nymaim | 33363a25a1d5dd1390067bacdea908ef9ab906e9e91970e90e1d82446562e32c

General

Target

file.exe
Size

1.2MB
MD5

e28c126852fa8e1fb49b4a25afdca139
SHA1

faa978cf44979d4f203f65bc8f47ea090c0c2c06
SHA256

33363a25a1d5dd1390067bacdea908ef9ab906e9e91970e90e1d82446562e32c
SHA512

f7cfc4bdddc34de88f9f4efcdf0666d560f747bc6ccfbbca4ff76076c8779cda3f21615ae5c49e1eb135819aa08ba0046f86300e4ea5968b2c9d99c920d8d272
SSDEEP

24576:5izHOP9k0DH6CTZpAs6LQ34KliqS7Rr9K7+6z1Cs5z6xgZIY7eCLxYi3:yHOP9k0D712Q348aRrk7+ar6eNeVi3

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

Processes:

is-4942J.tmpPrintFolders.exeAg4VMKpiB.exe

pid process

1556 is-4942J.tmp
4540 PrintFolders.exe
3916 Ag4VMKpiB.exe

pid	process
1556	is-4942J.tmp
4540	PrintFolders.exe
3916	Ag4VMKpiB.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

Processes:

PrintFolders.exe

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

Loads dropped DLL 1 IoCs

Processes:

is-4942J.tmp

pid process

1556 is-4942J.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

pid	process
1556	is-4942J.tmp

Drops file in Program Files directory 9 IoCs

Processes:

is-4942J.tmp

description	ioc	process
File opened for modification	C:\Program Files (x86)\PrintFolders\unins000.dat	is-4942J.tmp
File opened for modification	C:\Program Files (x86)\PrintFolders\PrintFolders.exe	is-4942J.tmp
File created	C:\Program Files (x86)\PrintFolders\is-BHU83.tmp	is-4942J.tmp
File created	C:\Program Files (x86)\PrintFolders\is-D1D30.tmp	is-4942J.tmp
File created	C:\Program Files (x86)\PrintFolders\is-361NF.tmp	is-4942J.tmp
File created	C:\Program Files (x86)\PrintFolders\is-P6VEB.tmp	is-4942J.tmp
File created	C:\Program Files (x86)\PrintFolders\is-ABADV.tmp	is-4942J.tmp
File created	C:\Program Files (x86)\PrintFolders\is-9H2DA.tmp	is-4942J.tmp
File created	C:\Program Files (x86)\PrintFolders\unins000.dat	is-4942J.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

Processes:

taskkill.exe

pid process

4648 taskkill.exe
Suspicious behavior: EnumeratesProcesses 6 IoCs

Processes:

PrintFolders.exe

pid process

4540 PrintFolders.exe
4540 PrintFolders.exe
4540 PrintFolders.exe
4540 PrintFolders.exe
4540 PrintFolders.exe
4540 PrintFolders.exe
Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

PrintFolders.exe

pid process

4540 PrintFolders.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

taskkill.exe

description pid process

Token: SeDebugPrivilege 4648 taskkill.exe

pid	process
4648	taskkill.exe

pid	process
4540	PrintFolders.exe
4540	PrintFolders.exe
4540	PrintFolders.exe
4540	PrintFolders.exe
4540	PrintFolders.exe
4540	PrintFolders.exe

pid	process
4540	PrintFolders.exe

description	pid	process
Token: SeDebugPrivilege	4648	taskkill.exe

Suspicious use of WriteProcessMemory 15 IoCs

Processes:

file.exeis-4942J.tmpPrintFolders.execmd.exe

description	pid	process	target process
PID 2548 wrote to memory of 1556	2548	file.exe	is-4942J.tmp
PID 2548 wrote to memory of 1556	2548	file.exe	is-4942J.tmp
PID 2548 wrote to memory of 1556	2548	file.exe	is-4942J.tmp
PID 1556 wrote to memory of 4540	1556	is-4942J.tmp	PrintFolders.exe
PID 1556 wrote to memory of 4540	1556	is-4942J.tmp	PrintFolders.exe
PID 1556 wrote to memory of 4540	1556	is-4942J.tmp	PrintFolders.exe
PID 4540 wrote to memory of 3916	4540	PrintFolders.exe	Ag4VMKpiB.exe
PID 4540 wrote to memory of 3916	4540	PrintFolders.exe	Ag4VMKpiB.exe
PID 4540 wrote to memory of 3916	4540	PrintFolders.exe	Ag4VMKpiB.exe
PID 4540 wrote to memory of 4632	4540	PrintFolders.exe	cmd.exe
PID 4540 wrote to memory of 4632	4540	PrintFolders.exe	cmd.exe
PID 4540 wrote to memory of 4632	4540	PrintFolders.exe	cmd.exe
PID 4632 wrote to memory of 4648	4632	cmd.exe	taskkill.exe
PID 4632 wrote to memory of 4648	4632	cmd.exe	taskkill.exe
PID 4632 wrote to memory of 4648	4632	cmd.exe	taskkill.exe

C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:2548

C:\Users\Admin\AppData\Local\Temp\is-JHGIP.tmp\is-4942J.tmp
"C:\Users\Admin\AppData\Local\Temp\is-JHGIP.tmp\is-4942J.tmp" /SL4 $80032 "C:\Users\Admin\AppData\Local\Temp\file.exe" 1054280 51712
2⤵
- Executes dropped EXE
- Loads dropped DLL
- Drops file in Program Files directory
- Suspicious use of WriteProcessMemory
PID:1556

C:\Program Files (x86)\PrintFolders\PrintFolders.exe
"C:\Program Files (x86)\PrintFolders\PrintFolders.exe"
3⤵
- Executes dropped EXE
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of WriteProcessMemory
PID:4540

C:\Users\Admin\AppData\Roaming\{cd0d74c0-1ab4-11ed-b686-806e6f6e6963}\Ag4VMKpiB.exe
4⤵
- Executes dropped EXE
PID:3916

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c taskkill /im "PrintFolders.exe" /f & erase "C:\Program Files (x86)\PrintFolders\PrintFolders.exe" & exit
4⤵
- Suspicious use of WriteProcessMemory
PID:4632

C:\Windows\SysWOW64\taskkill.exe
taskkill /im "PrintFolders.exe" /f
5⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:4648

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

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Downloads

C:\Program Files (x86)\PrintFolders\PrintFolders.exe
Filesize
1.4MB

MD5
eac86bd943043425b7a0ad1cb3665493

SHA1
262bb29f03e2b73680a89caab6b5bde42894dec3

SHA256
b526d03b80fd4460d8e225557c89a4e84f1c9583b03524b7a71a9c57a2dee70a

SHA512
82999ec155855995808120e44afdced93f6ef3b44d1529a0dba6fa7a81519d5bc0238d0343d01a725705df6f13283b60a4d9f6515d376d56edd8dfd82f9da133

Download Submit
C:\Program Files (x86)\PrintFolders\PrintFolders.exe
Filesize
1.4MB

MD5
eac86bd943043425b7a0ad1cb3665493

SHA1
262bb29f03e2b73680a89caab6b5bde42894dec3

SHA256
b526d03b80fd4460d8e225557c89a4e84f1c9583b03524b7a71a9c57a2dee70a

SHA512
82999ec155855995808120e44afdced93f6ef3b44d1529a0dba6fa7a81519d5bc0238d0343d01a725705df6f13283b60a4d9f6515d376d56edd8dfd82f9da133

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-7S9FV.tmp\_iscrypt.dll
Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-JHGIP.tmp\is-4942J.tmp
Filesize
643KB

MD5
85b94e72c3f2d2b5464e2aaf3c9e242a

SHA1
ce7ccae5f50a990d059d59292d4a332979e162ba

SHA256
1441464feeef365573af18802c464769b7d3107624fde24604f57e386f97f1a7

SHA512
c0c27189989db482be9bda5b6b8b1441bdc5e9b0f3a414ccab4c4be516e7f99e25717845361a5b196114502faaaf21bec7aca91b497acd2e2396f49c31850880

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-JHGIP.tmp\is-4942J.tmp
Filesize
643KB

MD5
85b94e72c3f2d2b5464e2aaf3c9e242a

SHA1
ce7ccae5f50a990d059d59292d4a332979e162ba

SHA256
1441464feeef365573af18802c464769b7d3107624fde24604f57e386f97f1a7

SHA512
c0c27189989db482be9bda5b6b8b1441bdc5e9b0f3a414ccab4c4be516e7f99e25717845361a5b196114502faaaf21bec7aca91b497acd2e2396f49c31850880

Download Submit
C:\Users\Admin\AppData\Roaming\{cd0d74c0-1ab4-11ed-b686-806e6f6e6963}\Ag4VMKpiB.exe
Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
C:\Users\Admin\AppData\Roaming\{cd0d74c0-1ab4-11ed-b686-806e6f6e6963}\Ag4VMKpiB.exe
Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
memory/1556-134-0x0000000000000000-mapping.dmp

Download
memory/2548-137-0x0000000000400000-0x0000000000413000-memory.dmp

Filesize
76KB

Download
memory/2548-156-0x0000000000400000-0x0000000000413000-memory.dmp

Filesize
76KB

Download
memory/2548-132-0x0000000000400000-0x0000000000413000-memory.dmp

Filesize
76KB

Download
memory/3916-145-0x0000000000000000-mapping.dmp

Download
memory/4540-143-0x0000000000400000-0x0000000001372000-memory.dmp

Filesize
15.4MB

Download
memory/4540-144-0x0000000000400000-0x0000000001372000-memory.dmp

Filesize
15.4MB

Download
memory/4540-142-0x0000000000400000-0x0000000001372000-memory.dmp

Filesize
15.4MB

Download
memory/4540-148-0x0000000000400000-0x0000000001372000-memory.dmp

Filesize
15.4MB

Download
memory/4540-149-0x0000000010000000-0x000000001001B000-memory.dmp

Filesize
108KB

Download
memory/4540-155-0x0000000000400000-0x0000000001372000-memory.dmp

Filesize
15.4MB

Download
memory/4540-139-0x0000000000000000-mapping.dmp

Download
memory/4632-153-0x0000000000000000-mapping.dmp

Download
memory/4648-154-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads