7c8fe8e20ef

SHA256
726f343c99b20673d942e2efe862c06b271167093394a249b70f47b7e502a798

SHA512
ec99e128798ffaa4740e546675ed98a479b7671f3e98175604cbf0595d5a3aa852ca71a07aa02091afc62e62b0548b6712424e454a59ae3fce50e63fea13edfa

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

Filesize
1.9MB

MD5
aee06f3edcc369eb7a4122aefcf1b315

SHA1
876725f2147fe2c407ebbde9f2b7e7c8fe8e20ef

SHA256
726f343c99b20673d942e2efe862c06b271167093394a249b70f47b7e502a798

SHA512
ec99e128798ffaa4740e546675ed98a479b7671f3e98175604cbf0595d5a3aa852ca71a07aa02091afc62e62b0548b6712424e454a59ae3fce50e63fea13edfa

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-9JQBD.tmp\_isetup\_iscrypt.dll

Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-H1TL6.tmp\file.tmp

Filesize
695KB

MD5
415533bb40980951c966665cff9e2fe7

SHA1
fce396c8fa01876dd008f22c8be9a9b706f4aaec

SHA256
f688364bb17f03e53de641e7a0b0efefe30ac155fa9fa414a2150204ed9d3734

SHA512
3a8f88fa83e9f8be96fc9a0e8b47536455f50b1c511210d98fa178444b1e5ad1943cc3000e869f6dba4c782b48a3538d0b52d5e29ce3a692636aefc0e52083ae

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-H1TL6.tmp\file.tmp

Filesize
695KB

MD5
415533bb40980951c966665cff9e2fe7

SHA1
fce396c8fa01876dd008f22c8be9a9b706f4aaec

SHA256
f688364bb17f03e53de641e7a0b0efefe30ac155fa9fa414a2150204ed9d3734

SHA512
3a8f88fa83e9f8be96fc9a0e8b47536455f50b1c511210d98fa178444b1e5ad1943cc3000e869f6dba4c782b48a3538d0b52d5e29ce3a692636aefc0e52083ae

Download Submit
C:\Users\Admin\AppData\Roaming\{d6dc608d-2a27-11ed-a0e3-806e6f6e6963}\BFH2uo3S0uG.exe

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
C:\Users\Admin\AppData\Roaming\{d6dc608d-2a27-11ed-a0e3-806e6f6e6963}\BFH2uo3S0uG.exe

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
memory/3084-151-0x0000000000400000-0x00000000013F3000-memory.dmp

Filesize
15.9MB

Download
memory/3084-143-0x0000000000400000-0x00000000013F3000-memory.dmp

Filesize
15.9MB

Download
memory/3084-142-0x0000000000400000-0x00000000013F3000-memory.dmp

Filesize
15.9MB

Download
memory/3084-147-0x0000000010000000-0x000000001001B000-memory.dmp

Filesize
108KB

Download
memory/3084-154-0x0000000000400000-0x00000000013F3000-memory.dmp

Filesize
15.9MB

Download
memory/4844-138-0x0000000000400000-0x000000000047D000-memory.dmp

Filesize
500KB

Download
memory/4844-132-0x0000000000400000-0x000000000047D000-memory.dmp

Filesize
500KB

Download
memory/4844-155-0x0000000000400000-0x000000000047D000-memory.dmp

Filesize
500KB

Download

Analysis

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